./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.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_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/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_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/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_84f66352-55c9-40c0-b4e7-ba277be3b977/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 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- 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 10:35:47,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:35:47,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:35:47,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:35:47,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:35:47,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:35:47,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:35:47,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:35:47,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:35:47,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:35:47,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:35:47,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:35:47,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:35:47,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:35:47,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:35:47,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:35:47,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:35:47,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:35:47,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:35:47,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:35:47,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:35:47,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:35:47,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:35:47,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:35:47,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:35:47,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:35:47,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:35:47,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:35:47,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:35:47,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:35:47,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:35:47,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:35:47,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:35:47,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:35:47,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:35:47,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:35:47,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:35:47,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:35:47,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:35:47,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:35:47,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:35:47,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:35:48,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:35:48,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:35:48,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:35:48,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:35:48,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:35:48,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:35:48,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:35:48,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:35:48,006 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:35:48,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:35:48,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:35:48,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:35:48,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:35:48,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:35:48,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:35:48,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:35:48,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:35:48,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:35:48,008 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:35:48,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:35:48,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:35:48,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:35:48,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:35:48,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:35:48,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:35:48,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:35:48,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:48,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:35:48,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:35:48,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:35:48,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:35:48,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:35:48,010 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:35:48,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:35:48,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:35:48,011 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_84f66352-55c9-40c0-b4e7-ba277be3b977/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-11-20 10:35:48,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:35:48,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:35:48,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:35:48,271 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:35:48,271 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:35:48,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-20 10:35:51,342 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:35:51,692 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:35:51,692 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-11-20 10:35:51,708 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/data/0781087d8/54311863dee742c999f57107b2aef8b4/FLAG0b6b8964c [2022-11-20 10:35:51,734 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/data/0781087d8/54311863dee742c999f57107b2aef8b4 [2022-11-20 10:35:51,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:35:51,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:35:51,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:51,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:35:51,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:35:51,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:51" (1/1) ... [2022-11-20 10:35:51,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1128562e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:51, skipping insertion in model container [2022-11-20 10:35:51,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:51" (1/1) ... [2022-11-20 10:35:51,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:35:51,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:35:52,414 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_84f66352-55c9-40c0-b4e7-ba277be3b977/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-20 10:35:52,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:52,581 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:35:52,636 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_84f66352-55c9-40c0-b4e7-ba277be3b977/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-11-20 10:35:52,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:52,748 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:35:52,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52 WrapperNode [2022-11-20 10:35:52,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:52,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:52,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:35:52,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:35:52,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,843 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 238 [2022-11-20 10:35:52,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:52,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:35:52,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:35:52,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:35:52,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:35:52,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:35:52,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:35:52,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:35:52,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (1/1) ... [2022-11-20 10:35:52,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:52,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:52,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:35:52,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:35:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:35:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:35:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 10:35:52,994 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 10:35:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:35:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:35:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 10:35:52,995 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 10:35:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:35:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:35:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:35:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:35:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:35:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:35:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:35:52,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:35:52,998 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 10:35:53,154 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:35:53,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:35:53,764 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:35:53,779 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:35:53,782 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 10:35:53,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:53 BoogieIcfgContainer [2022-11-20 10:35:53,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:35:53,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:35:53,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:35:53,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:35:53,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:35:51" (1/3) ... [2022-11-20 10:35:53,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671f7f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:53, skipping insertion in model container [2022-11-20 10:35:53,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:52" (2/3) ... [2022-11-20 10:35:53,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671f7f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:53, skipping insertion in model container [2022-11-20 10:35:53,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:53" (3/3) ... [2022-11-20 10:35:53,801 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-11-20 10:35:53,812 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:35:53,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:35:53,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 10:35:53,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:35:53,994 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:35:54,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 265 transitions, 552 flow [2022-11-20 10:35:54,242 INFO L130 PetriNetUnfolder]: 54/494 cut-off events. [2022-11-20 10:35:54,243 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-20 10:35:54,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 494 events. 54/494 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2027 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2022-11-20 10:35:54,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 265 transitions, 552 flow [2022-11-20 10:35:54,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 265 transitions, 552 flow [2022-11-20 10:35:54,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:35:54,297 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;@31e2ef89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:35:54,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-20 10:35:54,310 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-11-20 10:35:54,310 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:35:54,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:54,311 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 10:35:54,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash -821852162, now seen corresponding path program 1 times [2022-11-20 10:35:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:54,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138412459] [2022-11-20 10:35:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:54,660 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 10:35:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:54,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138412459] [2022-11-20 10:35:54,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138412459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:54,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:54,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:35:54,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039812935] [2022-11-20 10:35:54,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:54,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:35:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:54,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:35:54,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:35:54,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 265 [2022-11-20 10:35:54,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 265 transitions, 552 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 10:35:54,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:54,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 265 [2022-11-20 10:35:54,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:54,900 INFO L130 PetriNetUnfolder]: 15/453 cut-off events. [2022-11-20 10:35:54,901 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-20 10:35:54,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 453 events. 15/453 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1786 event pairs, 0 based on Foata normal form. 57/457 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2022-11-20 10:35:54,908 INFO L137 encePairwiseOnDemand]: 248/265 looper letters, 6 selfloop transitions, 0 changer transitions 0/247 dead transitions. [2022-11-20 10:35:54,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 247 transitions, 528 flow [2022-11-20 10:35:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:35:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:35:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 505 transitions. [2022-11-20 10:35:54,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2022-11-20 10:35:54,936 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 505 transitions. [2022-11-20 10:35:54,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 505 transitions. [2022-11-20 10:35:54,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:54,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 505 transitions. [2022-11-20 10:35:54,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 10:35:54,960 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 10:35:54,962 INFO L175 Difference]: Start difference. First operand has 245 places, 265 transitions, 552 flow. Second operand 2 states and 505 transitions. [2022-11-20 10:35:54,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 247 transitions, 528 flow [2022-11-20 10:35:54,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:54,977 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 516 flow [2022-11-20 10:35:54,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=516, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-20 10:35:54,986 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-20 10:35:54,986 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 516 flow [2022-11-20 10:35:54,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 10:35:54,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:54,988 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 10:35:54,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:35:54,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash -692769443, now seen corresponding path program 1 times [2022-11-20 10:35:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:54,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207261907] [2022-11-20 10:35:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:55,193 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 10:35:55,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:55,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207261907] [2022-11-20 10:35:55,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207261907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:55,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:55,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851959511] [2022-11-20 10:35:55,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:55,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:55,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 265 [2022-11-20 10:35:55,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 10:35:55,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:55,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 265 [2022-11-20 10:35:55,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:55,392 INFO L130 PetriNetUnfolder]: 15/472 cut-off events. [2022-11-20 10:35:55,392 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-20 10:35:55,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 472 events. 15/472 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1781 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 513. Up to 20 conditions per place. [2022-11-20 10:35:55,397 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 17 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2022-11-20 10:35:55,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 252 transitions, 564 flow [2022-11-20 10:35:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-11-20 10:35:55,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044025157232705 [2022-11-20 10:35:55,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-11-20 10:35:55,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-11-20 10:35:55,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:55,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-11-20 10:35:55,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 10:35:55,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 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 10:35:55,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 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 10:35:55,412 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 516 flow. Second operand 3 states and 719 transitions. [2022-11-20 10:35:55,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 252 transitions, 564 flow [2022-11-20 10:35:55,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:55,426 INFO L231 Difference]: Finished difference. Result has 248 places, 248 transitions, 528 flow [2022-11-20 10:35:55,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=248, PETRI_TRANSITIONS=248} [2022-11-20 10:35:55,428 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 3 predicate places. [2022-11-20 10:35:55,429 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 248 transitions, 528 flow [2022-11-20 10:35:55,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 10:35:55,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:55,430 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 10:35:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:35:55,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1440349676, now seen corresponding path program 1 times [2022-11-20 10:35:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:55,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604321538] [2022-11-20 10:35:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:55,707 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 10:35:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:55,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604321538] [2022-11-20 10:35:55,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604321538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:55,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:55,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:55,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964809685] [2022-11-20 10:35:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:55,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-20 10:35:55,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 248 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 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 10:35:55,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:55,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-20 10:35:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:55,922 INFO L130 PetriNetUnfolder]: 15/471 cut-off events. [2022-11-20 10:35:55,922 INFO L131 PetriNetUnfolder]: For 34/50 co-relation queries the response was YES. [2022-11-20 10:35:55,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 471 events. 15/471 cut-off events. For 34/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1789 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 525. Up to 25 conditions per place. [2022-11-20 10:35:55,926 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 23 selfloop transitions, 4 changer transitions 0/255 dead transitions. [2022-11-20 10:35:55,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 255 transitions, 596 flow [2022-11-20 10:35:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:35:55,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1169 transitions. [2022-11-20 10:35:55,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8822641509433963 [2022-11-20 10:35:55,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1169 transitions. [2022-11-20 10:35:55,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1169 transitions. [2022-11-20 10:35:55,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:55,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1169 transitions. [2022-11-20 10:35:55,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 0 states have call successors, (0), 0 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 10:35:55,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 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 10:35:55,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 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 10:35:55,941 INFO L175 Difference]: Start difference. First operand has 248 places, 248 transitions, 528 flow. Second operand 5 states and 1169 transitions. [2022-11-20 10:35:55,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 255 transitions, 596 flow [2022-11-20 10:35:55,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 255 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:35:55,948 INFO L231 Difference]: Finished difference. Result has 254 places, 250 transitions, 552 flow [2022-11-20 10:35:55,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=254, PETRI_TRANSITIONS=250} [2022-11-20 10:35:55,950 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-20 10:35:55,950 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 250 transitions, 552 flow [2022-11-20 10:35:55,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 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 10:35:55,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:55,952 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:55,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:35:55,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:55,953 INFO L85 PathProgramCache]: Analyzing trace with hash -240800717, now seen corresponding path program 1 times [2022-11-20 10:35:55,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:55,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153672772] [2022-11-20 10:35:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:55,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:56,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:56,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153672772] [2022-11-20 10:35:56,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153672772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:56,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42055106] [2022-11-20 10:35:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:56,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:56,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:56,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:56,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:35:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:56,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:56,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:56,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:56,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42055106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:35:56,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:35:56,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 10:35:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551946563] [2022-11-20 10:35:56,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:35:56,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:35:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:56,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:35:56,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:35:56,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-20 10:35:56,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 250 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 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 10:35:56,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:56,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-20 10:35:56,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:56,888 INFO L130 PetriNetUnfolder]: 15/491 cut-off events. [2022-11-20 10:35:56,888 INFO L131 PetriNetUnfolder]: For 40/56 co-relation queries the response was YES. [2022-11-20 10:35:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 491 events. 15/491 cut-off events. For 40/56 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1693 event pairs, 0 based on Foata normal form. 3/444 useless extension candidates. Maximal degree in co-relation 569. Up to 16 conditions per place. [2022-11-20 10:35:56,893 INFO L137 encePairwiseOnDemand]: 257/265 looper letters, 26 selfloop transitions, 11 changer transitions 0/265 dead transitions. [2022-11-20 10:35:56,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 265 transitions, 664 flow [2022-11-20 10:35:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:35:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:35:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2548 transitions. [2022-11-20 10:35:56,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740994854202402 [2022-11-20 10:35:56,901 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2548 transitions. [2022-11-20 10:35:56,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2548 transitions. [2022-11-20 10:35:56,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:56,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2548 transitions. [2022-11-20 10:35:56,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.63636363636363) internal successors, (2548), 11 states have internal predecessors, (2548), 0 states have call successors, (0), 0 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 10:35:56,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 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 10:35:56,918 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 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 10:35:56,919 INFO L175 Difference]: Start difference. First operand has 254 places, 250 transitions, 552 flow. Second operand 11 states and 2548 transitions. [2022-11-20 10:35:56,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 265 transitions, 664 flow [2022-11-20 10:35:56,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 265 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:35:56,926 INFO L231 Difference]: Finished difference. Result has 267 places, 255 transitions, 614 flow [2022-11-20 10:35:56,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=614, PETRI_PLACES=267, PETRI_TRANSITIONS=255} [2022-11-20 10:35:56,927 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 22 predicate places. [2022-11-20 10:35:56,927 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 255 transitions, 614 flow [2022-11-20 10:35:56,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 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 10:35:56,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:56,930 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 10:35:56,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:57,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:57,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2085690012, now seen corresponding path program 1 times [2022-11-20 10:35:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:57,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192593174] [2022-11-20 10:35:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:57,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:57,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192593174] [2022-11-20 10:35:57,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192593174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:57,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435000964] [2022-11-20 10:35:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:57,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:57,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:57,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:57,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:35:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:57,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:35:57,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:57,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:57,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435000964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:57,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:57,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:35:57,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477824050] [2022-11-20 10:35:57,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:57,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:35:57,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:57,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:35:57,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:35:57,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-20 10:35:57,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 255 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 10:35:57,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:57,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-20 10:35:57,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:57,875 INFO L130 PetriNetUnfolder]: 15/489 cut-off events. [2022-11-20 10:35:57,875 INFO L131 PetriNetUnfolder]: For 61/77 co-relation queries the response was YES. [2022-11-20 10:35:57,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 489 events. 15/489 cut-off events. For 61/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1692 event pairs, 0 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 584. Up to 22 conditions per place. [2022-11-20 10:35:57,880 INFO L137 encePairwiseOnDemand]: 260/265 looper letters, 22 selfloop transitions, 8 changer transitions 0/258 dead transitions. [2022-11-20 10:35:57,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 258 transitions, 672 flow [2022-11-20 10:35:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:35:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:35:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1623 transitions. [2022-11-20 10:35:57,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8749326145552561 [2022-11-20 10:35:57,885 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1623 transitions. [2022-11-20 10:35:57,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1623 transitions. [2022-11-20 10:35:57,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:57,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1623 transitions. [2022-11-20 10:35:57,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 0 states have call successors, (0), 0 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 10:35:57,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 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 10:35:57,896 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 0 states have call successors, (0), 0 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 10:35:57,897 INFO L175 Difference]: Start difference. First operand has 267 places, 255 transitions, 614 flow. Second operand 7 states and 1623 transitions. [2022-11-20 10:35:57,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 258 transitions, 672 flow [2022-11-20 10:35:57,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 258 transitions, 658 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 10:35:57,905 INFO L231 Difference]: Finished difference. Result has 267 places, 253 transitions, 602 flow [2022-11-20 10:35:57,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=602, PETRI_PLACES=267, PETRI_TRANSITIONS=253} [2022-11-20 10:35:57,907 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 22 predicate places. [2022-11-20 10:35:57,907 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 253 transitions, 602 flow [2022-11-20 10:35:57,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 10:35:57,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:57,908 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:35:57,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:35:58,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:58,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1354347968, now seen corresponding path program 1 times [2022-11-20 10:35:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:58,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696675225] [2022-11-20 10:35:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:35:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:58,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696675225] [2022-11-20 10:35:58,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696675225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:58,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:58,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544256771] [2022-11-20 10:35:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:58,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-20 10:35:58,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 253 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 10:35:58,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:58,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-20 10:35:58,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:58,468 INFO L130 PetriNetUnfolder]: 15/488 cut-off events. [2022-11-20 10:35:58,468 INFO L131 PetriNetUnfolder]: For 62/78 co-relation queries the response was YES. [2022-11-20 10:35:58,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 488 events. 15/488 cut-off events. For 62/78 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1691 event pairs, 0 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 581. Up to 17 conditions per place. [2022-11-20 10:35:58,473 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 13 selfloop transitions, 12 changer transitions 0/253 dead transitions. [2022-11-20 10:35:58,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 253 transitions, 650 flow [2022-11-20 10:35:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:35:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1159 transitions. [2022-11-20 10:35:58,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8747169811320755 [2022-11-20 10:35:58,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1159 transitions. [2022-11-20 10:35:58,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1159 transitions. [2022-11-20 10:35:58,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:58,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1159 transitions. [2022-11-20 10:35:58,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 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 10:35:58,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 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 10:35:58,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 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 10:35:58,485 INFO L175 Difference]: Start difference. First operand has 267 places, 253 transitions, 602 flow. Second operand 5 states and 1159 transitions. [2022-11-20 10:35:58,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 253 transitions, 650 flow [2022-11-20 10:35:58,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 253 transitions, 631 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-20 10:35:58,492 INFO L231 Difference]: Finished difference. Result has 263 places, 253 transitions, 613 flow [2022-11-20 10:35:58,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=613, PETRI_PLACES=263, PETRI_TRANSITIONS=253} [2022-11-20 10:35:58,494 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 18 predicate places. [2022-11-20 10:35:58,494 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 253 transitions, 613 flow [2022-11-20 10:35:58,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 10:35:58,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:58,496 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:35:58,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:35:58,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1685368159, now seen corresponding path program 2 times [2022-11-20 10:35:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:58,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169236987] [2022-11-20 10:35:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:58,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-20 10:35:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:58,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169236987] [2022-11-20 10:35:58,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169236987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:58,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:58,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:58,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368239524] [2022-11-20 10:35:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:58,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:58,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:58,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:58,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:58,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 265 [2022-11-20 10:35:58,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 253 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 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 10:35:58,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:58,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 265 [2022-11-20 10:35:58,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:58,776 INFO L130 PetriNetUnfolder]: 10/371 cut-off events. [2022-11-20 10:35:58,777 INFO L131 PetriNetUnfolder]: For 55/101 co-relation queries the response was YES. [2022-11-20 10:35:58,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 371 events. 10/371 cut-off events. For 55/101 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 926 event pairs, 0 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 453. Up to 15 conditions per place. [2022-11-20 10:35:58,780 INFO L137 encePairwiseOnDemand]: 258/265 looper letters, 14 selfloop transitions, 4 changer transitions 0/253 dead transitions. [2022-11-20 10:35:58,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 253 transitions, 649 flow [2022-11-20 10:35:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:35:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2022-11-20 10:35:58,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-20 10:35:58,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2022-11-20 10:35:58,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2022-11-20 10:35:58,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:58,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2022-11-20 10:35:58,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 0 states have call successors, (0), 0 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 10:35:58,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 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 10:35:58,792 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 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 10:35:58,793 INFO L175 Difference]: Start difference. First operand has 263 places, 253 transitions, 613 flow. Second operand 5 states and 1166 transitions. [2022-11-20 10:35:58,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 253 transitions, 649 flow [2022-11-20 10:35:58,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 253 transitions, 631 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:35:58,804 INFO L231 Difference]: Finished difference. Result has 263 places, 251 transitions, 603 flow [2022-11-20 10:35:58,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=263, PETRI_TRANSITIONS=251} [2022-11-20 10:35:58,806 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 18 predicate places. [2022-11-20 10:35:58,839 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 251 transitions, 603 flow [2022-11-20 10:35:58,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 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 10:35:58,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:58,840 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:35:58,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:35:58,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:35:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1703697416, now seen corresponding path program 1 times [2022-11-20 10:35:58,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:58,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30254655] [2022-11-20 10:35:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:58,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:35:59,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30254655] [2022-11-20 10:35:59,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30254655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:59,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732337396] [2022-11-20 10:35:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:59,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:59,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:59,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:59,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:35:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:59,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:35:59,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:35:59,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:35:59,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732337396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:35:59,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:35:59,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 10:35:59,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358577683] [2022-11-20 10:35:59,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:35:59,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:35:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:59,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:35:59,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:35:59,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-20 10:35:59,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 251 transitions, 603 flow. Second operand has 18 states, 18 states have (on average 231.44444444444446) internal successors, (4166), 18 states have internal predecessors, (4166), 0 states have call successors, (0), 0 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 10:35:59,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:59,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-20 10:35:59,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:00,258 INFO L130 PetriNetUnfolder]: 10/443 cut-off events. [2022-11-20 10:36:00,258 INFO L131 PetriNetUnfolder]: For 85/99 co-relation queries the response was YES. [2022-11-20 10:36:00,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 443 events. 10/443 cut-off events. For 85/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 916 event pairs, 0 based on Foata normal form. 4/413 useless extension candidates. Maximal degree in co-relation 609. Up to 15 conditions per place. [2022-11-20 10:36:00,264 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 45 selfloop transitions, 21 changer transitions 0/292 dead transitions. [2022-11-20 10:36:00,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 292 transitions, 901 flow [2022-11-20 10:36:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:36:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:36:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4858 transitions. [2022-11-20 10:36:00,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8729559748427673 [2022-11-20 10:36:00,276 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4858 transitions. [2022-11-20 10:36:00,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4858 transitions. [2022-11-20 10:36:00,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:00,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4858 transitions. [2022-11-20 10:36:00,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 231.33333333333334) internal successors, (4858), 21 states have internal predecessors, (4858), 0 states have call successors, (0), 0 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 10:36:00,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 265.0) internal successors, (5830), 22 states have internal predecessors, (5830), 0 states have call successors, (0), 0 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 10:36:00,317 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 265.0) internal successors, (5830), 22 states have internal predecessors, (5830), 0 states have call successors, (0), 0 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 10:36:00,326 INFO L175 Difference]: Start difference. First operand has 263 places, 251 transitions, 603 flow. Second operand 21 states and 4858 transitions. [2022-11-20 10:36:00,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 292 transitions, 901 flow [2022-11-20 10:36:00,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 292 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:36:00,334 INFO L231 Difference]: Finished difference. Result has 284 places, 264 transitions, 751 flow [2022-11-20 10:36:00,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=751, PETRI_PLACES=284, PETRI_TRANSITIONS=264} [2022-11-20 10:36:00,336 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 39 predicate places. [2022-11-20 10:36:00,338 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 264 transitions, 751 flow [2022-11-20 10:36:00,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 231.44444444444446) internal successors, (4166), 18 states have internal predecessors, (4166), 0 states have call successors, (0), 0 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 10:36:00,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:00,342 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 10:36:00,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:00,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:00,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:36:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1564415072, now seen corresponding path program 2 times [2022-11-20 10:36:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:00,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388993435] [2022-11-20 10:36:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:36:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388993435] [2022-11-20 10:36:01,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388993435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:01,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905984972] [2022-11-20 10:36:01,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:36:01,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:01,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:01,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:36:01,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:36:01,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:36:01,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:36:01,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:36:01,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:36:02,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905984972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:02,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:02,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-20 10:36:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659341411] [2022-11-20 10:36:02,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:02,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 10:36:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 10:36:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:36:02,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 265 [2022-11-20 10:36:02,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 264 transitions, 751 flow. Second operand has 34 states, 34 states have (on average 231.7058823529412) internal successors, (7878), 34 states have internal predecessors, (7878), 0 states have call successors, (0), 0 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 10:36:02,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:02,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 265 [2022-11-20 10:36:02,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:03,604 INFO L130 PetriNetUnfolder]: 10/587 cut-off events. [2022-11-20 10:36:03,605 INFO L131 PetriNetUnfolder]: For 432/446 co-relation queries the response was YES. [2022-11-20 10:36:03,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 587 events. 10/587 cut-off events. For 432/446 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 921 event pairs, 0 based on Foata normal form. 8/561 useless extension candidates. Maximal degree in co-relation 978. Up to 19 conditions per place. [2022-11-20 10:36:03,609 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 85 selfloop transitions, 45 changer transitions 0/356 dead transitions. [2022-11-20 10:36:03,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 356 transitions, 1479 flow [2022-11-20 10:36:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 10:36:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 10:36:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10398 transitions. [2022-11-20 10:36:03,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719496855345912 [2022-11-20 10:36:03,636 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10398 transitions. [2022-11-20 10:36:03,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10398 transitions. [2022-11-20 10:36:03,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:03,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10398 transitions. [2022-11-20 10:36:03,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 231.06666666666666) internal successors, (10398), 45 states have internal predecessors, (10398), 0 states have call successors, (0), 0 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 10:36:03,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 265.0) internal successors, (12190), 46 states have internal predecessors, (12190), 0 states have call successors, (0), 0 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 10:36:03,692 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 265.0) internal successors, (12190), 46 states have internal predecessors, (12190), 0 states have call successors, (0), 0 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 10:36:03,693 INFO L175 Difference]: Start difference. First operand has 284 places, 264 transitions, 751 flow. Second operand 45 states and 10398 transitions. [2022-11-20 10:36:03,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 356 transitions, 1479 flow [2022-11-20 10:36:03,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 356 transitions, 1413 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-20 10:36:03,704 INFO L231 Difference]: Finished difference. Result has 330 places, 289 transitions, 1053 flow [2022-11-20 10:36:03,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1053, PETRI_PLACES=330, PETRI_TRANSITIONS=289} [2022-11-20 10:36:03,706 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-20 10:36:03,707 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 289 transitions, 1053 flow [2022-11-20 10:36:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 231.7058823529412) internal successors, (7878), 34 states have internal predecessors, (7878), 0 states have call successors, (0), 0 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 10:36:03,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:03,710 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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] [2022-11-20 10:36:03,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:03,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:03,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 10:36:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash -472204016, now seen corresponding path program 3 times [2022-11-20 10:36:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:03,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559908596] [2022-11-20 10:36:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1905 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:36:06,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:06,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559908596] [2022-11-20 10:36:06,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559908596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:06,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861562599] [2022-11-20 10:36:06,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:36:06,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:06,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:06,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f66352-55c9-40c0-b4e7-ba277be3b977/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process