./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- 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-6b4ec56 [2022-11-20 09:27:22,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:22,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:22,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:22,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:22,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:22,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:22,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:22,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:22,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:22,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:22,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:22,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:22,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:22,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:22,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:22,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:22,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:22,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:22,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:22,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:22,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:22,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:22,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:22,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:22,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:22,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:22,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:22,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:22,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:22,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:22,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:22,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:22,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:22,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:22,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:22,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:22,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:22,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:22,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:22,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:22,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:27:22,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:22,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:22,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:22,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:23,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:23,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:23,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:23,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:23,002 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:23,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:23,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:23,004 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:23,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:23,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:23,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:23,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:23,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:23,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:23,006 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:27:23,007 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:23,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:23,007 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:23,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:23,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:23,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:23,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:23,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:23,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:23,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:23,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:23,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:23,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:23,011 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:23,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:23,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:23,012 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_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-11-20 09:27:23,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:23,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:23,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:23,380 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:23,381 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:23,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/lazy01.i [2022-11-20 09:27:26,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:26,831 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:26,832 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/sv-benchmarks/c/pthread/lazy01.i [2022-11-20 09:27:26,844 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/data/544dfb6d6/f04feed7ec33411ba9fff22a4f5dbae4/FLAGf1b018419 [2022-11-20 09:27:26,858 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/data/544dfb6d6/f04feed7ec33411ba9fff22a4f5dbae4 [2022-11-20 09:27:26,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:26,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:26,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:26,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:26,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:26,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:26" (1/1) ... [2022-11-20 09:27:26,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4a69d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:26, skipping insertion in model container [2022-11-20 09:27:26,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:26" (1/1) ... [2022-11-20 09:27:26,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:26,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:27,392 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_38d171d8-5f97-4111-ae7e-014c777887fd/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-20 09:27:27,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:27,411 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:27,443 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_38d171d8-5f97-4111-ae7e-014c777887fd/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-20 09:27:27,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:27,481 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:27,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27 WrapperNode [2022-11-20 09:27:27,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:27,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:27,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:27,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:27,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,543 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-11-20 09:27:27,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:27,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:27,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:27,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:27,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:27,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:27,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:27,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:27,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:27,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:27:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:27:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:27:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:27:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:27:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:27:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:27:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:27,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:27,667 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:27:27,845 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:27,852 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:28,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:28,091 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:28,092 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:27:28,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:28 BoogieIcfgContainer [2022-11-20 09:27:28,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:28,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:28,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:28,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:28,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:26" (1/3) ... [2022-11-20 09:27:28,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d808978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:28, skipping insertion in model container [2022-11-20 09:27:28,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (2/3) ... [2022-11-20 09:27:28,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d808978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:28, skipping insertion in model container [2022-11-20 09:27:28,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:28" (3/3) ... [2022-11-20 09:27:28,104 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-11-20 09:27:28,113 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:27:28,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:28,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 09:27:28,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:27:28,197 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:27:28,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 98 transitions, 220 flow [2022-11-20 09:27:28,280 INFO L130 PetriNetUnfolder]: 1/95 cut-off events. [2022-11-20 09:27:28,281 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:27:28,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 1/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-20 09:27:28,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 98 transitions, 220 flow [2022-11-20 09:27:28,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 83 transitions, 181 flow [2022-11-20 09:27:28,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:28,307 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;@3aee46ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:28,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-20 09:27:28,320 INFO L130 PetriNetUnfolder]: 0/37 cut-off events. [2022-11-20 09:27:28,320 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:28,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:28,321 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] [2022-11-20 09:27:28,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-20 09:27:28,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash 372413407, now seen corresponding path program 1 times [2022-11-20 09:27:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043920798] [2022-11-20 09:27:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043920798] [2022-11-20 09:27:28,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043920798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:28,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576887924] [2022-11-20 09:27:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:28,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:28,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-20 09:27:28,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:28,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-20 09:27:28,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:29,186 INFO L130 PetriNetUnfolder]: 177/580 cut-off events. [2022-11-20 09:27:29,186 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-11-20 09:27:29,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 580 events. 177/580 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3459 event pairs, 69 based on Foata normal form. 29/541 useless extension candidates. Maximal degree in co-relation 817. Up to 167 conditions per place. [2022-11-20 09:27:29,198 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 31 selfloop transitions, 5 changer transitions 15/110 dead transitions. [2022-11-20 09:27:29,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 351 flow [2022-11-20 09:27:29,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2022-11-20 09:27:29,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.889795918367347 [2022-11-20 09:27:29,223 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2022-11-20 09:27:29,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2022-11-20 09:27:29,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:29,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2022-11-20 09:27:29,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,256 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 181 flow. Second operand 5 states and 436 transitions. [2022-11-20 09:27:29,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 351 flow [2022-11-20 09:27:29,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 110 transitions, 333 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:29,271 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 202 flow [2022-11-20 09:27:29,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2022-11-20 09:27:29,278 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2022-11-20 09:27:29,278 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 202 flow [2022-11-20 09:27:29,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:29,280 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] [2022-11-20 09:27:29,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:29,280 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-20 09:27:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash 771964932, now seen corresponding path program 1 times [2022-11-20 09:27:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066705813] [2022-11-20 09:27:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:29,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066705813] [2022-11-20 09:27:29,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066705813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:29,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:29,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:29,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513127044] [2022-11-20 09:27:29,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:29,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:29,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:29,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 98 [2022-11-20 09:27:29,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:29,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 98 [2022-11-20 09:27:29,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:29,587 INFO L130 PetriNetUnfolder]: 14/199 cut-off events. [2022-11-20 09:27:29,587 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-20 09:27:29,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 199 events. 14/199 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 756 event pairs, 6 based on Foata normal form. 16/214 useless extension candidates. Maximal degree in co-relation 186. Up to 27 conditions per place. [2022-11-20 09:27:29,589 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 14 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2022-11-20 09:27:29,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 252 flow [2022-11-20 09:27:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:27:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2022-11-20 09:27:29,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8639455782312925 [2022-11-20 09:27:29,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2022-11-20 09:27:29,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2022-11-20 09:27:29,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:29,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2022-11-20 09:27:29,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,595 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 202 flow. Second operand 3 states and 254 transitions. [2022-11-20 09:27:29,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 252 flow [2022-11-20 09:27:29,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 235 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-20 09:27:29,599 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 197 flow [2022-11-20 09:27:29,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2022-11-20 09:27:29,600 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2022-11-20 09:27:29,601 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 197 flow [2022-11-20 09:27:29,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:29,602 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] [2022-11-20 09:27:29,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:29,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-20 09:27:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -379742376, now seen corresponding path program 1 times [2022-11-20 09:27:29,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169699512] [2022-11-20 09:27:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169699512] [2022-11-20 09:27:29,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169699512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:29,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:29,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62694248] [2022-11-20 09:27:29,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:29,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-20 09:27:29,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:29,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-20 09:27:29,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:29,895 INFO L130 PetriNetUnfolder]: 36/247 cut-off events. [2022-11-20 09:27:29,896 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-20 09:27:29,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 247 events. 36/247 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1141 event pairs, 13 based on Foata normal form. 6/250 useless extension candidates. Maximal degree in co-relation 170. Up to 36 conditions per place. [2022-11-20 09:27:29,898 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 25 selfloop transitions, 8 changer transitions 4/96 dead transitions. [2022-11-20 09:27:29,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 96 transitions, 319 flow [2022-11-20 09:27:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2022-11-20 09:27:29,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8236151603498543 [2022-11-20 09:27:29,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2022-11-20 09:27:29,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2022-11-20 09:27:29,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:29,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2022-11-20 09:27:29,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,906 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 197 flow. Second operand 7 states and 565 transitions. [2022-11-20 09:27:29,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 96 transitions, 319 flow [2022-11-20 09:27:29,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:29,910 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 219 flow [2022-11-20 09:27:29,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2022-11-20 09:27:29,911 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2022-11-20 09:27:29,911 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 219 flow [2022-11-20 09:27:29,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:29,912 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] [2022-11-20 09:27:29,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:29,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-20 09:27:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1289307963, now seen corresponding path program 1 times [2022-11-20 09:27:29,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040254819] [2022-11-20 09:27:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040254819] [2022-11-20 09:27:30,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040254819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:30,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819502652] [2022-11-20 09:27:30,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:30,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:30,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-20 09:27:30,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:30,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-20 09:27:30,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:30,249 INFO L130 PetriNetUnfolder]: 32/220 cut-off events. [2022-11-20 09:27:30,249 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-11-20 09:27:30,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 220 events. 32/220 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 950 event pairs, 11 based on Foata normal form. 5/223 useless extension candidates. Maximal degree in co-relation 269. Up to 43 conditions per place. [2022-11-20 09:27:30,251 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 24 selfloop transitions, 5 changer transitions 2/90 dead transitions. [2022-11-20 09:27:30,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 312 flow [2022-11-20 09:27:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:27:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 481 transitions. [2022-11-20 09:27:30,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180272108843537 [2022-11-20 09:27:30,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 481 transitions. [2022-11-20 09:27:30,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 481 transitions. [2022-11-20 09:27:30,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:30,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 481 transitions. [2022-11-20 09:27:30,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,264 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,264 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 219 flow. Second operand 6 states and 481 transitions. [2022-11-20 09:27:30,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 312 flow [2022-11-20 09:27:30,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 299 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 09:27:30,272 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 210 flow [2022-11-20 09:27:30,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2022-11-20 09:27:30,279 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2022-11-20 09:27:30,279 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 210 flow [2022-11-20 09:27:30,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:30,280 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] [2022-11-20 09:27:30,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:30,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-20 09:27:30,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:30,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1112888466, now seen corresponding path program 1 times [2022-11-20 09:27:30,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:30,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117799857] [2022-11-20 09:27:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:30,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117799857] [2022-11-20 09:27:30,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117799857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285560566] [2022-11-20 09:27:30,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:30,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:30,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-20 09:27:30,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:30,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-20 09:27:30,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:30,574 INFO L130 PetriNetUnfolder]: 31/216 cut-off events. [2022-11-20 09:27:30,574 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-20 09:27:30,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 216 events. 31/216 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 910 event pairs, 17 based on Foata normal form. 3/215 useless extension candidates. Maximal degree in co-relation 230. Up to 50 conditions per place. [2022-11-20 09:27:30,575 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 15 selfloop transitions, 2 changer transitions 13/86 dead transitions. [2022-11-20 09:27:30,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 86 transitions, 287 flow [2022-11-20 09:27:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2022-11-20 09:27:30,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8204081632653061 [2022-11-20 09:27:30,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2022-11-20 09:27:30,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2022-11-20 09:27:30,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:30,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2022-11-20 09:27:30,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,582 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,583 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 210 flow. Second operand 5 states and 402 transitions. [2022-11-20 09:27:30,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 86 transitions, 287 flow [2022-11-20 09:27:30,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 86 transitions, 276 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:30,586 INFO L231 Difference]: Finished difference. Result has 92 places, 71 transitions, 179 flow [2022-11-20 09:27:30,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=92, PETRI_TRANSITIONS=71} [2022-11-20 09:27:30,589 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 0 predicate places. [2022-11-20 09:27:30,589 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 71 transitions, 179 flow [2022-11-20 09:27:30,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:30,590 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] [2022-11-20 09:27:30,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:30,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2022-11-20 09:27:30,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:30,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1308719573, now seen corresponding path program 1 times [2022-11-20 09:27:30,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:30,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638840142] [2022-11-20 09:27:30,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638840142] [2022-11-20 09:27:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638840142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:30,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407584343] [2022-11-20 09:27:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:30,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-20 09:27:30,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 71 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:30,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-20 09:27:30,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:30,761 INFO L130 PetriNetUnfolder]: 16/148 cut-off events. [2022-11-20 09:27:30,761 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-20 09:27:30,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 148 events. 16/148 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 460 event pairs, 5 based on Foata normal form. 7/153 useless extension candidates. Maximal degree in co-relation 132. Up to 22 conditions per place. [2022-11-20 09:27:30,762 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2022-11-20 09:27:30,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 231 flow [2022-11-20 09:27:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:27:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2022-11-20 09:27:30,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8010204081632653 [2022-11-20 09:27:30,764 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 471 transitions. [2022-11-20 09:27:30,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 471 transitions. [2022-11-20 09:27:30,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:30,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 471 transitions. [2022-11-20 09:27:30,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,768 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,768 INFO L175 Difference]: Start difference. First operand has 92 places, 71 transitions, 179 flow. Second operand 6 states and 471 transitions. [2022-11-20 09:27:30,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 231 flow [2022-11-20 09:27:30,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 221 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:30,770 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2022-11-20 09:27:30,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2022-11-20 09:27:30,771 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, -9 predicate places. [2022-11-20 09:27:30,771 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2022-11-20 09:27:30,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2022-11-20 09:27:30,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-20 09:27:30,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-20 09:27:30,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-20 09:27:30,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2022-11-20 09:27:30,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2022-11-20 09:27:30,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2022-11-20 09:27:30,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-20 09:27:30,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-20 09:27:30,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-20 09:27:30,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-20 09:27:30,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:27:30,777 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 09:27:30,782 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 09:27:30,782 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:27:30,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:27:30 BasicIcfg [2022-11-20 09:27:30,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:27:30,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:27:30,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:27:30,788 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:27:30,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:28" (3/4) ... [2022-11-20 09:27:30,790 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:27:30,796 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 09:27:30,796 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 09:27:30,797 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 09:27:30,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 09:27:30,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 09:27:30,801 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 09:27:30,801 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:27:30,830 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:27:30,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:27:30,831 INFO L158 Benchmark]: Toolchain (without parser) took 3968.41ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 120.1MB in the beginning and 80.9MB in the end (delta: 39.2MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2022-11-20 09:27:30,831 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 82.3MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:30,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.75ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 100.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 09:27:30,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.76ms. Allocated memory is still 165.7MB. Free memory was 100.6MB in the beginning and 98.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:30,832 INFO L158 Benchmark]: Boogie Preprocessor took 29.55ms. Allocated memory is still 165.7MB. Free memory was 98.5MB in the beginning and 97.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:30,833 INFO L158 Benchmark]: RCFGBuilder took 519.97ms. Allocated memory is still 165.7MB. Free memory was 97.0MB in the beginning and 133.6MB in the end (delta: -36.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2022-11-20 09:27:30,833 INFO L158 Benchmark]: TraceAbstraction took 2690.43ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 133.6MB in the beginning and 84.1MB in the end (delta: 49.6MB). Peak memory consumption was 83.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:30,834 INFO L158 Benchmark]: Witness Printer took 43.02ms. Allocated memory is still 199.2MB. Free memory was 84.1MB in the beginning and 80.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:30,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 82.3MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 617.75ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 100.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.76ms. Allocated memory is still 165.7MB. Free memory was 100.6MB in the beginning and 98.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.55ms. Allocated memory is still 165.7MB. Free memory was 98.5MB in the beginning and 97.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.97ms. Allocated memory is still 165.7MB. Free memory was 97.0MB in the beginning and 133.6MB in the end (delta: -36.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2690.43ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 133.6MB in the beginning and 84.1MB in the end (delta: 49.6MB). Peak memory consumption was 83.1MB. Max. memory is 16.1GB. * Witness Printer took 43.02ms. Allocated memory is still 199.2MB. Free memory was 84.1MB in the beginning and 80.9MB 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: - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: 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, 137 locations, 11 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: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 122 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 266 IncrementalHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 35 mSDtfsCounter, 266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=3, InterpolantAutomatonStates: 32, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 09:27:30,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38d171d8-5f97-4111-ae7e-014c777887fd/bin/uautomizer-ug76WZFUDN/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