./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/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_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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 11:40:04,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:40:04,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:40:04,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:40:04,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:40:04,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:40:04,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:40:04,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:40:04,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:40:04,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:40:04,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:40:04,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:40:04,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:40:04,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:40:04,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:40:04,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:40:04,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:40:04,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:40:04,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:40:04,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:40:04,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:40:04,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:40:04,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:40:04,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:40:04,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:40:04,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:40:04,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:40:04,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:40:04,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:40:04,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:40:04,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:40:04,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:40:04,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:40:04,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:40:04,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:40:04,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:40:04,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:40:04,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:40:04,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:40:04,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:40:04,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:40:04,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 11:40:05,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:40:05,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:40:05,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:40:05,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:40:05,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:40:05,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:40:05,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:40:05,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:40:05,005 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:40:05,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:40:05,005 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:40:05,005 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:40:05,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:40:05,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:40:05,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:40:05,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:40:05,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:40:05,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:40:05,006 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:40:05,007 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:40:05,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:40:05,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:40:05,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:40:05,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:40:05,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:40:05,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:40:05,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:40:05,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:40:05,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:40:05,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:40:05,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:40:05,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:40:05,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:40:05,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:40:05,010 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:40:05,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:40:05,010 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:40:05,010 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_a1ae76f6-3c99-45b6-953a-a0004025cba7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-12-13 11:40:05,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:40:05,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:40:05,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:40:05,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:40:05,219 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:40:05,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-12-13 11:40:07,825 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:40:07,957 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:40:07,957 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-12-13 11:40:07,962 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/data/c9fad5950/2eedd64cf9d149189f4222ceb5ba6f5a/FLAG7acbd87a9 [2022-12-13 11:40:07,973 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/data/c9fad5950/2eedd64cf9d149189f4222ceb5ba6f5a [2022-12-13 11:40:07,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:40:07,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:40:07,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:07,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:40:07,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:40:07,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:07" (1/1) ... [2022-12-13 11:40:07,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7ce4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:07, skipping insertion in model container [2022-12-13 11:40:07,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:07" (1/1) ... [2022-12-13 11:40:07,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:40:08,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:40:08,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,127 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_a1ae76f6-3c99-45b6-953a-a0004025cba7/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-12-13 11:40:08,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:08,139 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:40:08,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:40:08,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:40:08,160 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_a1ae76f6-3c99-45b6-953a-a0004025cba7/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-12-13 11:40:08,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:08,174 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:40:08,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08 WrapperNode [2022-12-13 11:40:08,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:08,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:08,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:40:08,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:40:08,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,204 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2022-12-13 11:40:08,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:08,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:40:08,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:40:08,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:40:08,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:40:08,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:40:08,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:40:08,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:40:08,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (1/1) ... [2022-12-13 11:40:08,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:40:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:08,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:40:08,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:40:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:40:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:40:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:40:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:40:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:40:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:40:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:40:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:40:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:40:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:40:08,285 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 11:40:08,365 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:40:08,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:40:08,623 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:40:08,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:40:08,672 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 11:40:08,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:08 BoogieIcfgContainer [2022-12-13 11:40:08,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:40:08,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:40:08,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:40:08,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:40:08,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:40:07" (1/3) ... [2022-12-13 11:40:08,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dfe80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:08, skipping insertion in model container [2022-12-13 11:40:08,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:08" (2/3) ... [2022-12-13 11:40:08,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dfe80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:08, skipping insertion in model container [2022-12-13 11:40:08,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:08" (3/3) ... [2022-12-13 11:40:08,685 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-12-13 11:40:08,692 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:40:08,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:40:08,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 11:40:08,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:40:08,751 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:40:08,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 398 flow [2022-12-13 11:40:08,829 INFO L130 PetriNetUnfolder]: 12/184 cut-off events. [2022-12-13 11:40:08,830 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:40:08,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 12/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-12-13 11:40:08,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 187 transitions, 398 flow [2022-12-13 11:40:08,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 160 transitions, 332 flow [2022-12-13 11:40:08,841 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:40:08,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 160 transitions, 332 flow [2022-12-13 11:40:08,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 160 transitions, 332 flow [2022-12-13 11:40:08,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 160 transitions, 332 flow [2022-12-13 11:40:08,878 INFO L130 PetriNetUnfolder]: 11/160 cut-off events. [2022-12-13 11:40:08,878 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:40:08,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 160 events. 11/160 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-12-13 11:40:08,880 INFO L119 LiptonReduction]: Number of co-enabled transitions 1604 [2022-12-13 11:40:13,760 INFO L134 LiptonReduction]: Checked pairs total: 2282 [2022-12-13 11:40:13,760 INFO L136 LiptonReduction]: Total number of compositions: 170 [2022-12-13 11:40:13,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:40:13,780 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7b9e6bc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:40:13,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 11:40:13,783 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 11:40:13,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:40:13,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:13,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:40:13,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash 22896, now seen corresponding path program 1 times [2022-12-13 11:40:13,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:13,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505345165] [2022-12-13 11:40:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:13,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:13,989 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 11:40:13,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:13,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505345165] [2022-12-13 11:40:13,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505345165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:13,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:13,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:40:13,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56034215] [2022-12-13 11:40:13,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:14,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:14,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 357 [2022-12-13 11:40:14,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 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 11:40:14,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:14,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 357 [2022-12-13 11:40:14,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:14,271 INFO L130 PetriNetUnfolder]: 963/1473 cut-off events. [2022-12-13 11:40:14,271 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-12-13 11:40:14,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 1473 events. 963/1473 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6096 event pairs, 806 based on Foata normal form. 0/1001 useless extension candidates. Maximal degree in co-relation 1428. Up to 739 conditions per place. [2022-12-13 11:40:14,279 INFO L137 encePairwiseOnDemand]: 353/357 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2022-12-13 11:40:14,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 220 flow [2022-12-13 11:40:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-12-13 11:40:14,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2022-12-13 11:40:14,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-12-13 11:40:14,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-12-13 11:40:14,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:14,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-12-13 11:40:14,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:40:14,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:14,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:14,302 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 64 flow. Second operand 3 states and 546 transitions. [2022-12-13 11:40:14,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 220 flow [2022-12-13 11:40:14,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:40:14,307 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 72 flow [2022-12-13 11:40:14,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2022-12-13 11:40:14,311 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-13 11:40:14,311 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 72 flow [2022-12-13 11:40:14,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 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 11:40:14,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:14,312 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:40:14,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:40:14,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash 711375, now seen corresponding path program 1 times [2022-12-13 11:40:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:14,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742578519] [2022-12-13 11:40:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:14,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:40:14,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:14,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742578519] [2022-12-13 11:40:14,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742578519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:14,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:14,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:40:14,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603788367] [2022-12-13 11:40:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:14,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:14,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:14,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 357 [2022-12-13 11:40:14,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 11:40:14,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:14,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 357 [2022-12-13 11:40:14,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:14,526 INFO L130 PetriNetUnfolder]: 963/1472 cut-off events. [2022-12-13 11:40:14,526 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 11:40:14,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 1472 events. 963/1472 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6094 event pairs, 806 based on Foata normal form. 0/1003 useless extension candidates. Maximal degree in co-relation 1559. Up to 1472 conditions per place. [2022-12-13 11:40:14,531 INFO L137 encePairwiseOnDemand]: 355/357 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2022-12-13 11:40:14,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 120 flow [2022-12-13 11:40:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 11:40:14,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4864612511671335 [2022-12-13 11:40:14,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 11:40:14,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 11:40:14,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:14,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 11:40:14,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 11:40:14,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:14,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:14,537 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 72 flow. Second operand 3 states and 521 transitions. [2022-12-13 11:40:14,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 120 flow [2022-12-13 11:40:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:40:14,538 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 68 flow [2022-12-13 11:40:14,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-13 11:40:14,539 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-12-13 11:40:14,539 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 68 flow [2022-12-13 11:40:14,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 11:40:14,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:14,539 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:40:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:40:14,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash 711405, now seen corresponding path program 1 times [2022-12-13 11:40:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:14,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105521486] [2022-12-13 11:40:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:14,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:14,597 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 11:40:14,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:14,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105521486] [2022-12-13 11:40:14,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105521486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:14,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339940655] [2022-12-13 11:40:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:14,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:14,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:14,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:14,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:40:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:14,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:40:14,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:14,694 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 11:40:14,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:40:14,708 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 11:40:14,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339940655] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:40:14,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:40:14,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 11:40:14,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432031118] [2022-12-13 11:40:14,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:40:14,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:40:14,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:40:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:40:14,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 357 [2022-12-13 11:40:14,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 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 11:40:14,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:14,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 357 [2022-12-13 11:40:14,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:15,175 INFO L130 PetriNetUnfolder]: 2406/3677 cut-off events. [2022-12-13 11:40:15,175 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 11:40:15,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7791 conditions, 3677 events. 2406/3677 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18061 event pairs, 2015 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 7783. Up to 738 conditions per place. [2022-12-13 11:40:15,195 INFO L137 encePairwiseOnDemand]: 354/357 looper letters, 112 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2022-12-13 11:40:15,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 117 transitions, 514 flow [2022-12-13 11:40:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:40:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:40:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1110 transitions. [2022-12-13 11:40:15,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5182072829131653 [2022-12-13 11:40:15,199 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1110 transitions. [2022-12-13 11:40:15,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1110 transitions. [2022-12-13 11:40:15,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:15,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1110 transitions. [2022-12-13 11:40:15,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 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 11:40:15,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 357.0) internal successors, (2499), 7 states have internal predecessors, (2499), 0 states have call successors, (0), 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 11:40:15,208 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 357.0) internal successors, (2499), 7 states have internal predecessors, (2499), 0 states have call successors, (0), 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 11:40:15,209 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 68 flow. Second operand 6 states and 1110 transitions. [2022-12-13 11:40:15,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 117 transitions, 514 flow [2022-12-13 11:40:15,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 117 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:40:15,211 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 103 flow [2022-12-13 11:40:15,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2022-12-13 11:40:15,212 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2022-12-13 11:40:15,212 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 103 flow [2022-12-13 11:40:15,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 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 11:40:15,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:15,213 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:40:15,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:40:15,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 11:40:15,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:15,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:15,414 INFO L85 PathProgramCache]: Analyzing trace with hash -280676018, now seen corresponding path program 2 times [2022-12-13 11:40:15,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:15,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410189756] [2022-12-13 11:40:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:15,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:15,545 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 11:40:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410189756] [2022-12-13 11:40:15,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410189756] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707889587] [2022-12-13 11:40:15,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:40:15,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:15,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:15,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:40:15,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:40:15,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:40:15,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:40:15,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 11:40:15,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:40:15,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707889587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:15,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:40:15,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 11:40:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560454204] [2022-12-13 11:40:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:15,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:15,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:15,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:40:15,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 357 [2022-12-13 11:40:15,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 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 11:40:15,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:15,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 357 [2022-12-13 11:40:15,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:15,883 INFO L130 PetriNetUnfolder]: 2406/3676 cut-off events. [2022-12-13 11:40:15,884 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-13 11:40:15,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7800 conditions, 3676 events. 2406/3676 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18246 event pairs, 2015 based on Foata normal form. 1/2507 useless extension candidates. Maximal degree in co-relation 7788. Up to 3676 conditions per place. [2022-12-13 11:40:15,897 INFO L137 encePairwiseOnDemand]: 355/357 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 11:40:15,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 149 flow [2022-12-13 11:40:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-12-13 11:40:15,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.488328664799253 [2022-12-13 11:40:15,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-12-13 11:40:15,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-12-13 11:40:15,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:15,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-12-13 11:40:15,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 11:40:15,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:15,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:15,902 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 103 flow. Second operand 3 states and 523 transitions. [2022-12-13 11:40:15,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 149 flow [2022-12-13 11:40:15,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 131 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 11:40:15,902 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 77 flow [2022-12-13 11:40:15,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-12-13 11:40:15,903 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2022-12-13 11:40:15,903 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 77 flow [2022-12-13 11:40:15,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 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 11:40:15,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:15,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:40:15,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:40:16,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:16,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash -275325057, now seen corresponding path program 1 times [2022-12-13 11:40:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:16,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250796249] [2022-12-13 11:40:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:16,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:16,156 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 11:40:16,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250796249] [2022-12-13 11:40:16,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250796249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:16,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:16,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:40:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980856144] [2022-12-13 11:40:16,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:16,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:16,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:16,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 357 [2022-12-13 11:40:16,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 11:40:16,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:16,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 357 [2022-12-13 11:40:16,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:16,607 INFO L130 PetriNetUnfolder]: 3326/5096 cut-off events. [2022-12-13 11:40:16,607 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 11:40:16,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10769 conditions, 5096 events. 3326/5096 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 27678 event pairs, 2015 based on Foata normal form. 0/3496 useless extension candidates. Maximal degree in co-relation 10760. Up to 3677 conditions per place. [2022-12-13 11:40:16,626 INFO L137 encePairwiseOnDemand]: 353/357 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 11:40:16,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 202 flow [2022-12-13 11:40:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-12-13 11:40:16,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2022-12-13 11:40:16,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-12-13 11:40:16,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-12-13 11:40:16,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:16,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-12-13 11:40:16,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 11:40:16,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:16,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:16,631 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 77 flow. Second operand 3 states and 540 transitions. [2022-12-13 11:40:16,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 202 flow [2022-12-13 11:40:16,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:40:16,633 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 90 flow [2022-12-13 11:40:16,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2022-12-13 11:40:16,633 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2022-12-13 11:40:16,633 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 90 flow [2022-12-13 11:40:16,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 11:40:16,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:16,634 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:16,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:40:16,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:16,634 INFO L85 PathProgramCache]: Analyzing trace with hash 54858451, now seen corresponding path program 1 times [2022-12-13 11:40:16,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:16,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015718465] [2022-12-13 11:40:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:16,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:40:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:16,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015718465] [2022-12-13 11:40:16,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015718465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:16,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:16,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:40:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887768308] [2022-12-13 11:40:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:16,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:16,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:16,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 357 [2022-12-13 11:40:16,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 11:40:16,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:16,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 357 [2022-12-13 11:40:16,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:16,993 INFO L130 PetriNetUnfolder]: 2956/4536 cut-off events. [2022-12-13 11:40:16,994 INFO L131 PetriNetUnfolder]: For 560/560 co-relation queries the response was YES. [2022-12-13 11:40:16,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10530 conditions, 4536 events. 2956/4536 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 25259 event pairs, 495 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 10520. Up to 3590 conditions per place. [2022-12-13 11:40:17,009 INFO L137 encePairwiseOnDemand]: 355/357 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-12-13 11:40:17,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 194 flow [2022-12-13 11:40:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2022-12-13 11:40:17,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2022-12-13 11:40:17,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2022-12-13 11:40:17,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2022-12-13 11:40:17,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:17,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2022-12-13 11:40:17,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 11:40:17,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:17,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:17,016 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 90 flow. Second operand 3 states and 534 transitions. [2022-12-13 11:40:17,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 194 flow [2022-12-13 11:40:17,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:40:17,018 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 86 flow [2022-12-13 11:40:17,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2022-12-13 11:40:17,019 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2022-12-13 11:40:17,019 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 86 flow [2022-12-13 11:40:17,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 11:40:17,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:17,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:40:17,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash 54858452, now seen corresponding path program 1 times [2022-12-13 11:40:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:17,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284152279] [2022-12-13 11:40:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:17,073 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 11:40:17,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:17,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284152279] [2022-12-13 11:40:17,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284152279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:17,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508593499] [2022-12-13 11:40:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:17,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:17,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:17,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:17,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:40:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:17,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:40:17,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:17,150 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 11:40:17,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:40:17,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508593499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:17,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:40:17,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 11:40:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309271764] [2022-12-13 11:40:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:17,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:40:17,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 357 [2022-12-13 11:40:17,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:40:17,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:17,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 357 [2022-12-13 11:40:17,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:17,470 INFO L130 PetriNetUnfolder]: 2365/3630 cut-off events. [2022-12-13 11:40:17,470 INFO L131 PetriNetUnfolder]: For 780/780 co-relation queries the response was YES. [2022-12-13 11:40:17,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8429 conditions, 3630 events. 2365/3630 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18059 event pairs, 2012 based on Foata normal form. 1/2879 useless extension candidates. Maximal degree in co-relation 8419. Up to 3630 conditions per place. [2022-12-13 11:40:17,479 INFO L137 encePairwiseOnDemand]: 354/357 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2022-12-13 11:40:17,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 142 flow [2022-12-13 11:40:17,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-12-13 11:40:17,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4827264239028945 [2022-12-13 11:40:17,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-12-13 11:40:17,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-12-13 11:40:17,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:17,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-12-13 11:40:17,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 11:40:17,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:17,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:17,484 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 86 flow. Second operand 3 states and 517 transitions. [2022-12-13 11:40:17,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 142 flow [2022-12-13 11:40:17,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 11:40:17,485 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 91 flow [2022-12-13 11:40:17,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2022-12-13 11:40:17,486 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2022-12-13 11:40:17,486 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 91 flow [2022-12-13 11:40:17,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:40:17,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:17,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:17,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 11:40:17,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:17,687 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:17,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1019188437, now seen corresponding path program 1 times [2022-12-13 11:40:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:17,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946186986] [2022-12-13 11:40:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:17,819 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 11:40:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:17,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946186986] [2022-12-13 11:40:17,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946186986] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:17,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555224434] [2022-12-13 11:40:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:17,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:17,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:17,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:17,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:40:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:17,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:40:17,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:40:17,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:40:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:40:17,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555224434] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:40:17,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:40:17,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-12-13 11:40:17,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107547421] [2022-12-13 11:40:17,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:40:17,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:40:17,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:40:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:40:18,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 357 [2022-12-13 11:40:18,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 91 flow. Second operand has 13 states, 13 states have (on average 157.69230769230768) internal successors, (2050), 13 states have internal predecessors, (2050), 0 states have call successors, (0), 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 11:40:18,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:18,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 357 [2022-12-13 11:40:18,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:18,744 INFO L130 PetriNetUnfolder]: 2667/4150 cut-off events. [2022-12-13 11:40:18,744 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2022-12-13 11:40:18,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9554 conditions, 4150 events. 2667/4150 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22653 event pairs, 786 based on Foata normal form. 32/3446 useless extension candidates. Maximal degree in co-relation 9542. Up to 1355 conditions per place. [2022-12-13 11:40:18,754 INFO L137 encePairwiseOnDemand]: 349/357 looper letters, 128 selfloop transitions, 13 changer transitions 7/148 dead transitions. [2022-12-13 11:40:18,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 148 transitions, 677 flow [2022-12-13 11:40:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:40:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 11:40:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2183 transitions. [2022-12-13 11:40:18,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47037276449041154 [2022-12-13 11:40:18,757 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2183 transitions. [2022-12-13 11:40:18,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2183 transitions. [2022-12-13 11:40:18,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:18,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2183 transitions. [2022-12-13 11:40:18,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.92307692307693) internal successors, (2183), 13 states have internal predecessors, (2183), 0 states have call successors, (0), 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 11:40:18,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 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 11:40:18,765 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 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 11:40:18,765 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 91 flow. Second operand 13 states and 2183 transitions. [2022-12-13 11:40:18,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 148 transitions, 677 flow [2022-12-13 11:40:18,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 148 transitions, 673 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:40:18,767 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 177 flow [2022-12-13 11:40:18,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2022-12-13 11:40:18,767 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2022-12-13 11:40:18,767 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 177 flow [2022-12-13 11:40:18,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.69230769230768) internal successors, (2050), 13 states have internal predecessors, (2050), 0 states have call successors, (0), 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 11:40:18,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:18,768 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:18,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:40:18,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:18,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1682975287, now seen corresponding path program 1 times [2022-12-13 11:40:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:18,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287673557] [2022-12-13 11:40:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:19,005 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 11:40:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:19,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287673557] [2022-12-13 11:40:19,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287673557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:19,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:19,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:40:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094071379] [2022-12-13 11:40:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:19,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:19,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:19,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 357 [2022-12-13 11:40:19,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 11:40:19,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:19,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 357 [2022-12-13 11:40:19,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:19,465 INFO L130 PetriNetUnfolder]: 3579/5546 cut-off events. [2022-12-13 11:40:19,466 INFO L131 PetriNetUnfolder]: For 8715/8715 co-relation queries the response was YES. [2022-12-13 11:40:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 5546 events. 3579/5546 cut-off events. For 8715/8715 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30962 event pairs, 2310 based on Foata normal form. 138/4808 useless extension candidates. Maximal degree in co-relation 15661. Up to 4151 conditions per place. [2022-12-13 11:40:19,483 INFO L137 encePairwiseOnDemand]: 353/357 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-12-13 11:40:19,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 391 flow [2022-12-13 11:40:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2022-12-13 11:40:19,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5004668534080299 [2022-12-13 11:40:19,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2022-12-13 11:40:19,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2022-12-13 11:40:19,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:19,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2022-12-13 11:40:19,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 11:40:19,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:19,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:19,486 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 177 flow. Second operand 3 states and 536 transitions. [2022-12-13 11:40:19,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 391 flow [2022-12-13 11:40:19,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 359 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 11:40:19,492 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 171 flow [2022-12-13 11:40:19,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2022-12-13 11:40:19,493 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2022-12-13 11:40:19,493 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 171 flow [2022-12-13 11:40:19,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 11:40:19,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:19,493 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:19,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:40:19,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash 538250720, now seen corresponding path program 2 times [2022-12-13 11:40:19,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:19,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816263947] [2022-12-13 11:40:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:19,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:40:19,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:19,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816263947] [2022-12-13 11:40:19,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816263947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:19,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380429815] [2022-12-13 11:40:19,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:40:19,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:19,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:19,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:19,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:40:19,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:40:19,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:40:19,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:40:19,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:40:19,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:40:19,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380429815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:19,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:40:19,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-13 11:40:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227949337] [2022-12-13 11:40:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:19,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:40:19,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 357 [2022-12-13 11:40:19,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 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 11:40:19,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:19,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 357 [2022-12-13 11:40:19,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:19,953 INFO L130 PetriNetUnfolder]: 3003/4640 cut-off events. [2022-12-13 11:40:19,953 INFO L131 PetriNetUnfolder]: For 6322/6322 co-relation queries the response was YES. [2022-12-13 11:40:19,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12721 conditions, 4640 events. 3003/4640 cut-off events. For 6322/6322 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24191 event pairs, 2646 based on Foata normal form. 120/4536 useless extension candidates. Maximal degree in co-relation 12700. Up to 4640 conditions per place. [2022-12-13 11:40:19,964 INFO L137 encePairwiseOnDemand]: 354/357 looper letters, 33 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2022-12-13 11:40:19,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 35 transitions, 217 flow [2022-12-13 11:40:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 11:40:19,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4864612511671335 [2022-12-13 11:40:19,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 11:40:19,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 11:40:19,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:19,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 11:40:19,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 11:40:19,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:19,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 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 11:40:19,968 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 171 flow. Second operand 3 states and 521 transitions. [2022-12-13 11:40:19,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 35 transitions, 217 flow [2022-12-13 11:40:19,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 35 transitions, 207 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 11:40:19,974 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 137 flow [2022-12-13 11:40:19,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2022-12-13 11:40:19,975 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2022-12-13 11:40:19,975 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 137 flow [2022-12-13 11:40:19,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 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 11:40:19,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:19,975 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:19,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:40:20,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 11:40:20,176 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 11:40:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 632628338, now seen corresponding path program 1 times [2022-12-13 11:40:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:20,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599275191] [2022-12-13 11:40:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:20,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:20,214 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 11:40:20,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:20,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599275191] [2022-12-13 11:40:20,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599275191] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:20,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881261506] [2022-12-13 11:40:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:20,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:20,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:20,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:40:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:20,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:40:20,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:40:20,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:40:20,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881261506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:20,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:40:20,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 11:40:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317137876] [2022-12-13 11:40:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:20,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:40:20,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:40:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:40:20,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 357 [2022-12-13 11:40:20,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 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 11:40:20,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:20,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 357 [2022-12-13 11:40:20,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:20,553 INFO L130 PetriNetUnfolder]: 1743/2708 cut-off events. [2022-12-13 11:40:20,553 INFO L131 PetriNetUnfolder]: For 1296/1296 co-relation queries the response was YES. [2022-12-13 11:40:20,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 2708 events. 1743/2708 cut-off events. For 1296/1296 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13427 event pairs, 636 based on Foata normal form. 0/2708 useless extension candidates. Maximal degree in co-relation 7392. Up to 1197 conditions per place. [2022-12-13 11:40:20,557 INFO L137 encePairwiseOnDemand]: 354/357 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2022-12-13 11:40:20,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 409 flow [2022-12-13 11:40:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:40:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:40:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2022-12-13 11:40:20,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49369747899159666 [2022-12-13 11:40:20,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2022-12-13 11:40:20,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2022-12-13 11:40:20,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:20,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2022-12-13 11:40:20,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 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 11:40:20,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 0 states have call successors, (0), 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 11:40:20,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 0 states have call successors, (0), 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 11:40:20,565 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 137 flow. Second operand 4 states and 705 transitions. [2022-12-13 11:40:20,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 409 flow [2022-12-13 11:40:20,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 406 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 11:40:20,568 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2022-12-13 11:40:20,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2022-12-13 11:40:20,568 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2022-12-13 11:40:20,568 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2022-12-13 11:40:20,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 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 11:40:20,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-12-13 11:40:20,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 11:40:20,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 11:40:20,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 11:40:20,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 11:40:20,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 11:40:20,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:40:20,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:20,774 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:20,787 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:40:20,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:40:20,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:40:20 BasicIcfg [2022-12-13 11:40:20,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:40:20,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:40:20,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:40:20,800 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:40:20,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:08" (3/4) ... [2022-12-13 11:40:20,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:40:20,824 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 11:40:20,824 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 11:40:20,824 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 11:40:20,840 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-12-13 11:40:20,841 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:40:20,842 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 11:40:20,842 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:40:20,896 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:40:20,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:40:20,897 INFO L158 Benchmark]: Toolchain (without parser) took 12920.75ms. Allocated memory was 119.5MB in the beginning and 371.2MB in the end (delta: 251.7MB). Free memory was 85.0MB in the beginning and 201.4MB in the end (delta: -116.4MB). Peak memory consumption was 136.3MB. Max. memory is 16.1GB. [2022-12-13 11:40:20,897 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 95.4MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:40:20,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.62ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 71.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:40:20,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.79ms. Allocated memory is still 119.5MB. Free memory was 71.7MB in the beginning and 69.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:40:20,898 INFO L158 Benchmark]: Boogie Preprocessor took 21.40ms. Allocated memory is still 119.5MB. Free memory was 69.6MB in the beginning and 68.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:40:20,898 INFO L158 Benchmark]: RCFGBuilder took 446.82ms. Allocated memory was 119.5MB in the beginning and 176.2MB in the end (delta: 56.6MB). Free memory was 67.9MB in the beginning and 145.7MB in the end (delta: -77.8MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2022-12-13 11:40:20,898 INFO L158 Benchmark]: TraceAbstraction took 12117.63ms. Allocated memory was 176.2MB in the beginning and 371.2MB in the end (delta: 195.0MB). Free memory was 146.2MB in the beginning and 204.6MB in the end (delta: -58.3MB). Peak memory consumption was 258.3MB. Max. memory is 16.1GB. [2022-12-13 11:40:20,898 INFO L158 Benchmark]: Witness Printer took 96.69ms. Allocated memory is still 371.2MB. Free memory was 204.6MB in the beginning and 201.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:40:20,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 95.4MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.62ms. Allocated memory is still 119.5MB. Free memory was 85.0MB in the beginning and 71.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.79ms. Allocated memory is still 119.5MB. Free memory was 71.7MB in the beginning and 69.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.40ms. Allocated memory is still 119.5MB. Free memory was 69.6MB in the beginning and 68.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.82ms. Allocated memory was 119.5MB in the beginning and 176.2MB in the end (delta: 56.6MB). Free memory was 67.9MB in the beginning and 145.7MB in the end (delta: -77.8MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12117.63ms. Allocated memory was 176.2MB in the beginning and 371.2MB in the end (delta: 195.0MB). Free memory was 146.2MB in the beginning and 204.6MB in the end (delta: -58.3MB). Peak memory consumption was 258.3MB. Max. memory is 16.1GB. * Witness Printer took 96.69ms. Allocated memory is still 371.2MB. Free memory was 204.6MB in the beginning and 201.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 159 PlacesBefore, 33 PlacesAfterwards, 160 TransitionsBefore, 26 TransitionsAfterwards, 1604 CoEnabledTransitionPairs, 8 FixpointIterations, 102 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 170 TotalNumberOfCompositions, 2282 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1750, independent: 1689, independent conditional: 0, independent unconditional: 1689, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 850, independent: 830, independent conditional: 0, independent unconditional: 830, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1750, independent: 859, independent conditional: 0, independent unconditional: 859, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 850, unknown conditional: 0, unknown unconditional: 850] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 213 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.0s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 957 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 812 mSDsluCounter, 147 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1464 IncrementalHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 24 mSDtfsCounter, 1464 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=8, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 115 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 9 NumberOfNonLiveVariables, 811 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 29/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 11:40:20,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ae76f6-3c99-45b6-953a-a0004025cba7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE