./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- 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 21:06:25,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:06:25,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:06:25,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:06:25,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:06:25,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:06:25,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:06:25,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:06:25,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:06:25,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:06:25,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:06:25,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:06:25,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:06:25,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:06:25,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:06:25,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:06:25,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:06:25,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:06:25,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:06:25,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:06:25,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:06:25,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:06:25,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:06:25,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:06:25,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:06:25,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:06:25,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:06:25,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:06:25,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:06:25,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:06:25,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:06:25,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:06:25,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:06:25,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:06:25,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:06:25,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:06:25,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:06:25,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:06:25,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:06:25,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:06:25,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:06:25,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:06:25,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:06:25,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:06:25,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:06:25,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:06:25,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:06:25,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:06:25,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:06:25,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:06:25,986 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:06:25,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:06:25,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:06:25,986 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:06:25,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:06:25,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:06:25,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:06:25,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:06:25,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:06:25,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:06:25,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:06:25,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:06:25,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:06:25,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:06:25,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:06:25,989 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:06:25,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:06:25,989 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:06:25,989 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_ddb7350c-8a8d-4152-adcb-b4f83813e268/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-12-13 21:06:26,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:06:26,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:06:26,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:06:26,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:06:26,175 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:06:26,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-12-13 21:06:28,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:06:28,989 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:06:28,989 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-12-13 21:06:28,994 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data/0e6f69852/dcac71aab46f4469bb4fb40fa46965ec/FLAG8237d1f3b [2022-12-13 21:06:29,004 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data/0e6f69852/dcac71aab46f4469bb4fb40fa46965ec [2022-12-13 21:06:29,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:06:29,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:06:29,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:06:29,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:06:29,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:06:29,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:06:29" (1/1) ... [2022-12-13 21:06:29,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3bd259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:29, skipping insertion in model container [2022-12-13 21:06:29,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:06:29" (1/1) ... [2022-12-13 21:06:29,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:06:29,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:06:29,150 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-12-13 21:06:29,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:06:29,167 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 21:06:29,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ed1ab37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:29, skipping insertion in model container [2022-12-13 21:06:29,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:06:29,168 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 21:06:29,169 INFO L158 Benchmark]: Toolchain (without parser) took 161.47ms. Allocated memory is still 111.1MB. Free memory was 77.2MB in the beginning and 67.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 21:06:29,169 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 111.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:06:29,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.48ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 67.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 21:06:29,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 111.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.48ms. Allocated memory is still 111.1MB. Free memory was 76.9MB in the beginning and 67.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 117]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- 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 21:06:30,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:06:30,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:06:30,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:06:30,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:06:30,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:06:30,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:06:30,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:06:30,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:06:30,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:06:30,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:06:30,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:06:30,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:06:30,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:06:30,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:06:30,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:06:30,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:06:30,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:06:30,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:06:30,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:06:30,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:06:30,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:06:30,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:06:30,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:06:30,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:06:30,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:06:30,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:06:30,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:06:30,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:06:30,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:06:30,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:06:30,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:06:30,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:06:30,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:06:30,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:06:30,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:06:30,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:06:30,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:06:30,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:06:30,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:06:30,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:06:30,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:06:30,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:06:30,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:06:30,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:06:30,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:06:30,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:06:30,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:06:30,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:06:30,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:06:30,652 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:06:30,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:06:30,653 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:06:30,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:06:30,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:06:30,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:06:30,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:06:30,653 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:06:30,654 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:06:30,654 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:06:30,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:06:30,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:06:30,654 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:06:30,654 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:06:30,655 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:06:30,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:06:30,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:06:30,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:06:30,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:06:30,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:06:30,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:06:30,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:06:30,656 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:06:30,656 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:06:30,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:06:30,656 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:06:30,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:06:30,656 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:06:30,657 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:06:30,657 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_ddb7350c-8a8d-4152-adcb-b4f83813e268/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-12-13 21:06:30,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:06:30,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:06:30,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:06:30,906 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:06:30,906 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:06:30,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-12-13 21:06:33,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:06:33,594 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:06:33,594 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-12-13 21:06:33,599 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data/c6ed8dc66/63eb4a64585d4b73bd602d4683772d4e/FLAGa66eb975a [2022-12-13 21:06:33,610 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/data/c6ed8dc66/63eb4a64585d4b73bd602d4683772d4e [2022-12-13 21:06:33,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:06:33,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:06:33,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:06:33,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:06:33,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:06:33,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3807a7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33, skipping insertion in model container [2022-12-13 21:06:33,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:06:33,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:06:33,763 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-12-13 21:06:33,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:06:33,782 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 21:06:33,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:06:33,796 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-12-13 21:06:33,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:06:33,804 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:06:33,822 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-12-13 21:06:33,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:06:33,837 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:06:33,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33 WrapperNode [2022-12-13 21:06:33,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:06:33,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:06:33,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:06:33,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:06:33,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,873 INFO L138 Inliner]: procedures = 28, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 268 [2022-12-13 21:06:33,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:06:33,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:06:33,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:06:33,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:06:33,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:06:33,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:06:33,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:06:33,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:06:33,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (1/1) ... [2022-12-13 21:06:33,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:06:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:33,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:06:33,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:06:33,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:06:33,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 21:06:33,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:06:33,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 21:06:33,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:06:33,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:06:33,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:06:33,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:06:33,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:06:33,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:06:33,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:06:33,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:06:33,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:06:33,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:06:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 21:06:33,978 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 21:06:34,078 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:06:34,079 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:06:34,725 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:06:34,733 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:06:34,733 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 21:06:34,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:06:34 BoogieIcfgContainer [2022-12-13 21:06:34,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:06:34,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:06:34,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:06:34,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:06:34,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:06:33" (1/3) ... [2022-12-13 21:06:34,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92a61dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:06:34, skipping insertion in model container [2022-12-13 21:06:34,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:33" (2/3) ... [2022-12-13 21:06:34,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92a61dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:06:34, skipping insertion in model container [2022-12-13 21:06:34,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:06:34" (3/3) ... [2022-12-13 21:06:34,742 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-12-13 21:06:34,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:06:34,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-12-13 21:06:34,756 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:06:34,842 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 21:06:34,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 387 transitions, 798 flow [2022-12-13 21:06:34,959 INFO L130 PetriNetUnfolder]: 28/384 cut-off events. [2022-12-13 21:06:34,959 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:06:34,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 384 events. 28/384 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 847 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 290. Up to 3 conditions per place. [2022-12-13 21:06:34,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 387 transitions, 798 flow [2022-12-13 21:06:34,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 379 transitions, 776 flow [2022-12-13 21:06:34,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:06:34,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 361 places, 379 transitions, 776 flow [2022-12-13 21:06:34,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 361 places, 379 transitions, 776 flow [2022-12-13 21:06:34,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 379 transitions, 776 flow [2022-12-13 21:06:35,038 INFO L130 PetriNetUnfolder]: 28/379 cut-off events. [2022-12-13 21:06:35,038 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:06:35,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 379 events. 28/379 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 854 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 290. Up to 3 conditions per place. [2022-12-13 21:06:35,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 25650 [2022-12-13 21:07:14,012 INFO L134 LiptonReduction]: Checked pairs total: 42202 [2022-12-13 21:07:14,012 INFO L136 LiptonReduction]: Total number of compositions: 462 [2022-12-13 21:07:14,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:07:14,027 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;@3f4030aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:07:14,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2022-12-13 21:07:14,029 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:07:14,029 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:07:14,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:07:14,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:07:14,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:07:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:07:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash 49265, now seen corresponding path program 1 times [2022-12-13 21:07:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:07:14,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900959461] [2022-12-13 21:07:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:07:14,046 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 21:07:14,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:07:14,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:14,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:14,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:07:14,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:07:14,303 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:07:14,304 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 21:07:14,340 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 21:07:14,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:07:14,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:07:14,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900959461] [2022-12-13 21:07:14,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900959461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:07:14,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:07:14,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:07:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693236443] [2022-12-13 21:07:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:07:14,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:07:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:07:14,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:07:14,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:07:14,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 849 [2022-12-13 21:07:14,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 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 21:07:14,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:07:14,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 849 [2022-12-13 21:07:14,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:07:20,705 INFO L130 PetriNetUnfolder]: 36919/50440 cut-off events. [2022-12-13 21:07:20,705 INFO L131 PetriNetUnfolder]: For 902/902 co-relation queries the response was YES. [2022-12-13 21:07:20,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101941 conditions, 50440 events. 36919/50440 cut-off events. For 902/902 co-relation queries the response was YES. Maximal size of possible extension queue 2605. Compared 306042 event pairs, 31514 based on Foata normal form. 0/16673 useless extension candidates. Maximal degree in co-relation 48308. Up to 25223 conditions per place. [2022-12-13 21:07:20,905 INFO L137 encePairwiseOnDemand]: 835/849 looper letters, 138 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2022-12-13 21:07:20,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 612 flow [2022-12-13 21:07:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:07:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:07:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1195 transitions. [2022-12-13 21:07:20,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4691794267765999 [2022-12-13 21:07:20,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1195 transitions. [2022-12-13 21:07:20,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1195 transitions. [2022-12-13 21:07:20,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:07:20,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1195 transitions. [2022-12-13 21:07:20,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 398.3333333333333) internal successors, (1195), 3 states have internal predecessors, (1195), 0 states have call successors, (0), 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 21:07:20,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:20,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:20,937 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 176 flow. Second operand 3 states and 1195 transitions. [2022-12-13 21:07:20,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 612 flow [2022-12-13 21:07:20,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 144 transitions, 588 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:07:20,951 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 204 flow [2022-12-13 21:07:20,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2022-12-13 21:07:20,955 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2022-12-13 21:07:20,955 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 204 flow [2022-12-13 21:07:20,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 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 21:07:20,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:07:20,956 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:07:20,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:21,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:21,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:07:21,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:07:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash 49264, now seen corresponding path program 1 times [2022-12-13 21:07:21,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:07:21,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009827132] [2022-12-13 21:07:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:07:21,159 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 21:07:21,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:07:21,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:21,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:21,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:07:21,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:07:21,343 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 21:07:21,343 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 21:07:21,353 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 21:07:21,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:07:21,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:07:21,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009827132] [2022-12-13 21:07:21,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009827132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:07:21,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:07:21,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:07:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959872522] [2022-12-13 21:07:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:07:21,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:07:21,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:07:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:07:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:07:21,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 849 [2022-12-13 21:07:21,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 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 21:07:21,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:07:21,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 849 [2022-12-13 21:07:21,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:07:26,509 INFO L130 PetriNetUnfolder]: 36919/50434 cut-off events. [2022-12-13 21:07:26,509 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-12-13 21:07:26,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101314 conditions, 50434 events. 36919/50434 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 2951. Compared 307723 event pairs, 31514 based on Foata normal form. 4/16683 useless extension candidates. Maximal degree in co-relation 50637. Up to 50434 conditions per place. [2022-12-13 21:07:26,665 INFO L137 encePairwiseOnDemand]: 845/849 looper letters, 75 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2022-12-13 21:07:26,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 350 flow [2022-12-13 21:07:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:07:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:07:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-12-13 21:07:26,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43659206910090304 [2022-12-13 21:07:26,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-12-13 21:07:26,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-12-13 21:07:26,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:07:26,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-12-13 21:07:26,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 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 21:07:26,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:26,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:26,687 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 204 flow. Second operand 3 states and 1112 transitions. [2022-12-13 21:07:26,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 350 flow [2022-12-13 21:07:26,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:07:26,690 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 188 flow [2022-12-13 21:07:26,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2022-12-13 21:07:26,691 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2022-12-13 21:07:26,691 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 188 flow [2022-12-13 21:07:26,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 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 21:07:26,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:07:26,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:07:26,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:26,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:26,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:07:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:07:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1535622, now seen corresponding path program 1 times [2022-12-13 21:07:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:07:26,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810582281] [2022-12-13 21:07:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:07:26,899 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 21:07:26,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:07:26,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:26,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:07:26,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:07:27,061 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:07:27,061 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 21:07:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:07:27,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:07:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:07:27,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:07:27,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810582281] [2022-12-13 21:07:27,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810582281] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:07:27,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:07:27,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 21:07:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751913058] [2022-12-13 21:07:27,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:07:27,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:07:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:07:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:07:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:07:28,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 849 [2022-12-13 21:07:28,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:07:28,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:07:28,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 849 [2022-12-13 21:07:28,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:07:30,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:07:31,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:07:38,936 INFO L130 PetriNetUnfolder]: 55388/75665 cut-off events. [2022-12-13 21:07:38,936 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2022-12-13 21:07:38,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151997 conditions, 75665 events. 55388/75665 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 4092. Compared 483455 event pairs, 47271 based on Foata normal form. 0/25020 useless extension candidates. Maximal degree in co-relation 151989. Up to 25221 conditions per place. [2022-12-13 21:07:39,182 INFO L137 encePairwiseOnDemand]: 837/849 looper letters, 194 selfloop transitions, 27 changer transitions 0/221 dead transitions. [2022-12-13 21:07:39,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 221 transitions, 962 flow [2022-12-13 21:07:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:07:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:07:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2216 transitions. [2022-12-13 21:07:39,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43502159403219476 [2022-12-13 21:07:39,187 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2216 transitions. [2022-12-13 21:07:39,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2216 transitions. [2022-12-13 21:07:39,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:07:39,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2216 transitions. [2022-12-13 21:07:39,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 369.3333333333333) internal successors, (2216), 6 states have internal predecessors, (2216), 0 states have call successors, (0), 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 21:07:39,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 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 21:07:39,198 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 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 21:07:39,198 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 188 flow. Second operand 6 states and 2216 transitions. [2022-12-13 21:07:39,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 221 transitions, 962 flow [2022-12-13 21:07:39,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 221 transitions, 961 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:07:39,201 INFO L231 Difference]: Finished difference. Result has 79 places, 97 transitions, 391 flow [2022-12-13 21:07:39,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=79, PETRI_TRANSITIONS=97} [2022-12-13 21:07:39,202 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -2 predicate places. [2022-12-13 21:07:39,202 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 97 transitions, 391 flow [2022-12-13 21:07:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 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 21:07:39,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:07:39,203 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:07:39,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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)] Forceful destruction successful, exit code 0 [2022-12-13 21:07:39,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:39,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:07:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:07:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash 47658505, now seen corresponding path program 1 times [2022-12-13 21:07:39,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:07:39,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974809191] [2022-12-13 21:07:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:07:39,408 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 21:07:39,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:07:39,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:39,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:39,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 21:07:39,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:07:39,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:39,606 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-12-13 21:07:39,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-12-13 21:07:39,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:39,682 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 20 [2022-12-13 21:07:39,725 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 21:07:39,726 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 14 treesize of output 20 [2022-12-13 21:07:39,738 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 21:07:39,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:07:39,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:07:39,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974809191] [2022-12-13 21:07:39,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974809191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:07:39,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:07:39,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:07:39,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965277228] [2022-12-13 21:07:39,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:07:39,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:07:39,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:07:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:07:39,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:07:40,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 849 [2022-12-13 21:07:40,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 97 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 21:07:40,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:07:40,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 849 [2022-12-13 21:07:40,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:07:45,531 INFO L130 PetriNetUnfolder]: 42450/58608 cut-off events. [2022-12-13 21:07:45,531 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-12-13 21:07:45,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117957 conditions, 58608 events. 42450/58608 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 3072. Compared 371311 event pairs, 36099 based on Foata normal form. 0/20915 useless extension candidates. Maximal degree in co-relation 117944. Up to 58608 conditions per place. [2022-12-13 21:07:45,753 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 21:07:45,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 557 flow [2022-12-13 21:07:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:07:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:07:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1130 transitions. [2022-12-13 21:07:45,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4436592069100903 [2022-12-13 21:07:45,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1130 transitions. [2022-12-13 21:07:45,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1130 transitions. [2022-12-13 21:07:45,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:07:45,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1130 transitions. [2022-12-13 21:07:45,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.6666666666667) internal successors, (1130), 3 states have internal predecessors, (1130), 0 states have call successors, (0), 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 21:07:45,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:45,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:45,762 INFO L175 Difference]: Start difference. First operand has 79 places, 97 transitions, 391 flow. Second operand 3 states and 1130 transitions. [2022-12-13 21:07:45,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 557 flow [2022-12-13 21:07:45,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 527 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 21:07:45,765 INFO L231 Difference]: Finished difference. Result has 78 places, 93 transitions, 343 flow [2022-12-13 21:07:45,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2022-12-13 21:07:45,766 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2022-12-13 21:07:45,766 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 343 flow [2022-12-13 21:07:45,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 21:07:45,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:07:45,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:07:45,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:45,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:07:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:07:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 47658506, now seen corresponding path program 1 times [2022-12-13 21:07:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:07:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643044117] [2022-12-13 21:07:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:07:45,972 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 21:07:45,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:07:45,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:45,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:07:46,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:07:46,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:07:46,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:46,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:46,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:46,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:46,190 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 21:07:46,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-12-13 21:07:46,210 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 21:07:46,211 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 23 treesize of output 19 [2022-12-13 21:07:46,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:46,263 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 21:07:46,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:07:46,289 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 21:07:46,313 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 21:07:46,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:07:46,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:07:46,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643044117] [2022-12-13 21:07:46,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643044117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:07:46,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:07:46,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:07:46,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146983257] [2022-12-13 21:07:46,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:07:46,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:07:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:07:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:07:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:07:46,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 849 [2022-12-13 21:07:46,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 93 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 21:07:46,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:07:46,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 849 [2022-12-13 21:07:46,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:07:51,154 INFO L130 PetriNetUnfolder]: 29512/41551 cut-off events. [2022-12-13 21:07:51,154 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 21:07:51,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83817 conditions, 41551 events. 29512/41551 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 2053. Compared 262126 event pairs, 24927 based on Foata normal form. 0/16799 useless extension candidates. Maximal degree in co-relation 83803. Up to 41551 conditions per place. [2022-12-13 21:07:51,304 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2022-12-13 21:07:51,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 501 flow [2022-12-13 21:07:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:07:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:07:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1128 transitions. [2022-12-13 21:07:51,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44287396937573614 [2022-12-13 21:07:51,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1128 transitions. [2022-12-13 21:07:51,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1128 transitions. [2022-12-13 21:07:51,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:07:51,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1128 transitions. [2022-12-13 21:07:51,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 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 21:07:51,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:51,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:07:51,314 INFO L175 Difference]: Start difference. First operand has 78 places, 93 transitions, 343 flow. Second operand 3 states and 1128 transitions. [2022-12-13 21:07:51,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 501 flow [2022-12-13 21:07:51,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:07:51,316 INFO L231 Difference]: Finished difference. Result has 77 places, 89 transitions, 324 flow [2022-12-13 21:07:51,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=77, PETRI_TRANSITIONS=89} [2022-12-13 21:07:51,316 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2022-12-13 21:07:51,316 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 89 transitions, 324 flow [2022-12-13 21:07:51,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 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 21:07:51,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:07:51,317 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:07:51,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:51,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:51,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:07:51,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:07:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1488577103, now seen corresponding path program 2 times [2022-12-13 21:07:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:07:51,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228179303] [2022-12-13 21:07:51,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:07:51,520 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 21:07:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:07:51,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:51,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:07:51,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:07:51,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:07:51,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:07:51,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:07:51,768 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:07:51,768 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 21:07:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:07:51,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:07:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:07:52,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:07:52,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228179303] [2022-12-13 21:07:52,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228179303] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:07:52,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:07:52,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 21:07:52,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890366545] [2022-12-13 21:07:52,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:07:52,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:07:52,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:07:52,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:07:52,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:08:00,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 849 [2022-12-13 21:08:00,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 89 transitions, 324 flow. Second operand has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 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 21:08:00,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:08:00,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 849 [2022-12-13 21:08:00,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:08:03,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:05,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:07,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:09,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:11,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:13,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:15,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:17,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:19,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:21,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:23,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:25,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:27,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:29,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:08:48,858 INFO L130 PetriNetUnfolder]: 98353/138463 cut-off events. [2022-12-13 21:08:48,859 INFO L131 PetriNetUnfolder]: For 823/823 co-relation queries the response was YES. [2022-12-13 21:08:49,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279207 conditions, 138463 events. 98353/138463 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 4392. Compared 970644 event pairs, 83090 based on Foata normal form. 12/55962 useless extension candidates. Maximal degree in co-relation 279192. Up to 13862 conditions per place. [2022-12-13 21:08:49,499 INFO L137 encePairwiseOnDemand]: 839/849 looper letters, 590 selfloop transitions, 53 changer transitions 0/643 dead transitions. [2022-12-13 21:08:49,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 643 transitions, 2956 flow [2022-12-13 21:08:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:08:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 21:08:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6333 transitions. [2022-12-13 21:08:49,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4387861151527749 [2022-12-13 21:08:49,511 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6333 transitions. [2022-12-13 21:08:49,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6333 transitions. [2022-12-13 21:08:49,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:08:49,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6333 transitions. [2022-12-13 21:08:49,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 372.52941176470586) internal successors, (6333), 17 states have internal predecessors, (6333), 0 states have call successors, (0), 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 21:08:49,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 849.0) internal successors, (15282), 18 states have internal predecessors, (15282), 0 states have call successors, (0), 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 21:08:49,537 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 849.0) internal successors, (15282), 18 states have internal predecessors, (15282), 0 states have call successors, (0), 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 21:08:49,537 INFO L175 Difference]: Start difference. First operand has 77 places, 89 transitions, 324 flow. Second operand 17 states and 6333 transitions. [2022-12-13 21:08:49,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 643 transitions, 2956 flow [2022-12-13 21:08:49,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 643 transitions, 2955 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:08:49,543 INFO L231 Difference]: Finished difference. Result has 98 places, 123 transitions, 704 flow [2022-12-13 21:08:49,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=704, PETRI_PLACES=98, PETRI_TRANSITIONS=123} [2022-12-13 21:08:49,544 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2022-12-13 21:08:49,544 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 123 transitions, 704 flow [2022-12-13 21:08:49,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 335.0) internal successors, (4020), 12 states have internal predecessors, (4020), 0 states have call successors, (0), 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 21:08:49,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:08:49,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:08:49,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:08:49,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:08:49,748 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:08:49,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:08:49,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1444783488, now seen corresponding path program 1 times [2022-12-13 21:08:49,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:08:49,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728358836] [2022-12-13 21:08:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:08:49,752 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 21:08:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:08:49,755 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:08:49,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:08:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:08:49,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:08:49,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:08:49,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:08:49,968 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-12-13 21:08:49,968 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 4 case distinctions, treesize of input 29 treesize of output 48 [2022-12-13 21:08:50,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:08:50,148 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-12-13 21:08:50,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 36 [2022-12-13 21:08:50,299 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-12-13 21:08:50,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-12-13 21:08:50,453 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 21:08:50,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:08:50,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:08:50,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728358836] [2022-12-13 21:08:50,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728358836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:08:50,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:08:50,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:08:50,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844058907] [2022-12-13 21:08:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:08:50,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:08:50,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:08:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:08:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:08:51,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 849 [2022-12-13 21:08:51,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 123 transitions, 704 flow. Second operand has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 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 21:08:51,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:08:51,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 849 [2022-12-13 21:08:51,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:09:05,366 INFO L130 PetriNetUnfolder]: 96173/135163 cut-off events. [2022-12-13 21:09:05,366 INFO L131 PetriNetUnfolder]: For 885/885 co-relation queries the response was YES. [2022-12-13 21:09:05,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272720 conditions, 135163 events. 96173/135163 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 4033. Compared 937611 event pairs, 81210 based on Foata normal form. 0/55277 useless extension candidates. Maximal degree in co-relation 272698. Up to 135163 conditions per place. [2022-12-13 21:09:06,072 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 120 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2022-12-13 21:09:06,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 121 transitions, 942 flow [2022-12-13 21:09:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:09:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:09:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1126 transitions. [2022-12-13 21:09:06,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44208873184138203 [2022-12-13 21:09:06,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1126 transitions. [2022-12-13 21:09:06,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1126 transitions. [2022-12-13 21:09:06,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:09:06,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1126 transitions. [2022-12-13 21:09:06,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.3333333333333) internal successors, (1126), 3 states have internal predecessors, (1126), 0 states have call successors, (0), 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 21:09:06,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:09:06,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:09:06,084 INFO L175 Difference]: Start difference. First operand has 98 places, 123 transitions, 704 flow. Second operand 3 states and 1126 transitions. [2022-12-13 21:09:06,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 121 transitions, 942 flow [2022-12-13 21:09:06,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 121 transitions, 839 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-12-13 21:09:06,088 INFO L231 Difference]: Finished difference. Result has 94 places, 121 transitions, 599 flow [2022-12-13 21:09:06,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=94, PETRI_TRANSITIONS=121} [2022-12-13 21:09:06,089 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2022-12-13 21:09:06,089 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 121 transitions, 599 flow [2022-12-13 21:09:06,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 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 21:09:06,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:09:06,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:09:06,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:06,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:06,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:09:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:09:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1444783487, now seen corresponding path program 1 times [2022-12-13 21:09:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:09:06,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552080230] [2022-12-13 21:09:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:09:06,296 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 21:09:06,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:09:06,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:06,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:09:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:09:06,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:09:06,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:09:06,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:09:06,557 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2022-12-13 21:09:06,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2022-12-13 21:09:06,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-12-13 21:09:06,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:09:06,630 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 21:09:06,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:09:06,652 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 21:09:06,700 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 21:09:06,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:09:06,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:09:06,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552080230] [2022-12-13 21:09:06,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552080230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:09:06,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:09:06,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:09:06,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188010065] [2022-12-13 21:09:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:09:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:09:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:09:06,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:09:06,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:09:07,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 849 [2022-12-13 21:09:07,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 121 transitions, 599 flow. Second operand has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 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 21:09:07,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:09:07,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 849 [2022-12-13 21:09:07,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:09:22,727 INFO L130 PetriNetUnfolder]: 93993/131863 cut-off events. [2022-12-13 21:09:22,727 INFO L131 PetriNetUnfolder]: For 921/921 co-relation queries the response was YES. [2022-12-13 21:09:23,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266061 conditions, 131863 events. 93993/131863 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 3891. Compared 907264 event pairs, 79330 based on Foata normal form. 0/54603 useless extension candidates. Maximal degree in co-relation 266038. Up to 131863 conditions per place. [2022-12-13 21:09:23,343 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 118 selfloop transitions, 1 changer transitions 0/119 dead transitions. [2022-12-13 21:09:23,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 119 transitions, 833 flow [2022-12-13 21:09:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:09:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:09:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1124 transitions. [2022-12-13 21:09:23,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44130349430702787 [2022-12-13 21:09:23,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1124 transitions. [2022-12-13 21:09:23,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1124 transitions. [2022-12-13 21:09:23,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:09:23,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1124 transitions. [2022-12-13 21:09:23,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 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 21:09:23,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:09:23,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:09:23,351 INFO L175 Difference]: Start difference. First operand has 94 places, 121 transitions, 599 flow. Second operand 3 states and 1124 transitions. [2022-12-13 21:09:23,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 119 transitions, 833 flow [2022-12-13 21:09:23,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 119 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:09:23,355 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 596 flow [2022-12-13 21:09:23,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2022-12-13 21:09:23,355 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2022-12-13 21:09:23,355 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 596 flow [2022-12-13 21:09:23,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 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 21:09:23,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:09:23,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:09:23,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:23,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:23,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:09:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:09:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1838618584, now seen corresponding path program 1 times [2022-12-13 21:09:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:09:23,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276823039] [2022-12-13 21:09:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:09:23,561 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 21:09:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:09:23,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:23,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:09:23,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:09:23,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:09:23,686 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 21:09:23,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:09:23,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:09:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276823039] [2022-12-13 21:09:23,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276823039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:09:23,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:09:23,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:09:23,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237180341] [2022-12-13 21:09:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:09:23,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:09:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:09:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:09:23,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:09:23,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 849 [2022-12-13 21:09:23,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 596 flow. Second operand has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 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 21:09:23,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:09:23,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 849 [2022-12-13 21:09:23,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:09:40,928 INFO L130 PetriNetUnfolder]: 114474/162262 cut-off events. [2022-12-13 21:09:40,928 INFO L131 PetriNetUnfolder]: For 1036/1036 co-relation queries the response was YES. [2022-12-13 21:09:41,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327462 conditions, 162262 events. 114474/162262 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 4820. Compared 1177619 event pairs, 82380 based on Foata normal form. 0/71422 useless extension candidates. Maximal degree in co-relation 327438. Up to 131862 conditions per place. [2022-12-13 21:09:41,794 INFO L137 encePairwiseOnDemand]: 840/849 looper letters, 226 selfloop transitions, 4 changer transitions 0/230 dead transitions. [2022-12-13 21:09:41,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 230 transitions, 1503 flow [2022-12-13 21:09:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:09:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:09:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1865 transitions. [2022-12-13 21:09:41,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43934040047114253 [2022-12-13 21:09:41,797 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1865 transitions. [2022-12-13 21:09:41,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1865 transitions. [2022-12-13 21:09:41,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:09:41,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1865 transitions. [2022-12-13 21:09:41,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 373.0) internal successors, (1865), 5 states have internal predecessors, (1865), 0 states have call successors, (0), 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 21:09:41,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 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 21:09:41,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 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 21:09:41,803 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 596 flow. Second operand 5 states and 1865 transitions. [2022-12-13 21:09:41,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 230 transitions, 1503 flow [2022-12-13 21:09:41,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 230 transitions, 1502 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:09:41,807 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 620 flow [2022-12-13 21:09:41,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=620, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2022-12-13 21:09:41,808 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2022-12-13 21:09:41,808 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 620 flow [2022-12-13 21:09:41,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 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 21:09:41,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:09:41,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:09:41,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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)] Forceful destruction successful, exit code 0 [2022-12-13 21:09:42,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:42,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:09:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:09:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1059372852, now seen corresponding path program 1 times [2022-12-13 21:09:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:09:42,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057398231] [2022-12-13 21:09:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:09:42,010 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 21:09:42,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:09:42,011 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:42,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:09:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:09:42,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:09:42,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:09:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:09:42,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:09:42,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:09:42,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057398231] [2022-12-13 21:09:42,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057398231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:09:42,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:09:42,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:09:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042995004] [2022-12-13 21:09:42,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:09:42,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:09:42,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:09:42,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:09:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:09:42,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 849 [2022-12-13 21:09:42,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 620 flow. Second operand has 5 states, 5 states have (on average 345.6) internal successors, (1728), 5 states have internal predecessors, (1728), 0 states have call successors, (0), 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 21:09:42,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:09:42,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 849 [2022-12-13 21:09:42,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:07,961 INFO L130 PetriNetUnfolder]: 155416/223014 cut-off events. [2022-12-13 21:10:07,961 INFO L131 PetriNetUnfolder]: For 24704/24704 co-relation queries the response was YES. [2022-12-13 21:10:08,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477981 conditions, 223014 events. 155416/223014 cut-off events. For 24704/24704 co-relation queries the response was YES. Maximal size of possible extension queue 6598. Compared 1730500 event pairs, 103380 based on Foata normal form. 2540/110094 useless extension candidates. Maximal degree in co-relation 477954. Up to 162250 conditions per place. [2022-12-13 21:10:09,247 INFO L137 encePairwiseOnDemand]: 840/849 looper letters, 196 selfloop transitions, 15 changer transitions 0/211 dead transitions. [2022-12-13 21:10:09,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 211 transitions, 1347 flow [2022-12-13 21:10:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:10:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:10:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1862 transitions. [2022-12-13 21:10:09,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4386336866902238 [2022-12-13 21:10:09,251 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1862 transitions. [2022-12-13 21:10:09,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1862 transitions. [2022-12-13 21:10:09,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:09,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1862 transitions. [2022-12-13 21:10:09,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 372.4) internal successors, (1862), 5 states have internal predecessors, (1862), 0 states have call successors, (0), 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 21:10:09,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 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 21:10:09,258 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 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 21:10:09,258 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 620 flow. Second operand 5 states and 1862 transitions. [2022-12-13 21:10:09,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 211 transitions, 1347 flow [2022-12-13 21:10:09,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 211 transitions, 1341 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 21:10:09,378 INFO L231 Difference]: Finished difference. Result has 103 places, 122 transitions, 673 flow [2022-12-13 21:10:09,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=673, PETRI_PLACES=103, PETRI_TRANSITIONS=122} [2022-12-13 21:10:09,378 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 22 predicate places. [2022-12-13 21:10:09,378 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 122 transitions, 673 flow [2022-12-13 21:10:09,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.6) internal successors, (1728), 5 states have internal predecessors, (1728), 0 states have call successors, (0), 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 21:10:09,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:09,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:10:09,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:10:09,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:10:09,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:10:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1162459083, now seen corresponding path program 1 times [2022-12-13 21:10:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:10:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687221294] [2022-12-13 21:10:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:09,584 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 21:10:09,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:10:09,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:10:09,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:10:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:09,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:10:09,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:10:09,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:10:09,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:10:09,780 INFO L321 Elim1Store]: treesize reduction 89, result has 14.4 percent of original size [2022-12-13 21:10:09,780 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 2 case distinctions, treesize of input 29 treesize of output 40 [2022-12-13 21:10:09,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:10:09,872 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-12-13 21:10:09,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-12-13 21:10:10,265 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 21:10:10,266 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 14 treesize of output 20 [2022-12-13 21:10:10,409 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 21:10:10,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:10:10,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:10:10,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687221294] [2022-12-13 21:10:10,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687221294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:10,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:10,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:10:10,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351615521] [2022-12-13 21:10:10,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:10,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:10:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:10:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:10:10,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:10:11,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 849 [2022-12-13 21:10:11,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 122 transitions, 673 flow. Second operand has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 21:10:11,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:11,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 849 [2022-12-13 21:10:11,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:10:35,166 INFO L130 PetriNetUnfolder]: 148746/212844 cut-off events. [2022-12-13 21:10:35,167 INFO L131 PetriNetUnfolder]: For 70392/70392 co-relation queries the response was YES. [2022-12-13 21:10:35,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482515 conditions, 212844 events. 148746/212844 cut-off events. For 70392/70392 co-relation queries the response was YES. Maximal size of possible extension queue 6305. Compared 1612833 event pairs, 127290 based on Foata normal form. 0/104644 useless extension candidates. Maximal degree in co-relation 482486. Up to 212844 conditions per place. [2022-12-13 21:10:36,577 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 119 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2022-12-13 21:10:36,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 120 transitions, 909 flow [2022-12-13 21:10:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:10:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:10:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2022-12-13 21:10:36,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4369846878680801 [2022-12-13 21:10:36,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2022-12-13 21:10:36,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2022-12-13 21:10:36,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:10:36,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2022-12-13 21:10:36,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 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 21:10:36,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:10:36,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:10:36,588 INFO L175 Difference]: Start difference. First operand has 103 places, 122 transitions, 673 flow. Second operand 3 states and 1113 transitions. [2022-12-13 21:10:36,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 120 transitions, 909 flow [2022-12-13 21:10:36,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 120 transitions, 893 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 21:10:36,653 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 655 flow [2022-12-13 21:10:36,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=655, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2022-12-13 21:10:36,654 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-12-13 21:10:36,654 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 655 flow [2022-12-13 21:10:36,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 21:10:36,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:10:36,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:10:36,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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)] Forceful destruction successful, exit code 0 [2022-12-13 21:10:36,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:10:36,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:10:36,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1162459085, now seen corresponding path program 1 times [2022-12-13 21:10:36,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:10:36,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102568689] [2022-12-13 21:10:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:36,859 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 21:10:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:10:36,863 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:10:36,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:10:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:36,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:10:36,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:10:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:10:37,056 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-12-13 21:10:37,057 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 2 case distinctions, treesize of input 15 treesize of output 38 [2022-12-13 21:10:37,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-12-13 21:10:37,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:10:37,114 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 21:10:37,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:10:37,142 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 21:10:37,197 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 21:10:37,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:10:37,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:10:37,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102568689] [2022-12-13 21:10:37,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102568689] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:10:37,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:10:37,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:10:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567558196] [2022-12-13 21:10:37,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:10:37,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:10:37,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:10:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:10:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:10:37,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 849 [2022-12-13 21:10:37,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 655 flow. Second operand has 5 states, 5 states have (on average 352.6) internal successors, (1763), 5 states have internal predecessors, (1763), 0 states have call successors, (0), 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 21:10:37,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:10:37,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 849 [2022-12-13 21:10:37,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:00,190 INFO L130 PetriNetUnfolder]: 142076/202674 cut-off events. [2022-12-13 21:11:00,191 INFO L131 PetriNetUnfolder]: For 66560/66560 co-relation queries the response was YES. [2022-12-13 21:11:00,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459090 conditions, 202674 events. 142076/202674 cut-off events. For 66560/66560 co-relation queries the response was YES. Maximal size of possible extension queue 6041. Compared 1521618 event pairs, 121400 based on Foata normal form. 0/101734 useless extension candidates. Maximal degree in co-relation 459060. Up to 202674 conditions per place. [2022-12-13 21:11:01,182 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 117 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2022-12-13 21:11:01,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 887 flow [2022-12-13 21:11:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:11:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:11:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1114 transitions. [2022-12-13 21:11:01,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43737730663525715 [2022-12-13 21:11:01,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1114 transitions. [2022-12-13 21:11:01,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1114 transitions. [2022-12-13 21:11:01,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:01,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1114 transitions. [2022-12-13 21:11:01,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.3333333333333) internal successors, (1114), 3 states have internal predecessors, (1114), 0 states have call successors, (0), 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 21:11:01,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:11:01,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 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 21:11:01,189 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 655 flow. Second operand 3 states and 1114 transitions. [2022-12-13 21:11:01,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 887 flow [2022-12-13 21:11:01,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 118 transitions, 886 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:11:01,217 INFO L231 Difference]: Finished difference. Result has 101 places, 118 transitions, 652 flow [2022-12-13 21:11:01,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=652, PETRI_PLACES=101, PETRI_TRANSITIONS=118} [2022-12-13 21:11:01,217 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 20 predicate places. [2022-12-13 21:11:01,217 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 118 transitions, 652 flow [2022-12-13 21:11:01,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 352.6) internal successors, (1763), 5 states have internal predecessors, (1763), 0 states have call successors, (0), 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 21:11:01,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:01,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:01,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:11:01,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:11:01,418 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:11:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1584945988, now seen corresponding path program 1 times [2022-12-13 21:11:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:11:01,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480994942] [2022-12-13 21:11:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:01,420 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 21:11:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:11:01,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:11:01,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:11:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:01,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:11:01,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:11:01,565 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 21:11:01,584 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 21:11:01,584 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 14 treesize of output 20 [2022-12-13 21:11:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:11:01,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:11:01,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:11:01,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480994942] [2022-12-13 21:11:01,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480994942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:11:01,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:11:01,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:11:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491598960] [2022-12-13 21:11:01,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:11:01,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:11:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:11:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:11:01,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:11:01,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 849 [2022-12-13 21:11:01,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 118 transitions, 652 flow. Second operand has 4 states, 4 states have (on average 338.25) internal successors, (1353), 4 states have internal predecessors, (1353), 0 states have call successors, (0), 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 21:11:01,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:11:01,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 849 [2022-12-13 21:11:01,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:11:19,497 INFO L130 PetriNetUnfolder]: 112816/161054 cut-off events. [2022-12-13 21:11:19,497 INFO L131 PetriNetUnfolder]: For 57200/57200 co-relation queries the response was YES. [2022-12-13 21:11:20,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364211 conditions, 161054 events. 112816/161054 cut-off events. For 57200/57200 co-relation queries the response was YES. Maximal size of possible extension queue 4764. Compared 1176307 event pairs, 94980 based on Foata normal form. 0/85714 useless extension candidates. Maximal degree in co-relation 364180. Up to 161004 conditions per place. [2022-12-13 21:11:20,558 INFO L137 encePairwiseOnDemand]: 843/849 looper letters, 103 selfloop transitions, 11 changer transitions 0/114 dead transitions. [2022-12-13 21:11:20,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 868 flow [2022-12-13 21:11:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:11:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:11:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1403 transitions. [2022-12-13 21:11:20,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.413133097762073 [2022-12-13 21:11:20,565 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1403 transitions. [2022-12-13 21:11:20,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1403 transitions. [2022-12-13 21:11:20,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:11:20,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1403 transitions. [2022-12-13 21:11:20,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 350.75) internal successors, (1403), 4 states have internal predecessors, (1403), 0 states have call successors, (0), 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 21:11:20,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 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 21:11:20,576 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 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 21:11:20,576 INFO L175 Difference]: Start difference. First operand has 101 places, 118 transitions, 652 flow. Second operand 4 states and 1403 transitions. [2022-12-13 21:11:20,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 868 flow [2022-12-13 21:11:20,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 114 transitions, 867 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:11:20,605 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 661 flow [2022-12-13 21:11:20,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=661, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2022-12-13 21:11:20,606 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2022-12-13 21:11:20,606 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 661 flow [2022-12-13 21:11:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 338.25) internal successors, (1353), 4 states have internal predecessors, (1353), 0 states have call successors, (0), 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 21:11:20,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:11:20,607 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:11:20,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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)] Forceful destruction successful, exit code 0 [2022-12-13 21:11:20,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:11:20,808 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:11:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:11:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1584945904, now seen corresponding path program 1 times [2022-12-13 21:11:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:11:20,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039599595] [2022-12-13 21:11:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:11:20,813 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 21:11:20,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:11:20,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:11:20,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:11:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:11:21,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 21:11:21,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:11:21,092 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 21:11:21,092 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 21:11:21,180 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 21:11:21,180 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 21:11:21,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:11:21,273 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 21:11:21,300 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 21:11:21,300 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 21:11:21,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:11:21,348 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 21:11:21,361 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:11:21,362 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 21:11:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:11:21,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:11:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:11:24,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:11:24,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039599595] [2022-12-13 21:11:24,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039599595] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:11:24,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:11:24,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 21:11:24,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844984081] [2022-12-13 21:11:24,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:11:24,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:11:24,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:11:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:11:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:11:26,970 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 21:11:29,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:11:32,575 WARN L539 Checker$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 21:11:35,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:11:39,281 WARN L539 Checker$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 21:11:41,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:11:43,963 WARN L539 Checker$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 21:11:47,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:11:50,866 WARN L539 Checker$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 21:11:54,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:11:58,146 WARN L539 Checker$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 21:12:00,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:12:03,980 WARN L539 Checker$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 21:12:03,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 849 [2022-12-13 21:12:03,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 661 flow. Second operand has 12 states, 12 states have (on average 284.5) internal successors, (3414), 12 states have internal predecessors, (3414), 0 states have call successors, (0), 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 21:12:03,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:12:03,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 849 [2022-12-13 21:12:03,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:12:10,094 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 43 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:12:20,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:12:27,466 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 55 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:12:29,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 21:12:47,395 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 66 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:13:01,222 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 66 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:13:52,718 INFO L130 PetriNetUnfolder]: 282280/401344 cut-off events. [2022-12-13 21:13:52,718 INFO L131 PetriNetUnfolder]: For 101612/101612 co-relation queries the response was YES. [2022-12-13 21:13:54,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900724 conditions, 401344 events. 282280/401344 cut-off events. For 101612/101612 co-relation queries the response was YES. Maximal size of possible extension queue 10723. Compared 3252297 event pairs, 100560 based on Foata normal form. 0/220404 useless extension candidates. Maximal degree in co-relation 900692. Up to 77970 conditions per place. [2022-12-13 21:13:55,383 INFO L137 encePairwiseOnDemand]: 830/849 looper letters, 1058 selfloop transitions, 150 changer transitions 0/1208 dead transitions. [2022-12-13 21:13:55,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 1208 transitions, 6269 flow [2022-12-13 21:13:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 21:13:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 21:13:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 11081 transitions. [2022-12-13 21:13:55,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3729093050647821 [2022-12-13 21:13:55,400 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 11081 transitions. [2022-12-13 21:13:55,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 11081 transitions. [2022-12-13 21:13:55,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:13:55,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 11081 transitions. [2022-12-13 21:13:55,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 316.6) internal successors, (11081), 35 states have internal predecessors, (11081), 0 states have call successors, (0), 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 21:13:55,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 849.0) internal successors, (30564), 36 states have internal predecessors, (30564), 0 states have call successors, (0), 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 21:13:55,433 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 849.0) internal successors, (30564), 36 states have internal predecessors, (30564), 0 states have call successors, (0), 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 21:13:55,433 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 661 flow. Second operand 35 states and 11081 transitions. [2022-12-13 21:13:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 1208 transitions, 6269 flow [2022-12-13 21:13:56,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 1208 transitions, 6237 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:13:56,018 INFO L231 Difference]: Finished difference. Result has 150 places, 240 transitions, 2074 flow [2022-12-13 21:13:56,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2074, PETRI_PLACES=150, PETRI_TRANSITIONS=240} [2022-12-13 21:13:56,018 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 69 predicate places. [2022-12-13 21:13:56,018 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 240 transitions, 2074 flow [2022-12-13 21:13:56,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 284.5) internal successors, (3414), 12 states have internal predecessors, (3414), 0 states have call successors, (0), 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 21:13:56,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:13:56,019 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:56,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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)] Forceful destruction successful, exit code 0 [2022-12-13 21:13:56,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:13:56,220 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2022-12-13 21:13:56,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1584945987, now seen corresponding path program 1 times [2022-12-13 21:13:56,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:56,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620476330] [2022-12-13 21:13:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:56,223 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 21:13:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:56,227 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:13:56,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddb7350c-8a8d-4152-adcb-b4f83813e268/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 21:13:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:56,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:13:56,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:56,445 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 8 treesize of output 7 [2022-12-13 21:13:56,451 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 21:13:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:13:56,511 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 21:13:56,527 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:13:56,527 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 21:13:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:13:56,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:14:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:14:01,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620476330] [2022-12-13 21:14:01,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620476330] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:14:01,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:14:01,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 21:14:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106661396] [2022-12-13 21:14:01,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:14:01,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:14:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:14:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:14:07,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 849 [2022-12-13 21:14:07,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 240 transitions, 2074 flow. Second operand has 10 states, 10 states have (on average 318.6) internal successors, (3186), 10 states have internal predecessors, (3186), 0 states have call successors, (0), 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 21:14:07,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:14:07,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 849 [2022-12-13 21:14:07,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand