./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:50:45,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:50:45,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:50:45,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:50:45,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:50:45,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:50:45,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:50:45,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:50:45,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:50:45,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:50:45,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:50:45,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:50:45,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:50:45,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:50:45,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:50:45,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:50:45,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:50:45,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:50:45,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:50:45,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:50:45,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:50:45,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:50:45,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:50:45,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:50:45,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:50:45,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:50:45,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:50:45,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:50:45,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:50:45,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:50:45,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:50:45,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:50:45,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:50:45,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:50:45,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:50:45,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:50:45,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:50:45,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:50:45,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:50:45,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:50:45,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:50:45,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 20:50:45,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:50:45,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:50:45,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:50:45,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:50:45,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:50:45,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:50:45,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:50:45,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:50:45,118 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:50:45,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:50:45,119 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:50:45,119 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:50:45,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:50:45,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:50:45,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:50:45,119 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:50:45,119 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:50:45,120 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:50:45,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:50:45,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:50:45,120 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:50:45,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:50:45,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:50:45,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:50:45,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:50:45,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:50:45,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:50:45,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:50:45,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:50:45,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:50:45,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:50:45,122 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:50:45,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:50:45,122 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:50:45,122 INFO L138 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_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2022-12-13 20:50:45,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:50:45,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:50:45,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:50:45,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:50:45,353 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:50:45,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-memsafety/list1.i [2022-12-13 20:50:47,864 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:50:48,056 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:50:48,057 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/sv-benchmarks/c/pthread-memsafety/list1.i [2022-12-13 20:50:48,067 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data/f99f681f4/c47fee4ccb3e4bbd95554ae96854ef41/FLAG4374450bd [2022-12-13 20:50:48,434 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data/f99f681f4/c47fee4ccb3e4bbd95554ae96854ef41 [2022-12-13 20:50:48,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:50:48,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:50:48,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:50:48,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:50:48,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:50:48,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:50:48" (1/1) ... [2022-12-13 20:50:48,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd9c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:48, skipping insertion in model container [2022-12-13 20:50:48,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:50:48" (1/1) ... [2022-12-13 20:50:48,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:50:48,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:50:48,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:50:48,758 ERROR L326 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) [2022-12-13 20:50:48,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24bbda88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:48, skipping insertion in model container [2022-12-13 20:50:48,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:50:48,758 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 20:50:48,760 INFO L158 Benchmark]: Toolchain (without parser) took 321.99ms. Allocated memory is still 123.7MB. Free memory was 87.7MB in the beginning and 74.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:50:48,760 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:50:48,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.56ms. Allocated memory is still 123.7MB. Free memory was 87.7MB in the beginning and 74.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:50:48,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.56ms. Allocated memory is still 123.7MB. Free memory was 87.7MB in the beginning and 74.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1048]: 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_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:50:50,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:50:50,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:50:50,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:50:50,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:50:50,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:50:50,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:50:50,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:50:50,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:50:50,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:50:50,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:50:50,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:50:50,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:50:50,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:50:50,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:50:50,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:50:50,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:50:50,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:50:50,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:50:50,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:50:50,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:50:50,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:50:50,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:50:50,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:50:50,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:50:50,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:50:50,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:50:50,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:50:50,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:50:50,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:50:50,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:50:50,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:50:50,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:50:50,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:50:50,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:50:50,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:50:50,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:50:50,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:50:50,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:50:50,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:50:50,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:50:50,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 20:50:50,195 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:50:50,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:50:50,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:50:50,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:50:50,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:50:50,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:50:50,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:50:50,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:50:50,197 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:50:50,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:50:50,198 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:50:50,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:50:50,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:50:50,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:50:50,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:50:50,198 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:50:50,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:50:50,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:50:50,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:50:50,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:50:50,199 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 20:50:50,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 20:50:50,200 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:50:50,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:50:50,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:50:50,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:50:50,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:50:50,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:50:50,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:50:50,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:50:50,201 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 20:50:50,201 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 20:50:50,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:50:50,201 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:50:50,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:50:50,202 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 20:50:50,202 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:50:50,202 INFO L138 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_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2022-12-13 20:50:50,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:50:50,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:50:50,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:50:50,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:50:50,472 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:50:50,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-memsafety/list1.i [2022-12-13 20:50:53,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:50:53,347 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:50:53,348 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/sv-benchmarks/c/pthread-memsafety/list1.i [2022-12-13 20:50:53,360 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data/dc3c18f56/e0782d33a17d44e1acee019e48552ccc/FLAGacce0d658 [2022-12-13 20:50:53,374 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/data/dc3c18f56/e0782d33a17d44e1acee019e48552ccc [2022-12-13 20:50:53,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:50:53,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:50:53,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:50:53,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:50:53,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:50:53,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:53,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447d9f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53, skipping insertion in model container [2022-12-13 20:50:53,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:53,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:50:53,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:50:53,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:50:53,832 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 20:50:53,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:50:53,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:50:53,877 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:50:53,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:50:53,987 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:50:53,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53 WrapperNode [2022-12-13 20:50:53,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:50:53,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:50:53,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:50:53,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:50:53,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,022 INFO L138 Inliner]: procedures = 267, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2022-12-13 20:50:54,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:50:54,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:50:54,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:50:54,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:50:54,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,044 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:50:54,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:50:54,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:50:54,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:50:54,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (1/1) ... [2022-12-13 20:50:54,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:50:54,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:50:54,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:50:54,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:50:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 20:50:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:50:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 20:50:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 20:50:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:50:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 20:50:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:50:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 20:50:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2022-12-13 20:50:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2022-12-13 20:50:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure build [2022-12-13 20:50:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2022-12-13 20:50:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:50:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:50:54,110 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:50:54,229 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:50:54,231 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:50:54,600 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:50:54,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:50:54,608 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:50:54,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:50:54 BoogieIcfgContainer [2022-12-13 20:50:54,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:50:54,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:50:54,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:50:54,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:50:54,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:50:53" (1/3) ... [2022-12-13 20:50:54,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d4b7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:50:54, skipping insertion in model container [2022-12-13 20:50:54,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:50:53" (2/3) ... [2022-12-13 20:50:54,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d4b7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:50:54, skipping insertion in model container [2022-12-13 20:50:54,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:50:54" (3/3) ... [2022-12-13 20:50:54,626 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2022-12-13 20:50:54,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:50:54,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-12-13 20:50:54,645 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:50:54,730 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:50:54,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 151 transitions, 318 flow [2022-12-13 20:50:54,791 INFO L130 PetriNetUnfolder]: 6/149 cut-off events. [2022-12-13 20:50:54,791 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:50:54,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 6/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 373 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2022-12-13 20:50:54,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 151 transitions, 318 flow [2022-12-13 20:50:54,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 144 transitions, 300 flow [2022-12-13 20:50:54,801 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:50:54,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 144 transitions, 300 flow [2022-12-13 20:50:54,810 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 144 transitions, 300 flow [2022-12-13 20:50:54,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 144 transitions, 300 flow [2022-12-13 20:50:54,835 INFO L130 PetriNetUnfolder]: 6/144 cut-off events. [2022-12-13 20:50:54,835 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:50:54,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 6/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 374 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2022-12-13 20:50:54,837 INFO L119 LiptonReduction]: Number of co-enabled transitions 960 [2022-12-13 20:51:19,231 INFO L134 LiptonReduction]: Checked pairs total: 1645 [2022-12-13 20:51:19,231 INFO L136 LiptonReduction]: Total number of compositions: 182 [2022-12-13 20:51:19,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:51:19,246 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;@38f72569, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:51:19,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2022-12-13 20:51:19,247 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:51:19,247 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:51:19,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:19,248 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:51:19,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash 637, now seen corresponding path program 1 times [2022-12-13 20:51:19,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513895230] [2022-12-13 20:51:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:19,260 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 [2022-12-13 20:51:19,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:19,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:19,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:19,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 20:51:19,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:19,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:19,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:19,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513895230] [2022-12-13 20:51:19,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513895230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:19,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:19,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:51:19,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002970290] [2022-12-13 20:51:19,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:51:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:51:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:51:19,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2022-12-13 20:51:19,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:19,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:19,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2022-12-13 20:51:19,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:19,572 INFO L130 PetriNetUnfolder]: 100/235 cut-off events. [2022-12-13 20:51:19,572 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:51:19,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 235 events. 100/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 968 event pairs, 84 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 261. Up to 228 conditions per place. [2022-12-13 20:51:19,575 INFO L137 encePairwiseOnDemand]: 322/333 looper letters, 47 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2022-12-13 20:51:19,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 204 flow [2022-12-13 20:51:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:51:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:51:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 348 transitions. [2022-12-13 20:51:19,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2022-12-13 20:51:19,589 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 348 transitions. [2022-12-13 20:51:19,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 348 transitions. [2022-12-13 20:51:19,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:19,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 348 transitions. [2022-12-13 20:51:19,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.0) internal successors, (348), 2 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:19,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:19,600 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:19,602 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 132 flow. Second operand 2 states and 348 transitions. [2022-12-13 20:51:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 204 flow [2022-12-13 20:51:19,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 20:51:19,607 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 102 flow [2022-12-13 20:51:19,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2022-12-13 20:51:19,612 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2022-12-13 20:51:19,613 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 102 flow [2022-12-13 20:51:19,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:19,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:19,613 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:51:19,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:19,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:19,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:19,817 INFO L85 PathProgramCache]: Analyzing trace with hash 627788, now seen corresponding path program 1 times [2022-12-13 20:51:19,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:19,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362756296] [2022-12-13 20:51:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:19,819 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 [2022-12-13 20:51:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:19,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:19,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:20,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:51:20,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:20,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:20,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:20,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362756296] [2022-12-13 20:51:20,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362756296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:20,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:20,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:20,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025690432] [2022-12-13 20:51:20,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:20,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:20,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:20,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:20,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:20,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 333 [2022-12-13 20:51:20,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:20,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:20,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 333 [2022-12-13 20:51:20,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:20,825 INFO L130 PetriNetUnfolder]: 157/376 cut-off events. [2022-12-13 20:51:20,825 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:51:20,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 376 events. 157/376 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 1954 event pairs, 107 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 747. Up to 215 conditions per place. [2022-12-13 20:51:20,827 INFO L137 encePairwiseOnDemand]: 324/333 looper letters, 82 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2022-12-13 20:51:20,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 371 flow [2022-12-13 20:51:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2022-12-13 20:51:20,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4934934934934935 [2022-12-13 20:51:20,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2022-12-13 20:51:20,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2022-12-13 20:51:20,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:20,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2022-12-13 20:51:20,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:20,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:20,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:20,834 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 102 flow. Second operand 3 states and 493 transitions. [2022-12-13 20:51:20,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 371 flow [2022-12-13 20:51:20,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:51:20,835 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 160 flow [2022-12-13 20:51:20,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2022-12-13 20:51:20,836 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2022-12-13 20:51:20,836 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 160 flow [2022-12-13 20:51:20,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:20,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:20,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:51:20,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 20:51:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:21,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash 627787, now seen corresponding path program 1 times [2022-12-13 20:51:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:21,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914601798] [2022-12-13 20:51:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:21,038 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 [2022-12-13 20:51:21,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:21,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:21,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:21,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:51:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:21,156 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 20:51:21,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 20:51:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:21,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:21,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:21,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914601798] [2022-12-13 20:51:21,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914601798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:21,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:21,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228436895] [2022-12-13 20:51:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:21,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:21,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 333 [2022-12-13 20:51:21,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:21,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 333 [2022-12-13 20:51:21,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:21,568 INFO L130 PetriNetUnfolder]: 181/437 cut-off events. [2022-12-13 20:51:21,568 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 20:51:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 437 events. 181/437 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 2388 event pairs, 91 based on Foata normal form. 13/158 useless extension candidates. Maximal degree in co-relation 938. Up to 267 conditions per place. [2022-12-13 20:51:21,571 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 56 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2022-12-13 20:51:21,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 317 flow [2022-12-13 20:51:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2022-12-13 20:51:21,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4574574574574575 [2022-12-13 20:51:21,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2022-12-13 20:51:21,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2022-12-13 20:51:21,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:21,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2022-12-13 20:51:21,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,579 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 160 flow. Second operand 3 states and 457 transitions. [2022-12-13 20:51:21,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 317 flow [2022-12-13 20:51:21,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:21,581 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 182 flow [2022-12-13 20:51:21,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2022-12-13 20:51:21,582 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2022-12-13 20:51:21,582 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 182 flow [2022-12-13 20:51:21,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:21,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:51:21,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 20:51:21,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:21,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 603289611, now seen corresponding path program 1 times [2022-12-13 20:51:21,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:21,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108207479] [2022-12-13 20:51:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:21,785 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 [2022-12-13 20:51:21,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:21,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:21,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:21,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:51:21,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:21,869 INFO L350 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 [2022-12-13 20:51:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:21,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:21,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:21,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108207479] [2022-12-13 20:51:21,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108207479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:21,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:21,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:51:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34623021] [2022-12-13 20:51:21,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:21,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:22,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 333 [2022-12-13 20:51:22,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:22,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 333 [2022-12-13 20:51:22,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:22,292 INFO L130 PetriNetUnfolder]: 179/431 cut-off events. [2022-12-13 20:51:22,292 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 20:51:22,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 431 events. 179/431 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2350 event pairs, 90 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 994. Up to 258 conditions per place. [2022-12-13 20:51:22,294 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 54 selfloop transitions, 8 changer transitions 0/64 dead transitions. [2022-12-13 20:51:22,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 317 flow [2022-12-13 20:51:22,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-12-13 20:51:22,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4754754754754755 [2022-12-13 20:51:22,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-12-13 20:51:22,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-12-13 20:51:22,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:22,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-12-13 20:51:22,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,298 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 182 flow. Second operand 3 states and 475 transitions. [2022-12-13 20:51:22,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 317 flow [2022-12-13 20:51:22,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:51:22,300 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 182 flow [2022-12-13 20:51:22,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2022-12-13 20:51:22,300 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2022-12-13 20:51:22,300 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 182 flow [2022-12-13 20:51:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:22,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:51:22,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 20:51:22,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:22,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:22,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash 603289610, now seen corresponding path program 1 times [2022-12-13 20:51:22,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:22,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516301781] [2022-12-13 20:51:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:22,506 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 [2022-12-13 20:51:22,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:22,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:22,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:22,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:51:22,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:22,646 INFO L350 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 [2022-12-13 20:51:22,650 INFO L350 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 [2022-12-13 20:51:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:22,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:22,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:22,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516301781] [2022-12-13 20:51:22,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516301781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:22,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:22,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:51:22,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502651317] [2022-12-13 20:51:22,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:22,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:22,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 333 [2022-12-13 20:51:22,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:22,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 333 [2022-12-13 20:51:22,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:23,084 INFO L130 PetriNetUnfolder]: 177/425 cut-off events. [2022-12-13 20:51:23,084 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-12-13 20:51:23,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 425 events. 177/425 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2319 event pairs, 95 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 978. Up to 266 conditions per place. [2022-12-13 20:51:23,087 INFO L137 encePairwiseOnDemand]: 326/333 looper letters, 53 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2022-12-13 20:51:23,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 313 flow [2022-12-13 20:51:23,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2022-12-13 20:51:23,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2022-12-13 20:51:23,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2022-12-13 20:51:23,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2022-12-13 20:51:23,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:23,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2022-12-13 20:51:23,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:23,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:23,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:23,091 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 182 flow. Second operand 3 states and 474 transitions. [2022-12-13 20:51:23,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 313 flow [2022-12-13 20:51:23,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:23,093 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 172 flow [2022-12-13 20:51:23,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2022-12-13 20:51:23,093 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2022-12-13 20:51:23,093 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 172 flow [2022-12-13 20:51:23,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:23,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:23,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:51:23,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:23,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:23,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 19460939, now seen corresponding path program 1 times [2022-12-13 20:51:23,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:23,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579385922] [2022-12-13 20:51:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:23,296 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 [2022-12-13 20:51:23,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:23,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:23,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:23,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:51:23,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:23,447 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 20:51:23,448 INFO L350 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 19 treesize of output 22 [2022-12-13 20:51:23,461 INFO L350 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 9 treesize of output 11 [2022-12-13 20:51:23,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:51:23,521 INFO L350 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 19 treesize of output 19 [2022-12-13 20:51:23,541 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:51:23,541 INFO L350 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 [2022-12-13 20:51:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:23,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:23,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:23,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579385922] [2022-12-13 20:51:23,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579385922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:23,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:23,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:51:23,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629785353] [2022-12-13 20:51:23,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:23,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:51:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:51:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:51:24,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 333 [2022-12-13 20:51:24,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:24,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:24,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 333 [2022-12-13 20:51:24,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:24,278 INFO L130 PetriNetUnfolder]: 166/402 cut-off events. [2022-12-13 20:51:24,278 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-12-13 20:51:24,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 402 events. 166/402 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2261 event pairs, 86 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 915. Up to 248 conditions per place. [2022-12-13 20:51:24,280 INFO L137 encePairwiseOnDemand]: 326/333 looper letters, 50 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2022-12-13 20:51:24,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 305 flow [2022-12-13 20:51:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:51:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:51:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 571 transitions. [2022-12-13 20:51:24,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4286786786786787 [2022-12-13 20:51:24,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 571 transitions. [2022-12-13 20:51:24,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 571 transitions. [2022-12-13 20:51:24,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:24,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 571 transitions. [2022-12-13 20:51:24,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:24,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:24,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:24,285 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 172 flow. Second operand 4 states and 571 transitions. [2022-12-13 20:51:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 305 flow [2022-12-13 20:51:24,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:24,287 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 172 flow [2022-12-13 20:51:24,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2022-12-13 20:51:24,287 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2022-12-13 20:51:24,287 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 172 flow [2022-12-13 20:51:24,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:24,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:24,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:51:24,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 20:51:24,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:24,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash 603291194, now seen corresponding path program 1 times [2022-12-13 20:51:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:24,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101181938] [2022-12-13 20:51:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:24,489 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 [2022-12-13 20:51:24,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:24,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:24,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:24,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 20:51:24,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:24,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:24,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101181938] [2022-12-13 20:51:24,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101181938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:24,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:24,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:51:24,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846579790] [2022-12-13 20:51:24,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:24,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:51:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:51:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:51:24,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 333 [2022-12-13 20:51:24,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:24,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:24,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 333 [2022-12-13 20:51:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:25,425 INFO L130 PetriNetUnfolder]: 179/444 cut-off events. [2022-12-13 20:51:25,426 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-13 20:51:25,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 444 events. 179/444 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 2463 event pairs, 138 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 1005. Up to 392 conditions per place. [2022-12-13 20:51:25,427 INFO L137 encePairwiseOnDemand]: 322/333 looper letters, 54 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2022-12-13 20:51:25,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 342 flow [2022-12-13 20:51:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:51:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:51:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1003 transitions. [2022-12-13 20:51:25,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4302874302874303 [2022-12-13 20:51:25,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1003 transitions. [2022-12-13 20:51:25,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1003 transitions. [2022-12-13 20:51:25,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:25,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1003 transitions. [2022-12-13 20:51:25,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,437 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 172 flow. Second operand 7 states and 1003 transitions. [2022-12-13 20:51:25,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 342 flow [2022-12-13 20:51:25,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:25,438 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 229 flow [2022-12-13 20:51:25,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2022-12-13 20:51:25,439 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2022-12-13 20:51:25,439 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 229 flow [2022-12-13 20:51:25,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:25,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:25,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:25,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:25,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash -57764152, now seen corresponding path program 1 times [2022-12-13 20:51:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:25,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342061913] [2022-12-13 20:51:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:25,641 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 [2022-12-13 20:51:25,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:25,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:25,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:51:25,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:25,780 INFO L350 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 [2022-12-13 20:51:25,785 INFO L350 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 [2022-12-13 20:51:25,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:51:25,815 INFO L350 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 12 treesize of output 14 [2022-12-13 20:51:25,827 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:51:25,828 INFO L350 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 [2022-12-13 20:51:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:25,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:25,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:25,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342061913] [2022-12-13 20:51:25,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342061913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:25,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:25,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:51:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535451503] [2022-12-13 20:51:25,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:51:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:51:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:51:26,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2022-12-13 20:51:26,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:26,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2022-12-13 20:51:26,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:26,281 INFO L130 PetriNetUnfolder]: 179/430 cut-off events. [2022-12-13 20:51:26,281 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-12-13 20:51:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 430 events. 179/430 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 2318 event pairs, 84 based on Foata normal form. 9/189 useless extension candidates. Maximal degree in co-relation 1055. Up to 262 conditions per place. [2022-12-13 20:51:26,284 INFO L137 encePairwiseOnDemand]: 324/333 looper letters, 58 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2022-12-13 20:51:26,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 382 flow [2022-12-13 20:51:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:51:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:51:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2022-12-13 20:51:26,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41291291291291293 [2022-12-13 20:51:26,286 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2022-12-13 20:51:26,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2022-12-13 20:51:26,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:26,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2022-12-13 20:51:26,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,288 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,288 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 229 flow. Second operand 4 states and 550 transitions. [2022-12-13 20:51:26,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 382 flow [2022-12-13 20:51:26,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:26,289 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 240 flow [2022-12-13 20:51:26,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2022-12-13 20:51:26,290 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2022-12-13 20:51:26,290 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 240 flow [2022-12-13 20:51:26,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:26,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:26,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 20:51:26,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:26,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:26,493 INFO L85 PathProgramCache]: Analyzing trace with hash -57763943, now seen corresponding path program 1 times [2022-12-13 20:51:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:26,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347289890] [2022-12-13 20:51:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:26,494 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 [2022-12-13 20:51:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:26,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:26,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:26,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 20:51:26,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:26,628 INFO L350 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 [2022-12-13 20:51:26,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:51:26,664 INFO L350 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 16 [2022-12-13 20:51:26,672 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:51:26,672 INFO L350 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 [2022-12-13 20:51:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:26,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:26,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:26,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347289890] [2022-12-13 20:51:26,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347289890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:26,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:26,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:51:26,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253582083] [2022-12-13 20:51:26,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:26,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:51:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:26,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:51:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:51:27,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 333 [2022-12-13 20:51:27,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:27,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 333 [2022-12-13 20:51:27,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:27,463 INFO L130 PetriNetUnfolder]: 169/408 cut-off events. [2022-12-13 20:51:27,463 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-13 20:51:27,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 408 events. 169/408 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2229 event pairs, 75 based on Foata normal form. 9/176 useless extension candidates. Maximal degree in co-relation 1027. Up to 232 conditions per place. [2022-12-13 20:51:27,466 INFO L137 encePairwiseOnDemand]: 319/333 looper letters, 47 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2022-12-13 20:51:27,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 377 flow [2022-12-13 20:51:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:51:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:51:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 844 transitions. [2022-12-13 20:51:27,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42242242242242245 [2022-12-13 20:51:27,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 844 transitions. [2022-12-13 20:51:27,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 844 transitions. [2022-12-13 20:51:27,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:27,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 844 transitions. [2022-12-13 20:51:27,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,471 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,471 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 240 flow. Second operand 6 states and 844 transitions. [2022-12-13 20:51:27,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 377 flow [2022-12-13 20:51:27,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:27,473 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 246 flow [2022-12-13 20:51:27,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2022-12-13 20:51:27,473 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2022-12-13 20:51:27,473 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 246 flow [2022-12-13 20:51:27,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:27,474 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:27,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:27,674 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:27,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:27,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1435990122, now seen corresponding path program 1 times [2022-12-13 20:51:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:27,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021611924] [2022-12-13 20:51:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:27,675 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 [2022-12-13 20:51:27,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:27,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:27,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:27,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 20:51:27,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:27,842 INFO L350 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 [2022-12-13 20:51:27,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 20:51:27,889 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 20:51:27,889 INFO L350 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 18 treesize of output 24 [2022-12-13 20:51:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:27,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:51:27,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-12-13 20:51:28,057 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-13 20:51:28,058 INFO L350 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 46 treesize of output 45 [2022-12-13 20:51:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:28,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:51:28,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021611924] [2022-12-13 20:51:28,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021611924] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:51:28,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:51:28,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2022-12-13 20:51:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135725673] [2022-12-13 20:51:28,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:51:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:51:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:51:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:51:28,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:51:30,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:51:30,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 333 [2022-12-13 20:51:30,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 107.66666666666667) internal successors, (969), 9 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:30,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:30,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 333 [2022-12-13 20:51:30,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:31,282 INFO L130 PetriNetUnfolder]: 168/404 cut-off events. [2022-12-13 20:51:31,282 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-12-13 20:51:31,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 404 events. 168/404 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 2178 event pairs, 77 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 1075. Up to 202 conditions per place. [2022-12-13 20:51:31,283 INFO L137 encePairwiseOnDemand]: 321/333 looper letters, 51 selfloop transitions, 14 changer transitions 0/65 dead transitions. [2022-12-13 20:51:31,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 405 flow [2022-12-13 20:51:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:51:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:51:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 588 transitions. [2022-12-13 20:51:31,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35315315315315315 [2022-12-13 20:51:31,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 588 transitions. [2022-12-13 20:51:31,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 588 transitions. [2022-12-13 20:51:31,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:31,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 588 transitions. [2022-12-13 20:51:31,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:31,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:31,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:31,288 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 246 flow. Second operand 5 states and 588 transitions. [2022-12-13 20:51:31,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 405 flow [2022-12-13 20:51:31,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 377 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 20:51:31,289 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 240 flow [2022-12-13 20:51:31,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2022-12-13 20:51:31,290 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2022-12-13 20:51:31,290 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 240 flow [2022-12-13 20:51:31,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.66666666666667) internal successors, (969), 9 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:31,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:31,290 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:31,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 20:51:31,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:51:31,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:51:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1435990123, now seen corresponding path program 1 times [2022-12-13 20:51:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:51:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020171408] [2022-12-13 20:51:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:31,495 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 [2022-12-13 20:51:31,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:51:31,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:51:31,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 20:51:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:31,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 20:51:31,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:31,665 INFO L350 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 [2022-12-13 20:51:31,672 INFO L350 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 [2022-12-13 20:51:31,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:51:31,715 INFO L350 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 12 treesize of output 14 [2022-12-13 20:51:31,723 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:51:31,723 INFO L350 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 [2022-12-13 20:51:31,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 20:51:31,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 20:51:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:51:31,814 INFO L350 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 18 [2022-12-13 20:51:31,828 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-12-13 20:51:31,828 INFO L350 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 17 treesize of output 17 [2022-12-13 20:51:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:31,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:51:34,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-12-13 20:51:34,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-12-13 20:51:34,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-12-13 20:51:52,906 WARN L233 SmtUtils]: Spent 18.26s on a formula simplification. DAG size of input: 59 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:51:53,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:51:53,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 181 [2022-12-13 20:52:12,977 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:52:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:52:13,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:52:13,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020171408] [2022-12-13 20:52:13,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020171408] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:52:13,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:52:13,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 20:52:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903137104] [2022-12-13 20:52:13,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:52:13,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:52:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:52:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:52:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=97, Unknown=3, NotChecked=0, Total=132 [2022-12-13 20:52:15,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:17,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:19,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:21,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:23,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:25,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:28,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:30,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:32,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:35,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:37,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:39,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:41,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:44,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:46,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:49,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:51,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:53,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:56,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:52:58,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:53:00,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:53:02,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:53:05,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:53:07,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:53:09,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:53:11,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 20:53:11,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 333 [2022-12-13 20:53:11,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 240 flow. Second operand has 12 states, 12 states have (on average 78.5) internal successors, (942), 12 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:11,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:53:11,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 333 [2022-12-13 20:53:11,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:53:12,839 INFO L130 PetriNetUnfolder]: 171/407 cut-off events. [2022-12-13 20:53:12,839 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-12-13 20:53:12,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 407 events. 171/407 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2186 event pairs, 77 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 1123. Up to 196 conditions per place. [2022-12-13 20:53:12,840 INFO L137 encePairwiseOnDemand]: 321/333 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2022-12-13 20:53:12,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 410 flow [2022-12-13 20:53:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:53:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:53:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 522 transitions. [2022-12-13 20:53:12,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.26126126126126126 [2022-12-13 20:53:12,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 522 transitions. [2022-12-13 20:53:12,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 522 transitions. [2022-12-13 20:53:12,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:53:12,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 522 transitions. [2022-12-13 20:53:12,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:12,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:12,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:12,845 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 240 flow. Second operand 6 states and 522 transitions. [2022-12-13 20:53:12,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 410 flow [2022-12-13 20:53:12,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:53:12,847 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 283 flow [2022-12-13 20:53:12,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2022-12-13 20:53:12,847 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2022-12-13 20:53:12,847 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 283 flow [2022-12-13 20:53:12,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.5) internal successors, (942), 12 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:12,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:53:12,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:12,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 20:53:13,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:13,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:53:13,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:53:13,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1079523238, now seen corresponding path program 1 times [2022-12-13 20:53:13,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:53:13,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504838960] [2022-12-13 20:53:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:53:13,050 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 [2022-12-13 20:53:13,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:53:13,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:53:13,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 20:53:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:53:13,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:53:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:53:13,225 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 20:53:13,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-13 20:53:13,245 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 20:53:13,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 20:53:13,282 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:53:13,282 INFO L350 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 [2022-12-13 20:53:13,289 INFO L350 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 12 treesize of output 14 [2022-12-13 20:53:13,319 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 20:53:13,319 INFO L350 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 [2022-12-13 20:53:13,323 INFO L350 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 [2022-12-13 20:53:13,431 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-12-13 20:53:13,431 INFO L350 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 3 case distinctions, treesize of input 39 treesize of output 50 [2022-12-13 20:53:13,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:53:13,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 56 [2022-12-13 20:53:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:53:13,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:53:13,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:53:13,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504838960] [2022-12-13 20:53:13,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504838960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:53:13,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:53:13,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:53:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824968500] [2022-12-13 20:53:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:53:13,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:53:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:53:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:53:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:53:16,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:53:19,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 20:53:19,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 333 [2022-12-13 20:53:19,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:19,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:53:19,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 333 [2022-12-13 20:53:19,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:53:20,186 INFO L130 PetriNetUnfolder]: 87/265 cut-off events. [2022-12-13 20:53:20,186 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-12-13 20:53:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 265 events. 87/265 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1398 event pairs, 43 based on Foata normal form. 2/159 useless extension candidates. Maximal degree in co-relation 816. Up to 127 conditions per place. [2022-12-13 20:53:20,187 INFO L137 encePairwiseOnDemand]: 317/333 looper letters, 52 selfloop transitions, 20 changer transitions 0/72 dead transitions. [2022-12-13 20:53:20,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 487 flow [2022-12-13 20:53:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:53:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 20:53:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1068 transitions. [2022-12-13 20:53:20,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4009009009009009 [2022-12-13 20:53:20,190 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1068 transitions. [2022-12-13 20:53:20,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1068 transitions. [2022-12-13 20:53:20,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:53:20,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1068 transitions. [2022-12-13 20:53:20,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.5) internal successors, (1068), 8 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,193 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,193 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 283 flow. Second operand 8 states and 1068 transitions. [2022-12-13 20:53:20,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 487 flow [2022-12-13 20:53:20,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 464 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 20:53:20,195 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 366 flow [2022-12-13 20:53:20,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2022-12-13 20:53:20,196 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2022-12-13 20:53:20,196 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 366 flow [2022-12-13 20:53:20,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:53:20,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:20,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 20:53:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:20,397 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting deleteErr8ASSERT_VIOLATIONMEMORY_FREE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:53:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:53:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1960268591, now seen corresponding path program 1 times [2022-12-13 20:53:20,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:53:20,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528303858] [2022-12-13 20:53:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:53:20,400 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 [2022-12-13 20:53:20,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:53:20,402 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:53:20,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 20:53:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:53:20,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:53:20,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:53:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:53:20,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:53:20,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:53:20,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528303858] [2022-12-13 20:53:20,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528303858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:53:20,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:53:20,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:53:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738650056] [2022-12-13 20:53:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:53:20,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:53:20,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:53:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:53:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:53:20,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 333 [2022-12-13 20:53:20,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:53:20,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 333 [2022-12-13 20:53:20,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:53:20,829 INFO L130 PetriNetUnfolder]: 77/235 cut-off events. [2022-12-13 20:53:20,829 INFO L131 PetriNetUnfolder]: For 284/284 co-relation queries the response was YES. [2022-12-13 20:53:20,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 235 events. 77/235 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1123 event pairs, 51 based on Foata normal form. 4/161 useless extension candidates. Maximal degree in co-relation 792. Up to 172 conditions per place. [2022-12-13 20:53:20,830 INFO L137 encePairwiseOnDemand]: 328/333 looper letters, 50 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-13 20:53:20,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 416 flow [2022-12-13 20:53:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:53:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:53:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 607 transitions. [2022-12-13 20:53:20,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45570570570570573 [2022-12-13 20:53:20,832 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 607 transitions. [2022-12-13 20:53:20,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 607 transitions. [2022-12-13 20:53:20,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:53:20,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 607 transitions. [2022-12-13 20:53:20,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,834 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 366 flow. Second operand 4 states and 607 transitions. [2022-12-13 20:53:20,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 416 flow [2022-12-13 20:53:20,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 392 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 20:53:20,836 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 292 flow [2022-12-13 20:53:20,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2022-12-13 20:53:20,836 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2022-12-13 20:53:20,836 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 292 flow [2022-12-13 20:53:20,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:20,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:53:20,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:20,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 20:53:21,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:21,038 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting deleteErr7ASSERT_VIOLATIONMEMORY_FREE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:53:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:53:21,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1960268588, now seen corresponding path program 1 times [2022-12-13 20:53:21,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:53:21,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397516977] [2022-12-13 20:53:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:53:21,040 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 [2022-12-13 20:53:21,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:53:21,043 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:53:21,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 20:53:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:53:21,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:53:21,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:53:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:53:21,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:53:21,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:53:21,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397516977] [2022-12-13 20:53:21,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397516977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:53:21,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:53:21,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:53:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395356553] [2022-12-13 20:53:21,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:53:21,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:53:21,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:53:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:53:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:53:21,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 333 [2022-12-13 20:53:21,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:21,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:53:21,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 333 [2022-12-13 20:53:21,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:53:21,377 INFO L130 PetriNetUnfolder]: 77/227 cut-off events. [2022-12-13 20:53:21,377 INFO L131 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2022-12-13 20:53:21,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 227 events. 77/227 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1045 event pairs, 51 based on Foata normal form. 4/153 useless extension candidates. Maximal degree in co-relation 718. Up to 164 conditions per place. [2022-12-13 20:53:21,378 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-12-13 20:53:21,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 380 flow [2022-12-13 20:53:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:53:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:53:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2022-12-13 20:53:21,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2022-12-13 20:53:21,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2022-12-13 20:53:21,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2022-12-13 20:53:21,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:53:21,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2022-12-13 20:53:21,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:21,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:21,382 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:21,382 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 292 flow. Second operand 4 states and 604 transitions. [2022-12-13 20:53:21,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 380 flow [2022-12-13 20:53:21,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:53:21,383 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 279 flow [2022-12-13 20:53:21,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2022-12-13 20:53:21,384 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2022-12-13 20:53:21,384 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 279 flow [2022-12-13 20:53:21,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:21,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:53:21,384 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:21,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 20:53:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:21,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting deleteErr4ASSERT_VIOLATIONMEMORY_FREE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:53:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:53:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1960268576, now seen corresponding path program 1 times [2022-12-13 20:53:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:53:21,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638619490] [2022-12-13 20:53:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:53:21,595 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 [2022-12-13 20:53:21,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:53:21,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:53:21,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 20:53:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:53:21,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 20:53:21,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:53:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:53:21,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:53:21,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:53:21,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638619490] [2022-12-13 20:53:21,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638619490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:53:21,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:53:21,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:53:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734751690] [2022-12-13 20:53:21,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:53:21,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:53:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:53:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:53:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:53:21,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 333 [2022-12-13 20:53:21,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:21,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:53:21,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 333 [2022-12-13 20:53:21,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:53:22,061 INFO L130 PetriNetUnfolder]: 65/191 cut-off events. [2022-12-13 20:53:22,062 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2022-12-13 20:53:22,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 191 events. 65/191 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 809 event pairs, 39 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 636. Up to 128 conditions per place. [2022-12-13 20:53:22,063 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 20:53:22,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 357 flow [2022-12-13 20:53:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:53:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:53:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 603 transitions. [2022-12-13 20:53:22,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2022-12-13 20:53:22,065 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 603 transitions. [2022-12-13 20:53:22,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 603 transitions. [2022-12-13 20:53:22,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:53:22,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 603 transitions. [2022-12-13 20:53:22,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,069 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 279 flow. Second operand 4 states and 603 transitions. [2022-12-13 20:53:22,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 357 flow [2022-12-13 20:53:22,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:53:22,071 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 268 flow [2022-12-13 20:53:22,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2022-12-13 20:53:22,071 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2022-12-13 20:53:22,071 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 268 flow [2022-12-13 20:53:22,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:53:22,072 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:22,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 20:53:22,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:22,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting deleteErr13ASSERT_VIOLATIONMEMORY_FREE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:53:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:53:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash 638781747, now seen corresponding path program 1 times [2022-12-13 20:53:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:53:22,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145863318] [2022-12-13 20:53:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:53:22,276 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 [2022-12-13 20:53:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:53:22,278 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:53:22,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 20:53:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:53:22,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:53:22,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:53:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:53:22,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:53:22,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:53:22,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145863318] [2022-12-13 20:53:22,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145863318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:53:22,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:53:22,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:53:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360806001] [2022-12-13 20:53:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:53:22,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:53:22,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:53:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:53:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:53:22,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 333 [2022-12-13 20:53:22,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:53:22,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 333 [2022-12-13 20:53:22,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:53:22,580 INFO L130 PetriNetUnfolder]: 31/101 cut-off events. [2022-12-13 20:53:22,580 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 20:53:22,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 101 events. 31/101 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 288 event pairs, 7 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 350. Up to 68 conditions per place. [2022-12-13 20:53:22,581 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 20:53:22,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 36 transitions, 276 flow [2022-12-13 20:53:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:53:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:53:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2022-12-13 20:53:22,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4394394394394394 [2022-12-13 20:53:22,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2022-12-13 20:53:22,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2022-12-13 20:53:22,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:53:22,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2022-12-13 20:53:22,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,585 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 268 flow. Second operand 3 states and 439 transitions. [2022-12-13 20:53:22,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 36 transitions, 276 flow [2022-12-13 20:53:22,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 36 transitions, 258 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-13 20:53:22,586 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 186 flow [2022-12-13 20:53:22,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2022-12-13 20:53:22,587 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -14 predicate places. [2022-12-13 20:53:22,587 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 186 flow [2022-12-13 20:53:22,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:22,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:53:22,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:22,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 20:53:22,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:22,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:53:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:53:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 638781655, now seen corresponding path program 1 times [2022-12-13 20:53:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:53:22,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399983334] [2022-12-13 20:53:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:53:22,792 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 [2022-12-13 20:53:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:53:22,795 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:53:22,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 20:53:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:53:22,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:53:22,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:53:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:53:23,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:53:23,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:53:23,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399983334] [2022-12-13 20:53:23,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399983334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:53:23,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:53:23,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:53:23,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327290097] [2022-12-13 20:53:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:53:23,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:53:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:53:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:53:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:53:23,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 333 [2022-12-13 20:53:23,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:23,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:53:23,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 333 [2022-12-13 20:53:23,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:53:23,179 INFO L130 PetriNetUnfolder]: 25/83 cut-off events. [2022-12-13 20:53:23,179 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-12-13 20:53:23,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 83 events. 25/83 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 195 event pairs, 7 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 298. Up to 68 conditions per place. [2022-12-13 20:53:23,180 INFO L137 encePairwiseOnDemand]: 329/333 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 20:53:23,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 248 flow [2022-12-13 20:53:23,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:53:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:53:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2022-12-13 20:53:23,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42542542542542544 [2022-12-13 20:53:23,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2022-12-13 20:53:23,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2022-12-13 20:53:23,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:53:23,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2022-12-13 20:53:23,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:23,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:23,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:23,184 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 186 flow. Second operand 3 states and 425 transitions. [2022-12-13 20:53:23,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 248 flow [2022-12-13 20:53:23,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:53:23,185 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 181 flow [2022-12-13 20:53:23,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2022-12-13 20:53:23,185 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -16 predicate places. [2022-12-13 20:53:23,185 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 181 flow [2022-12-13 20:53:23,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:53:23,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:53:23,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:23,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 20:53:23,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:23,386 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2022-12-13 20:53:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:53:23,386 INFO L85 PathProgramCache]: Analyzing trace with hash 227566895, now seen corresponding path program 1 times [2022-12-13 20:53:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:53:23,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072606842] [2022-12-13 20:53:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:53:23,387 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 [2022-12-13 20:53:23,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:53:23,388 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 20:53:23,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 20:53:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:53:23,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:53:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:53:23,796 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 20:53:23,796 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:53:23,796 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (68 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 69 remaining) [2022-12-13 20:53:23,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 69 remaining) [2022-12-13 20:53:23,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 69 remaining) [2022-12-13 20:53:23,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 69 remaining) [2022-12-13 20:53:23,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 69 remaining) [2022-12-13 20:53:23,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 69 remaining) [2022-12-13 20:53:23,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 69 remaining) [2022-12-13 20:53:23,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 69 remaining) [2022-12-13 20:53:23,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 69 remaining) [2022-12-13 20:53:23,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 69 remaining) [2022-12-13 20:53:23,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-12-13 20:53:24,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:53:24,006 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:53:24,022 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:53:24,022 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:53:24,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:53:24 BasicIcfg [2022-12-13 20:53:24,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:53:24,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:53:24,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:53:24,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:53:24,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:50:54" (3/4) ... [2022-12-13 20:53:24,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:53:24,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:53:24,071 INFO L158 Benchmark]: Toolchain (without parser) took 150693.95ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 70.7MB in the beginning and 64.6MB in the end (delta: 6.1MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2022-12-13 20:53:24,071 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 56.6MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:53:24,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 608.75ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 64.3MB in the end (delta: 6.3MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2022-12-13 20:53:24,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.02ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 61.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:53:24,072 INFO L158 Benchmark]: Boogie Preprocessor took 24.16ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:53:24,072 INFO L158 Benchmark]: RCFGBuilder took 569.91ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 70.6MB in the end (delta: -11.0MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-12-13 20:53:24,072 INFO L158 Benchmark]: TraceAbstraction took 149448.07ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 70.0MB in the beginning and 64.6MB in the end (delta: 5.5MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-12-13 20:53:24,073 INFO L158 Benchmark]: Witness Printer took 2.54ms. Allocated memory is still 113.2MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:53:24,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 56.6MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 608.75ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 64.3MB in the end (delta: 6.3MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.02ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 61.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.16ms. Allocated memory is still 94.4MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 569.91ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 70.6MB in the end (delta: -11.0MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * TraceAbstraction took 149448.07ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 70.0MB in the beginning and 64.6MB in the end (delta: 5.5MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 2.54ms. Allocated memory is still 113.2MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.4s, 145 PlacesBefore, 62 PlacesAfterwards, 144 TransitionsBefore, 60 TransitionsAfterwards, 960 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 139 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 182 TotalNumberOfCompositions, 1645 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1063, independent: 936, independent conditional: 0, independent unconditional: 936, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 488, independent: 453, independent conditional: 0, independent unconditional: 453, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1063, independent: 483, independent conditional: 0, independent unconditional: 483, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 488, unknown conditional: 0, unknown unconditional: 488] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=5, argc=5, argv={9:6}, argv={9:6}, id1={7:0}, id2={23:0}, list={0:0}, pthread_create(&id1, ((void *)0), build, list)=-1] [L1048] 1 struct item *list = (struct item *)plist; VAL [list={31:0}, plist={0:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); VAL [elem={1:0}, malloc(sizeof *elem)={1:0}, plist={31:0}, plist={31:0}] [L1043] EXPR 1 \read(**plist) [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [elem={1:0}, elem->next={0:0}, plist={31:0}, plist={31:0}] [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [(elem->next) ? elem->next->data : malloc(sizeof *elem)={2:0}, elem={1:0}, elem->next={0:0}, malloc(sizeof *elem)={2:0}, plist={31:0}, plist={31:0}] [L1073] 0 \read(id1) VAL [\old(argc)=5, \read(id1)=-1, argc=5, argv={9:6}, argv={9:6}, id1={7:0}, id2={23:0}, list={0:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=5, \read(id1)=-1, argc=5, argv={9:6}, argv={9:6}, id1={7:0}, id2={23:0}, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=5, argc=5, argv={9:6}, argv={9:6}, id1={7:0}, id2={23:0}, list={0:0}, plist={0:0}, pthread_create(&id2, ((void *)0), delete, list)=0] [L1075] 0 \read(id2) VAL [\old(argc)=5, \read(id2)=0, argc=5, argv={9:6}, argv={9:6}, id1={7:0}, id2={23:0}, list={0:0}, plist={0:0}] [L1055] 2 struct item *list = (struct item *)plist; [L1056] COND FALSE 2 !(\read(*list)) VAL [list={0:0}, plist={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=5, \read(id2)=0, \result={0:0}, argc=5, argv={9:6}, argv={9:6}, id1={7:0}, id2={23:0}, list={0:0}, list={0:0}, plist={0:0}, plist={0:0}] [L1076] 0 return 0; [L1076] 0 return 0; [L1076] 0 return 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: -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: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) 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: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 240 locations, 69 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: 149.3s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 75.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 24.5s, HoareTripleCheckerStatistics: 29 mSolverCounterUnknown, 3381 SdHoareTripleChecker+Valid, 73.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2269 mSDsluCounter, 692 SdHoareTripleChecker+Invalid, 72.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 469 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4982 IncrementalHoareTripleChecker+Invalid, 5287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 223 mSDtfsCounter, 4982 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 34.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=12, InterpolantAutomatonStates: 72, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 43.1s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 139 ConstructedInterpolants, 13 QuantifiedInterpolants, 1467 SizeOfPredicates, 66 NumberOfNonLiveVariables, 2064 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 4/8 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 [2022-12-13 20:53:24,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d75cdeda-efd9-407e-b3c2-7006ee0451bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample