./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8 --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 c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- 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-e04fb08 [2022-11-16 12:42:44,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:42:44,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:42:44,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:42:44,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:42:44,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:42:45,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:42:45,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:42:45,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:42:45,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:42:45,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:42:45,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:42:45,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:42:45,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:42:45,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:42:45,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:42:45,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:42:45,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:42:45,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:42:45,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:42:45,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:42:45,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:42:45,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:42:45,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:42:45,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:42:45,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:42:45,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:42:45,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:42:45,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:42:45,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:42:45,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:42:45,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:42:45,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:42:45,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:42:45,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:42:45,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:42:45,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:42:45,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:42:45,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:42:45,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:42:45,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:42:45,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:42:45,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:42:45,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:42:45,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:42:45,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:42:45,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:42:45,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:42:45,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:42:45,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:42:45,131 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:42:45,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:42:45,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:42:45,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:42:45,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:42:45,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:42:45,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:42:45,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:42:45,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:42:45,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:42:45,133 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:42:45,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:42:45,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:42:45,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:42:45,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:42:45,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:42:45,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:42:45,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:42:45,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:45,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:42:45,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:42:45,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:42:45,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:42:45,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:42:45,137 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:42:45,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:42:45,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:42:45,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-11-16 12:42:45,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:42:45,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:42:45,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:42:45,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:42:45,554 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:42:45,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-16 12:42:45,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/data/ab9bcef4e/ae1712dab3d041fbbdf33dfd1b6a95f4/FLAG66ca87722 [2022-11-16 12:42:46,140 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:42:46,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-16 12:42:46,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/data/ab9bcef4e/ae1712dab3d041fbbdf33dfd1b6a95f4/FLAG66ca87722 [2022-11-16 12:42:46,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/data/ab9bcef4e/ae1712dab3d041fbbdf33dfd1b6a95f4 [2022-11-16 12:42:46,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:42:46,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:42:46,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:46,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:42:46,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:42:46,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcb17ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46, skipping insertion in model container [2022-11-16 12:42:46,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:42:46,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:42:46,751 WARN L229 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_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-16 12:42:46,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:46,764 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:42:46,790 WARN L229 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_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-16 12:42:46,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:46,808 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:42:46,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46 WrapperNode [2022-11-16 12:42:46,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:46,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:46,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:42:46,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:42:46,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,852 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 166 [2022-11-16 12:42:46,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:46,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:42:46,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:42:46,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:42:46,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:42:46,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:42:46,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:42:46,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:42:46,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (1/1) ... [2022-11-16 12:42:46,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:46,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:46,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:42:46,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:42:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:42:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:42:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:42:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:42:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:42:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:42:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:42:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:42:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:42:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:42:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:42:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:42:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:42:46,981 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:42:47,100 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:42:47,102 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:42:47,622 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:42:47,633 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:42:47,633 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:42:47,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:47 BoogieIcfgContainer [2022-11-16 12:42:47,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:42:47,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:42:47,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:42:47,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:42:47,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:42:46" (1/3) ... [2022-11-16 12:42:47,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7beb1924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:47, skipping insertion in model container [2022-11-16 12:42:47,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:46" (2/3) ... [2022-11-16 12:42:47,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7beb1924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:47, skipping insertion in model container [2022-11-16 12:42:47,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:47" (3/3) ... [2022-11-16 12:42:47,646 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2022-11-16 12:42:47,655 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:42:47,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:42:47,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:42:47,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:42:47,868 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:42:47,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 216 transitions, 448 flow [2022-11-16 12:42:48,123 INFO L130 PetriNetUnfolder]: 17/214 cut-off events. [2022-11-16 12:42:48,124 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:42:48,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 17/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 184 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-11-16 12:42:48,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 216 transitions, 448 flow [2022-11-16 12:42:48,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-11-16 12:42:48,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:42:48,180 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;@73766825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:42:48,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:42:48,203 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-11-16 12:42:48,206 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:42:48,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:48,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:48,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:42:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 122219522, now seen corresponding path program 1 times [2022-11-16 12:42:48,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:48,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931131066] [2022-11-16 12:42:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:48,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931131066] [2022-11-16 12:42:48,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931131066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:48,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:48,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289050064] [2022-11-16 12:42:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:48,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:48,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:48,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:48,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 216 [2022-11-16 12:42:48,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:48,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:48,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 216 [2022-11-16 12:42:48,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:48,848 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-16 12:42:48,848 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:42:48,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-11-16 12:42:48,850 INFO L137 encePairwiseOnDemand]: 207/216 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-11-16 12:42:48,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-11-16 12:42:48,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 948 transitions. [2022-11-16 12:42:48,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777777777777778 [2022-11-16 12:42:48,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 948 transitions. [2022-11-16 12:42:48,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 948 transitions. [2022-11-16 12:42:48,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:48,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 948 transitions. [2022-11-16 12:42:48,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:48,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:48,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:48,896 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 948 transitions. [2022-11-16 12:42:48,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-11-16 12:42:48,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:42:48,902 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-11-16 12:42:48,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2022-11-16 12:42:48,908 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-11-16 12:42:48,909 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-11-16 12:42:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:48,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:48,910 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:42:48,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:42:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1326788563, now seen corresponding path program 1 times [2022-11-16 12:42:48,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:48,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109926965] [2022-11-16 12:42:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:48,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:49,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:49,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109926965] [2022-11-16 12:42:49,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109926965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:49,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718138119] [2022-11-16 12:42:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:49,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:49,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:49,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:49,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:42:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:49,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:42:49,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:49,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:49,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718138119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:49,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:49,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:42:49,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441715115] [2022-11-16 12:42:49,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:49,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:42:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:49,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:42:49,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:42:49,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 216 [2022-11-16 12:42:49,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 187.66666666666666) internal successors, (2252), 12 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:49,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:49,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 216 [2022-11-16 12:42:49,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:49,746 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-11-16 12:42:49,746 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-16 12:42:49,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 100 events. 1/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2022-11-16 12:42:49,748 INFO L137 encePairwiseOnDemand]: 209/216 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-11-16 12:42:49,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-11-16 12:42:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:42:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:42:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3374 transitions. [2022-11-16 12:42:49,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.867798353909465 [2022-11-16 12:42:49,762 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3374 transitions. [2022-11-16 12:42:49,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3374 transitions. [2022-11-16 12:42:49,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:49,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3374 transitions. [2022-11-16 12:42:49,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 187.44444444444446) internal successors, (3374), 18 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:49,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 216.0) internal successors, (4104), 19 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:49,790 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 216.0) internal successors, (4104), 19 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:49,790 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 3374 transitions. [2022-11-16 12:42:49,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-11-16 12:42:49,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:42:49,797 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-11-16 12:42:49,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=258, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-11-16 12:42:49,799 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-11-16 12:42:49,799 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-11-16 12:42:49,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 187.66666666666666) internal successors, (2252), 12 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:49,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:49,802 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:49,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:42:50,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 12:42:50,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:42:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1819227027, now seen corresponding path program 1 times [2022-11-16 12:42:50,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:50,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403006570] [2022-11-16 12:42:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:50,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403006570] [2022-11-16 12:42:50,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403006570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:50,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692848319] [2022-11-16 12:42:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:50,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:50,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:50,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:50,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:42:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:50,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:42:50,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:50,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:50,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692848319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:50,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:50,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:42:50,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60791065] [2022-11-16 12:42:50,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:50,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:42:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:50,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:42:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:42:50,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 216 [2022-11-16 12:42:50,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:50,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:50,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 216 [2022-11-16 12:42:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:50,501 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-11-16 12:42:50,501 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-16 12:42:50,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 96 events. 1/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 72. Up to 17 conditions per place. [2022-11-16 12:42:50,502 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-11-16 12:42:50,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-11-16 12:42:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:42:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:42:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1313 transitions. [2022-11-16 12:42:50,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683862433862434 [2022-11-16 12:42:50,506 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1313 transitions. [2022-11-16 12:42:50,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1313 transitions. [2022-11-16 12:42:50,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:50,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1313 transitions. [2022-11-16 12:42:50,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.57142857142858) internal successors, (1313), 7 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:50,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:50,515 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:50,515 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1313 transitions. [2022-11-16 12:42:50,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-11-16 12:42:50,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 261 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:42:50,519 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-11-16 12:42:50,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-11-16 12:42:50,520 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-11-16 12:42:50,521 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-11-16 12:42:50,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:50,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:50,522 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:50,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:50,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:42:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash 706599490, now seen corresponding path program 2 times [2022-11-16 12:42:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:50,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154550531] [2022-11-16 12:42:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:51,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154550531] [2022-11-16 12:42:51,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154550531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:51,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822608298] [2022-11-16 12:42:51,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:51,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:51,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:51,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:51,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:42:51,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:42:51,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:51,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:42:51,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:42:51,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:42:51,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822608298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:51,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:51,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:42:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732677157] [2022-11-16 12:42:51,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:51,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:42:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:42:51,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:42:51,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 216 [2022-11-16 12:42:51,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:51,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:51,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 216 [2022-11-16 12:42:51,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:52,241 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-11-16 12:42:52,241 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-16 12:42:52,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 1/106 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-11-16 12:42:52,242 INFO L137 encePairwiseOnDemand]: 205/216 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-11-16 12:42:52,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-11-16 12:42:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:42:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:42:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4090 transitions. [2022-11-16 12:42:52,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7889660493827161 [2022-11-16 12:42:52,252 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4090 transitions. [2022-11-16 12:42:52,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4090 transitions. [2022-11-16 12:42:52,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:52,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4090 transitions. [2022-11-16 12:42:52,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 170.41666666666666) internal successors, (4090), 24 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:52,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 216.0) internal successors, (5400), 25 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:52,277 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 216.0) internal successors, (5400), 25 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:52,278 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 4090 transitions. [2022-11-16 12:42:52,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-11-16 12:42:52,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 371 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:42:52,281 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-11-16 12:42:52,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-11-16 12:42:52,282 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-11-16 12:42:52,282 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-11-16 12:42:52,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:52,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-16 12:42:52,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-16 12:42:52,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 12:42:52,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 12:42:52,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:52,508 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-16 12:42:52,511 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:42:52,511 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:42:52,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:42:52 BasicIcfg [2022-11-16 12:42:52,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:42:52,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:42:52,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:42:52,517 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:42:52,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:47" (3/4) ... [2022-11-16 12:42:52,520 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:42:52,525 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:42:52,526 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:42:52,530 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-16 12:42:52,531 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:42:52,531 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:42:52,531 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:42:52,585 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:42:52,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:42:52,593 INFO L158 Benchmark]: Toolchain (without parser) took 6103.02ms. Allocated memory was 94.4MB in the beginning and 157.3MB in the end (delta: 62.9MB). Free memory was 60.6MB in the beginning and 129.0MB in the end (delta: -68.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:42:52,593 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:42:52,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.23ms. Allocated memory is still 94.4MB. Free memory was 60.4MB in the beginning and 70.6MB in the end (delta: -10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:42:52,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.36ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 68.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:52,595 INFO L158 Benchmark]: Boogie Preprocessor took 35.32ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 66.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:52,595 INFO L158 Benchmark]: RCFGBuilder took 747.47ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 48.7MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 12:42:52,596 INFO L158 Benchmark]: TraceAbstraction took 4876.84ms. Allocated memory was 94.4MB in the beginning and 157.3MB in the end (delta: 62.9MB). Free memory was 48.2MB in the beginning and 131.8MB in the end (delta: -83.6MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2022-11-16 12:42:52,599 INFO L158 Benchmark]: Witness Printer took 75.86ms. Allocated memory is still 157.3MB. Free memory was 131.8MB in the beginning and 129.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:52,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.23ms. Allocated memory is still 94.4MB. Free memory was 60.4MB in the beginning and 70.6MB in the end (delta: -10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.36ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 68.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.32ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 66.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 747.47ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 48.7MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4876.84ms. Allocated memory was 94.4MB in the beginning and 157.3MB in the end (delta: 62.9MB). Free memory was 48.2MB in the beginning and 131.8MB in the end (delta: -83.6MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. * Witness Printer took 75.86ms. Allocated memory is still 157.3MB. Free memory was 131.8MB in the beginning and 129.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: 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 5 procedures, 290 locations, 4 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: 4.6s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 254 IncrementalHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 20 mSDtfsCounter, 254 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=2, InterpolantAutomatonStates: 54, 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, 1.8s InterpolantComputationTime, 509 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 1193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 123/266 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:42:52,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aa4a76e-4eaa-4650-9bb7-d9abdd5ccc78/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE