./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/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_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/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_63aeb2f8-11cb-48a0-8df0-5865edd03b12/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 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc --- 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 11:20:01,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:20:01,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:20:01,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:20:01,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:20:01,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:20:01,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:20:01,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:20:01,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:20:01,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:20:01,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:20:01,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:20:01,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:20:01,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:20:01,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:20:01,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:20:01,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:20:01,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:20:01,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:20:01,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:20:01,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:20:01,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:20:01,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:20:01,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:20:01,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:20:01,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:20:01,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:20:01,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:20:01,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:20:01,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:20:01,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:20:01,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:20:01,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:20:01,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:20:01,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:20:01,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:20:01,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:20:01,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:20:01,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:20:01,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:20:01,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:20:01,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:20:01,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:20:01,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:20:01,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:20:01,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:20:01,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:20:01,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:20:01,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:20:01,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:20:01,698 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:20:01,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:20:01,700 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:20:01,700 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:20:01,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:20:01,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:20:01,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:20:01,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:20:01,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:20:01,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:20:01,701 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:20:01,701 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:20:01,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:20:01,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:20:01,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:20:01,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:20:01,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:20:01,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:20:01,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:20:01,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:20:01,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:20:01,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:20:01,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:20:01,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:20:01,705 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:20:01,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:20:01,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:20:01,705 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_63aeb2f8-11cb-48a0-8df0-5865edd03b12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc [2022-11-20 11:20:01,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:20:02,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:20:02,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:20:02,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:20:02,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:20:02,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-20 11:20:04,986 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:20:05,349 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:20:05,353 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-20 11:20:05,365 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/data/a2c781a4e/52def7074d924d97b727447210ebbf18/FLAG905cdd3ff [2022-11-20 11:20:05,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/data/a2c781a4e/52def7074d924d97b727447210ebbf18 [2022-11-20 11:20:05,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:20:05,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:20:05,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:20:05,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:20:05,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:20:05,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:05,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d225d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05, skipping insertion in model container [2022-11-20 11:20:05,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:05,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:20:05,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:20:05,713 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_63aeb2f8-11cb-48a0-8df0-5865edd03b12/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-20 11:20:05,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:20:05,732 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:20:05,827 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_63aeb2f8-11cb-48a0-8df0-5865edd03b12/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-20 11:20:05,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:20:05,846 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:20:05,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05 WrapperNode [2022-11-20 11:20:05,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:20:05,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:20:05,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:20:05,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:20:05,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:05,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:05,986 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1656 [2022-11-20 11:20:05,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:20:05,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:20:05,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:20:05,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:20:05,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:05,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:20:06,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:20:06,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:20:06,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:20:06,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (1/1) ... [2022-11-20 11:20:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:20:06,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:06,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:20:06,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:20:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:20:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:20:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:20:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:20:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:20:06,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:20:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:20:06,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:20:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:20:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:20:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:20:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:20:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:20:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:20:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:20:06,197 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 11:20:06,492 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:20:06,494 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:20:08,348 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:20:11,561 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:20:11,562 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-20 11:20:11,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:20:11 BoogieIcfgContainer [2022-11-20 11:20:11,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:20:11,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:20:11,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:20:11,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:20:11,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:20:05" (1/3) ... [2022-11-20 11:20:11,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c983774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:20:11, skipping insertion in model container [2022-11-20 11:20:11,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:20:05" (2/3) ... [2022-11-20 11:20:11,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c983774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:20:11, skipping insertion in model container [2022-11-20 11:20:11,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:20:11" (3/3) ... [2022-11-20 11:20:11,580 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2022-11-20 11:20:11,590 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:20:11,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:20:11,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2022-11-20 11:20:11,602 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:20:12,560 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:20:12,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 517 places, 563 transitions, 1142 flow [2022-11-20 11:20:12,871 INFO L130 PetriNetUnfolder]: 53/561 cut-off events. [2022-11-20 11:20:12,871 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:20:12,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 561 events. 53/561 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 979 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 460. Up to 7 conditions per place. [2022-11-20 11:20:12,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 517 places, 563 transitions, 1142 flow [2022-11-20 11:20:12,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 498 places, 543 transitions, 1098 flow [2022-11-20 11:20:12,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:20:12,906 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;@4ebe6876, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:20:12,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2022-11-20 11:20:12,916 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-11-20 11:20:12,916 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:20:12,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:12,917 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] [2022-11-20 11:20:12,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2022-11-20 11:20:12,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash 776852918, now seen corresponding path program 1 times [2022-11-20 11:20:12,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:12,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445911037] [2022-11-20 11:20:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:12,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:13,298 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 11:20:13,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:13,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445911037] [2022-11-20 11:20:13,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445911037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:13,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:13,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226482310] [2022-11-20 11:20:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:13,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:20:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:20:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:20:13,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 563 [2022-11-20 11:20:13,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 543 transitions, 1098 flow. Second operand has 4 states, 4 states have (on average 358.5) internal successors, (1434), 4 states have internal predecessors, (1434), 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 11:20:13,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:13,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 563 [2022-11-20 11:20:13,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:18,419 INFO L130 PetriNetUnfolder]: 1599/4216 cut-off events. [2022-11-20 11:20:18,420 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2022-11-20 11:20:18,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 4216 events. 1599/4216 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 35217 event pairs, 880 based on Foata normal form. 196/2476 useless extension candidates. Maximal degree in co-relation 3027. Up to 1380 conditions per place. [2022-11-20 11:20:18,457 INFO L137 encePairwiseOnDemand]: 460/563 looper letters, 246 selfloop transitions, 39 changer transitions 20/626 dead transitions. [2022-11-20 11:20:18,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 626 transitions, 1850 flow [2022-11-20 11:20:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:20:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:20:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2168 transitions. [2022-11-20 11:20:18,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7701598579040853 [2022-11-20 11:20:18,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2168 transitions. [2022-11-20 11:20:18,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2168 transitions. [2022-11-20 11:20:18,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:18,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2168 transitions. [2022-11-20 11:20:18,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 433.6) internal successors, (2168), 5 states have internal predecessors, (2168), 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 11:20:18,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 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 11:20:18,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 563.0) internal successors, (3378), 6 states have internal predecessors, (3378), 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 11:20:18,516 INFO L175 Difference]: Start difference. First operand has 498 places, 543 transitions, 1098 flow. Second operand 5 states and 2168 transitions. [2022-11-20 11:20:18,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 626 transitions, 1850 flow [2022-11-20 11:20:18,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 626 transitions, 1834 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:20:18,539 INFO L231 Difference]: Finished difference. Result has 481 places, 507 transitions, 1244 flow [2022-11-20 11:20:18,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1244, PETRI_PLACES=481, PETRI_TRANSITIONS=507} [2022-11-20 11:20:18,545 INFO L288 CegarLoopForPetriNet]: 498 programPoint places, -17 predicate places. [2022-11-20 11:20:18,545 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 507 transitions, 1244 flow [2022-11-20 11:20:18,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 358.5) internal successors, (1434), 4 states have internal predecessors, (1434), 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 11:20:18,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:18,547 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:18,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:20:18,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2022-11-20 11:20:18,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2051519346, now seen corresponding path program 1 times [2022-11-20 11:20:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:18,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071600967] [2022-11-20 11:20:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:18,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:18,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:18,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071600967] [2022-11-20 11:20:18,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071600967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:18,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678514683] [2022-11-20 11:20:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:18,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:18,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:20:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:19,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:20:19,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:19,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:19,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678514683] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:19,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:19,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:20:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969159916] [2022-11-20 11:20:19,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:20:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:19,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:20:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:20:19,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 563 [2022-11-20 11:20:19,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 507 transitions, 1244 flow. Second operand has 12 states, 12 states have (on average 359.6666666666667) internal successors, (4316), 12 states have internal predecessors, (4316), 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 11:20:19,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:19,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 563 [2022-11-20 11:20:19,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:29,865 INFO L130 PetriNetUnfolder]: 3996/10219 cut-off events. [2022-11-20 11:20:29,865 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2022-11-20 11:20:29,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17332 conditions, 10219 events. 3996/10219 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 94721 event pairs, 2200 based on Foata normal form. 24/5483 useless extension candidates. Maximal degree in co-relation 12724. Up to 1360 conditions per place. [2022-11-20 11:20:29,916 INFO L137 encePairwiseOnDemand]: 500/563 looper letters, 519 selfloop transitions, 172 changer transitions 0/1012 dead transitions. [2022-11-20 11:20:29,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1012 transitions, 3866 flow [2022-11-20 11:20:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:20:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:20:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7141 transitions. [2022-11-20 11:20:29,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7046575883165581 [2022-11-20 11:20:29,936 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7141 transitions. [2022-11-20 11:20:29,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7141 transitions. [2022-11-20 11:20:29,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:29,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7141 transitions. [2022-11-20 11:20:29,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 396.72222222222223) internal successors, (7141), 18 states have internal predecessors, (7141), 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 11:20:29,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 563.0) internal successors, (10697), 19 states have internal predecessors, (10697), 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 11:20:29,984 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 563.0) internal successors, (10697), 19 states have internal predecessors, (10697), 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 11:20:29,984 INFO L175 Difference]: Start difference. First operand has 481 places, 507 transitions, 1244 flow. Second operand 18 states and 7141 transitions. [2022-11-20 11:20:29,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 1012 transitions, 3866 flow [2022-11-20 11:20:29,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 1012 transitions, 3843 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:20:30,007 INFO L231 Difference]: Finished difference. Result has 482 places, 624 transitions, 2251 flow [2022-11-20 11:20:30,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2251, PETRI_PLACES=482, PETRI_TRANSITIONS=624} [2022-11-20 11:20:30,008 INFO L288 CegarLoopForPetriNet]: 498 programPoint places, -16 predicate places. [2022-11-20 11:20:30,009 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 624 transitions, 2251 flow [2022-11-20 11:20:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 359.6666666666667) internal successors, (4316), 12 states have internal predecessors, (4316), 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 11:20:30,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:30,012 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:30,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:30,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2022-11-20 11:20:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash -827404254, now seen corresponding path program 1 times [2022-11-20 11:20:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:30,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223580348] [2022-11-20 11:20:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:30,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:30,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223580348] [2022-11-20 11:20:30,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223580348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:30,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621688382] [2022-11-20 11:20:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:30,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:30,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:20:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:31,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:20:31,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:31,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:20:31,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621688382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:31,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:20:31,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:20:31,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100977010] [2022-11-20 11:20:31,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:31,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:20:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:20:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:20:31,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 563 [2022-11-20 11:20:31,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 624 transitions, 2251 flow. Second operand has 6 states, 6 states have (on average 359.3333333333333) internal successors, (2156), 6 states have internal predecessors, (2156), 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 11:20:31,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:31,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 563 [2022-11-20 11:20:31,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:39,205 INFO L130 PetriNetUnfolder]: 3996/10187 cut-off events. [2022-11-20 11:20:39,205 INFO L131 PetriNetUnfolder]: For 670/670 co-relation queries the response was YES. [2022-11-20 11:20:39,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17483 conditions, 10187 events. 3996/10187 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 94393 event pairs, 2200 based on Foata normal form. 32/5459 useless extension candidates. Maximal degree in co-relation 13865. Up to 5228 conditions per place. [2022-11-20 11:20:39,262 INFO L137 encePairwiseOnDemand]: 516/563 looper letters, 247 selfloop transitions, 123 changer transitions 0/691 dead transitions. [2022-11-20 11:20:39,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 691 transitions, 2992 flow [2022-11-20 11:20:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:20:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:20:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2784 transitions. [2022-11-20 11:20:39,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7064196904339001 [2022-11-20 11:20:39,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2784 transitions. [2022-11-20 11:20:39,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2784 transitions. [2022-11-20 11:20:39,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:39,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2784 transitions. [2022-11-20 11:20:39,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 397.7142857142857) internal successors, (2784), 7 states have internal predecessors, (2784), 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 11:20:39,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 563.0) internal successors, (4504), 8 states have internal predecessors, (4504), 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 11:20:39,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 563.0) internal successors, (4504), 8 states have internal predecessors, (4504), 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 11:20:39,287 INFO L175 Difference]: Start difference. First operand has 482 places, 624 transitions, 2251 flow. Second operand 7 states and 2784 transitions. [2022-11-20 11:20:39,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 691 transitions, 2992 flow [2022-11-20 11:20:39,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 691 transitions, 2666 flow, removed 116 selfloop flow, removed 5 redundant places. [2022-11-20 11:20:39,308 INFO L231 Difference]: Finished difference. Result has 471 places, 592 transitions, 1955 flow [2022-11-20 11:20:39,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1955, PETRI_PLACES=471, PETRI_TRANSITIONS=592} [2022-11-20 11:20:39,313 INFO L288 CegarLoopForPetriNet]: 498 programPoint places, -27 predicate places. [2022-11-20 11:20:39,313 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 592 transitions, 1955 flow [2022-11-20 11:20:39,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 359.3333333333333) internal successors, (2156), 6 states have internal predecessors, (2156), 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 11:20:39,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:39,316 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:39,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:39,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:39,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2022-11-20 11:20:39,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:39,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1871142070, now seen corresponding path program 2 times [2022-11-20 11:20:39,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:39,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363855657] [2022-11-20 11:20:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:39,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:20:39,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:39,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363855657] [2022-11-20 11:20:39,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363855657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:39,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195479685] [2022-11-20 11:20:39,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:20:39,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:39,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:39,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:20:40,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:20:40,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:20:40,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:20:40,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:20:40,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:20:40,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195479685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:40,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:40,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 11:20:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16044730] [2022-11-20 11:20:40,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:40,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:20:40,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:20:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:20:40,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 563 [2022-11-20 11:20:40,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 592 transitions, 1955 flow. Second operand has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 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 11:20:40,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:40,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 563 [2022-11-20 11:20:40,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:52,935 INFO L130 PetriNetUnfolder]: 5588/14015 cut-off events. [2022-11-20 11:20:52,936 INFO L131 PetriNetUnfolder]: For 692/692 co-relation queries the response was YES. [2022-11-20 11:20:52,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23994 conditions, 14015 events. 5588/14015 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 133409 event pairs, 3080 based on Foata normal form. 10/7367 useless extension candidates. Maximal degree in co-relation 19075. Up to 1288 conditions per place. [2022-11-20 11:20:53,014 INFO L137 encePairwiseOnDemand]: 496/563 looper letters, 683 selfloop transitions, 210 changer transitions 0/1174 dead transitions. [2022-11-20 11:20:53,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 1174 transitions, 5007 flow [2022-11-20 11:20:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 11:20:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-20 11:20:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 15485 transitions. [2022-11-20 11:20:53,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5979226195072979 [2022-11-20 11:20:53,049 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 15485 transitions. [2022-11-20 11:20:53,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 15485 transitions. [2022-11-20 11:20:53,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:53,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 15485 transitions. [2022-11-20 11:20:53,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 336.6304347826087) internal successors, (15485), 46 states have internal predecessors, (15485), 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 11:20:53,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 563.0) internal successors, (26461), 47 states have internal predecessors, (26461), 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 11:20:53,152 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 563.0) internal successors, (26461), 47 states have internal predecessors, (26461), 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 11:20:53,152 INFO L175 Difference]: Start difference. First operand has 471 places, 592 transitions, 1955 flow. Second operand 46 states and 15485 transitions. [2022-11-20 11:20:53,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 1174 transitions, 5007 flow [2022-11-20 11:20:53,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1174 transitions, 4769 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 11:20:53,174 INFO L231 Difference]: Finished difference. Result has 501 places, 631 transitions, 2296 flow [2022-11-20 11:20:53,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2296, PETRI_PLACES=501, PETRI_TRANSITIONS=631} [2022-11-20 11:20:53,177 INFO L288 CegarLoopForPetriNet]: 498 programPoint places, 3 predicate places. [2022-11-20 11:20:53,177 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 631 transitions, 2296 flow [2022-11-20 11:20:53,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 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 11:20:53,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:53,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:53,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:53,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:53,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2022-11-20 11:20:53,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1910941104, now seen corresponding path program 1 times [2022-11-20 11:20:53,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:53,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563181311] [2022-11-20 11:20:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:53,629 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 11:20:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:53,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563181311] [2022-11-20 11:20:53,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563181311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:53,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:53,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:20:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437639099] [2022-11-20 11:20:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:20:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:20:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:20:53,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 563 [2022-11-20 11:20:53,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 631 transitions, 2296 flow. Second operand has 5 states, 5 states have (on average 370.2) internal successors, (1851), 5 states have internal predecessors, (1851), 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 11:20:53,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:53,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 563 [2022-11-20 11:20:53,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:02,103 INFO L130 PetriNetUnfolder]: 4793/12124 cut-off events. [2022-11-20 11:21:02,104 INFO L131 PetriNetUnfolder]: For 877/877 co-relation queries the response was YES. [2022-11-20 11:21:02,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20800 conditions, 12124 events. 4793/12124 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 113515 event pairs, 2640 based on Foata normal form. 4/6462 useless extension candidates. Maximal degree in co-relation 19586. Up to 7779 conditions per place. [2022-11-20 11:21:02,164 INFO L137 encePairwiseOnDemand]: 541/563 looper letters, 251 selfloop transitions, 36 changer transitions 0/634 dead transitions. [2022-11-20 11:21:02,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 634 transitions, 2865 flow [2022-11-20 11:21:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:21:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:21:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2317 transitions. [2022-11-20 11:21:02,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6859088217880402 [2022-11-20 11:21:02,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2317 transitions. [2022-11-20 11:21:02,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2317 transitions. [2022-11-20 11:21:02,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:02,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2317 transitions. [2022-11-20 11:21:02,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 386.1666666666667) internal successors, (2317), 6 states have internal predecessors, (2317), 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 11:21:02,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 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 11:21:02,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 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 11:21:02,183 INFO L175 Difference]: Start difference. First operand has 501 places, 631 transitions, 2296 flow. Second operand 6 states and 2317 transitions. [2022-11-20 11:21:02,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 634 transitions, 2865 flow [2022-11-20 11:21:02,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 634 transitions, 2440 flow, removed 25 selfloop flow, removed 16 redundant places. [2022-11-20 11:21:02,197 INFO L231 Difference]: Finished difference. Result has 491 places, 626 transitions, 1926 flow [2022-11-20 11:21:02,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1926, PETRI_PLACES=491, PETRI_TRANSITIONS=626} [2022-11-20 11:21:02,201 INFO L288 CegarLoopForPetriNet]: 498 programPoint places, -7 predicate places. [2022-11-20 11:21:02,201 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 626 transitions, 1926 flow [2022-11-20 11:21:02,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 370.2) internal successors, (1851), 5 states have internal predecessors, (1851), 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 11:21:02,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:02,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:02,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:21:02,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2022-11-20 11:21:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1966004320, now seen corresponding path program 1 times [2022-11-20 11:21:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:02,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451567283] [2022-11-20 11:21:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:21:02,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:02,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451567283] [2022-11-20 11:21:02,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451567283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:21:02,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:21:02,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:21:02,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487371452] [2022-11-20 11:21:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:21:02,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:21:02,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:21:02,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:21:02,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 563 [2022-11-20 11:21:02,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 626 transitions, 1926 flow. Second operand has 5 states, 5 states have (on average 373.4) internal successors, (1867), 5 states have internal predecessors, (1867), 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 11:21:02,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:02,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 563 [2022-11-20 11:21:02,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:21:10,557 INFO L130 PetriNetUnfolder]: 4789/12084 cut-off events. [2022-11-20 11:21:10,557 INFO L131 PetriNetUnfolder]: For 467/467 co-relation queries the response was YES. [2022-11-20 11:21:10,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20595 conditions, 12084 events. 4789/12084 cut-off events. For 467/467 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 112843 event pairs, 2640 based on Foata normal form. 4/6422 useless extension candidates. Maximal degree in co-relation 19385. Up to 7814 conditions per place. [2022-11-20 11:21:10,616 INFO L137 encePairwiseOnDemand]: 541/563 looper letters, 244 selfloop transitions, 38 changer transitions 0/629 dead transitions. [2022-11-20 11:21:10,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 629 transitions, 2488 flow [2022-11-20 11:21:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:21:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:21:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2317 transitions. [2022-11-20 11:21:10,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6859088217880402 [2022-11-20 11:21:10,622 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2317 transitions. [2022-11-20 11:21:10,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2317 transitions. [2022-11-20 11:21:10,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:21:10,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2317 transitions. [2022-11-20 11:21:10,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 386.1666666666667) internal successors, (2317), 6 states have internal predecessors, (2317), 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 11:21:10,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 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 11:21:10,637 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 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 11:21:10,638 INFO L175 Difference]: Start difference. First operand has 491 places, 626 transitions, 1926 flow. Second operand 6 states and 2317 transitions. [2022-11-20 11:21:10,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 629 transitions, 2488 flow [2022-11-20 11:21:10,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 629 transitions, 2426 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:21:10,650 INFO L231 Difference]: Finished difference. Result has 492 places, 621 transitions, 1930 flow [2022-11-20 11:21:10,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1930, PETRI_PLACES=492, PETRI_TRANSITIONS=621} [2022-11-20 11:21:10,654 INFO L288 CegarLoopForPetriNet]: 498 programPoint places, -6 predicate places. [2022-11-20 11:21:10,654 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 621 transitions, 1930 flow [2022-11-20 11:21:10,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 373.4) internal successors, (1867), 5 states have internal predecessors, (1867), 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 11:21:10,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:21:10,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:10,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:21:10,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2022-11-20 11:21:10,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:10,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1821029041, now seen corresponding path program 1 times [2022-11-20 11:21:10,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:10,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975863500] [2022-11-20 11:21:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:21:11,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:11,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975863500] [2022-11-20 11:21:11,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975863500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:21:11,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110563054] [2022-11-20 11:21:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:11,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:21:11,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:21:11,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:21:11,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63aeb2f8-11cb-48a0-8df0-5865edd03b12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:21:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:21:11,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:21:11,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:21:12,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:21:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:21:12,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110563054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:21:12,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:21:12,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:21:12,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313222283] [2022-11-20 11:21:12,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:21:12,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:21:12,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:21:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:21:12,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 563 [2022-11-20 11:21:12,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 621 transitions, 1930 flow. Second operand has 15 states, 15 states have (on average 326.73333333333335) internal successors, (4901), 15 states have internal predecessors, (4901), 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 11:21:12,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:21:12,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 563 [2022-11-20 11:21:12,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand