./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/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_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/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_10c28f73-c041-4758-9491-554871b4a188/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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:27:28,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:28,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:28,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:28,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:28,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:28,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:28,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:28,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:28,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:28,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:28,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:28,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:28,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:28,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:28,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:28,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:28,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:28,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:28,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:28,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:28,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:28,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:28,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:28,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:28,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:28,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:28,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:28,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:28,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:28,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:28,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:28,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:28,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:28,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:28,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:28,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:28,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:28,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:28,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:28,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:28,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:27:28,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:28,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:28,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:28,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:28,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:28,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:28,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:28,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:28,612 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:28,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:28,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:28,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:28,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:28,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:28,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:28,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:28,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:28,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:28,614 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:27:28,614 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:28,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:28,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:28,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:28,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:28,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:28,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:28,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:28,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:28,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:28,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:28,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:28,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:28,617 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:28,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:28,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:28,618 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_10c28f73-c041-4758-9491-554871b4a188/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2022-11-20 09:27:28,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:28,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:28,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:28,955 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:28,955 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:28,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-20 09:27:32,005 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:32,223 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:32,224 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-20 09:27:32,240 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/data/d36104b2e/38b18eeff125469c877c2ea2ca8fc935/FLAG850b0758e [2022-11-20 09:27:32,257 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/data/d36104b2e/38b18eeff125469c877c2ea2ca8fc935 [2022-11-20 09:27:32,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:32,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:32,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:32,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:32,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:32,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365c79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32, skipping insertion in model container [2022-11-20 09:27:32,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:32,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:32,555 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_10c28f73-c041-4758-9491-554871b4a188/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-20 09:27:32,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:32,579 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:32,635 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_10c28f73-c041-4758-9491-554871b4a188/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-20 09:27:32,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:32,660 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:32,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32 WrapperNode [2022-11-20 09:27:32,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:32,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:32,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:32,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:32,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,750 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-11-20 09:27:32,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:32,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:32,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:32,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:32,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:32,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:32,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:32,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:32,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (1/1) ... [2022-11-20 09:27:32,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:32,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:32,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:32,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:27:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:27:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:27:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:27:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:27:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:27:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:27:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:32,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:32,985 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:27:33,230 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:33,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:34,563 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:34,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:34,595 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 09:27:34,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:34 BoogieIcfgContainer [2022-11-20 09:27:34,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:34,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:34,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:34,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:34,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:32" (1/3) ... [2022-11-20 09:27:34,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453d1f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:34, skipping insertion in model container [2022-11-20 09:27:34,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:32" (2/3) ... [2022-11-20 09:27:34,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453d1f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:34, skipping insertion in model container [2022-11-20 09:27:34,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:34" (3/3) ... [2022-11-20 09:27:34,607 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-11-20 09:27:34,616 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:27:34,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:34,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-11-20 09:27:34,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:27:34,867 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:27:34,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-11-20 09:27:35,633 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-11-20 09:27:35,633 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:27:35,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 967 events. 91/967 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4103 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-11-20 09:27:35,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 889 places, 970 transitions, 1964 flow [2022-11-20 09:27:35,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 866 places, 946 transitions, 1907 flow [2022-11-20 09:27:35,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:35,731 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;@8374b1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:35,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-11-20 09:27:35,750 INFO L130 PetriNetUnfolder]: 3/118 cut-off events. [2022-11-20 09:27:35,750 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:27:35,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:35,751 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] [2022-11-20 09:27:35,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:27:35,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash -514020272, now seen corresponding path program 1 times [2022-11-20 09:27:35,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:35,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802498414] [2022-11-20 09:27:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:36,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:36,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802498414] [2022-11-20 09:27:36,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802498414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:36,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:36,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:36,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336853349] [2022-11-20 09:27:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:36,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:36,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-20 09:27:36,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 866 places, 946 transitions, 1907 flow. Second operand has 4 states, 4 states have (on average 891.5) internal successors, (3566), 4 states have internal predecessors, (3566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:36,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:36,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-20 09:27:36,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:37,724 INFO L130 PetriNetUnfolder]: 107/1669 cut-off events. [2022-11-20 09:27:37,724 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-20 09:27:37,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 1669 events. 107/1669 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10567 event pairs, 0 based on Foata normal form. 104/1497 useless extension candidates. Maximal degree in co-relation 1267. Up to 44 conditions per place. [2022-11-20 09:27:37,816 INFO L137 encePairwiseOnDemand]: 914/970 looper letters, 58 selfloop transitions, 14 changer transitions 6/941 dead transitions. [2022-11-20 09:27:37,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 941 transitions, 2056 flow [2022-11-20 09:27:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4594 transitions. [2022-11-20 09:27:37,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9472164948453609 [2022-11-20 09:27:37,847 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4594 transitions. [2022-11-20 09:27:37,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4594 transitions. [2022-11-20 09:27:37,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:37,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4594 transitions. [2022-11-20 09:27:37,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 918.8) internal successors, (4594), 5 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,896 INFO L175 Difference]: Start difference. First operand has 866 places, 946 transitions, 1907 flow. Second operand 5 states and 4594 transitions. [2022-11-20 09:27:37,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 941 transitions, 2056 flow [2022-11-20 09:27:37,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 941 transitions, 2038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:37,928 INFO L231 Difference]: Finished difference. Result has 868 places, 915 transitions, 1918 flow [2022-11-20 09:27:37,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1918, PETRI_PLACES=868, PETRI_TRANSITIONS=915} [2022-11-20 09:27:37,935 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 2 predicate places. [2022-11-20 09:27:37,935 INFO L495 AbstractCegarLoop]: Abstraction has has 868 places, 915 transitions, 1918 flow [2022-11-20 09:27:37,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 891.5) internal successors, (3566), 4 states have internal predecessors, (3566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:37,939 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:37,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:37,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:27:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash -205722557, now seen corresponding path program 1 times [2022-11-20 09:27:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:37,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247058977] [2022-11-20 09:27:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:38,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:38,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247058977] [2022-11-20 09:27:38,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247058977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:38,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792817353] [2022-11-20 09:27:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:38,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:38,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:38,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:38,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:27:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:38,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:27:38,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:38,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:38,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792817353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:38,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:38,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 09:27:38,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325089062] [2022-11-20 09:27:38,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:38,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:27:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:38,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:27:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:27:38,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-20 09:27:38,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 915 transitions, 1918 flow. Second operand has 12 states, 12 states have (on average 892.6666666666666) internal successors, (10712), 12 states have internal predecessors, (10712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:38,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-20 09:27:38,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:41,740 INFO L130 PetriNetUnfolder]: 266/3946 cut-off events. [2022-11-20 09:27:41,741 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-20 09:27:41,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 3946 events. 266/3946 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 34022 event pairs, 0 based on Foata normal form. 9/3295 useless extension candidates. Maximal degree in co-relation 2984. Up to 35 conditions per place. [2022-11-20 09:27:41,881 INFO L137 encePairwiseOnDemand]: 947/970 looper letters, 109 selfloop transitions, 62 changer transitions 0/1034 dead transitions. [2022-11-20 09:27:41,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 879 places, 1034 transitions, 2600 flow [2022-11-20 09:27:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:27:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:27:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 16200 transitions. [2022-11-20 09:27:41,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2022-11-20 09:27:41,909 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 16200 transitions. [2022-11-20 09:27:41,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 16200 transitions. [2022-11-20 09:27:41,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:41,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 16200 transitions. [2022-11-20 09:27:41,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 900.0) internal successors, (16200), 18 states have internal predecessors, (16200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 970.0) internal successors, (18430), 19 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,992 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 970.0) internal successors, (18430), 19 states have internal predecessors, (18430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,992 INFO L175 Difference]: Start difference. First operand has 868 places, 915 transitions, 1918 flow. Second operand 18 states and 16200 transitions. [2022-11-20 09:27:41,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 879 places, 1034 transitions, 2600 flow [2022-11-20 09:27:41,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1034 transitions, 2592 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:27:42,010 INFO L231 Difference]: Finished difference. Result has 882 places, 957 transitions, 2280 flow [2022-11-20 09:27:42,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2280, PETRI_PLACES=882, PETRI_TRANSITIONS=957} [2022-11-20 09:27:42,012 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 16 predicate places. [2022-11-20 09:27:42,018 INFO L495 AbstractCegarLoop]: Abstraction has has 882 places, 957 transitions, 2280 flow [2022-11-20 09:27:42,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 892.6666666666666) internal successors, (10712), 12 states have internal predecessors, (10712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:42,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:42,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:42,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:42,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:27:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:42,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2082429842, now seen corresponding path program 1 times [2022-11-20 09:27:42,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:42,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980877127] [2022-11-20 09:27:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:42,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,471 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 09:27:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:42,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980877127] [2022-11-20 09:27:42,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980877127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611161184] [2022-11-20 09:27:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:42,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:42,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:42,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:42,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:27:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:27:42,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:42,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:42,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611161184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:42,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:27:42,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:27:42,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568884793] [2022-11-20 09:27:42,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:42,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:42,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 890 out of 970 [2022-11-20 09:27:42,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 882 places, 957 transitions, 2280 flow. Second operand has 6 states, 6 states have (on average 892.3333333333334) internal successors, (5354), 6 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:42,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 890 of 970 [2022-11-20 09:27:42,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:45,335 INFO L130 PetriNetUnfolder]: 266/3934 cut-off events. [2022-11-20 09:27:45,335 INFO L131 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2022-11-20 09:27:45,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4280 conditions, 3934 events. 266/3934 cut-off events. For 205/215 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 33923 event pairs, 0 based on Foata normal form. 12/3286 useless extension candidates. Maximal degree in co-relation 3389. Up to 68 conditions per place. [2022-11-20 09:27:45,685 INFO L137 encePairwiseOnDemand]: 953/970 looper letters, 59 selfloop transitions, 43 changer transitions 0/965 dead transitions. [2022-11-20 09:27:45,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 881 places, 965 transitions, 2455 flow [2022-11-20 09:27:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6302 transitions. [2022-11-20 09:27:45,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9281296023564065 [2022-11-20 09:27:45,702 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6302 transitions. [2022-11-20 09:27:45,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6302 transitions. [2022-11-20 09:27:45,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:45,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6302 transitions. [2022-11-20 09:27:45,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 900.2857142857143) internal successors, (6302), 7 states have internal predecessors, (6302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:45,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:45,736 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:45,737 INFO L175 Difference]: Start difference. First operand has 882 places, 957 transitions, 2280 flow. Second operand 7 states and 6302 transitions. [2022-11-20 09:27:45,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 881 places, 965 transitions, 2455 flow [2022-11-20 09:27:45,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 965 transitions, 2339 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:45,764 INFO L231 Difference]: Finished difference. Result has 876 places, 945 transitions, 2169 flow [2022-11-20 09:27:45,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=902, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2169, PETRI_PLACES=876, PETRI_TRANSITIONS=945} [2022-11-20 09:27:45,768 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 10 predicate places. [2022-11-20 09:27:45,768 INFO L495 AbstractCegarLoop]: Abstraction has has 876 places, 945 transitions, 2169 flow [2022-11-20 09:27:45,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 892.3333333333334) internal successors, (5354), 6 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:45,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:45,771 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:45,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 09:27:45,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 09:27:45,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:27:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash 986700316, now seen corresponding path program 2 times [2022-11-20 09:27:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:45,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063871491] [2022-11-20 09:27:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063871491] [2022-11-20 09:27:46,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063871491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23520378] [2022-11-20 09:27:46,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:27:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:46,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:46,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:46,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:27:46,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:27:46,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:27:46,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:27:46,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 09:27:46,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 09:27:46,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23520378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:46,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:46,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 09:27:46,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160052099] [2022-11-20 09:27:46,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:46,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:27:46,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:46,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:27:46,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:27:46,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-20 09:27:46,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 945 transitions, 2169 flow. Second operand has 18 states, 18 states have (on average 881.8333333333334) internal successors, (15873), 18 states have internal predecessors, (15873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:46,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:46,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-20 09:27:46,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:50,120 INFO L130 PetriNetUnfolder]: 319/4672 cut-off events. [2022-11-20 09:27:50,120 INFO L131 PetriNetUnfolder]: For 189/201 co-relation queries the response was YES. [2022-11-20 09:27:50,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4672 events. 319/4672 cut-off events. For 189/201 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 42129 event pairs, 0 based on Foata normal form. 3/3883 useless extension candidates. Maximal degree in co-relation 3719. Up to 22 conditions per place. [2022-11-20 09:27:50,314 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 127 selfloop transitions, 67 changer transitions 0/1045 dead transitions. [2022-11-20 09:27:50,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 1045 transitions, 2804 flow [2022-11-20 09:27:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:27:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 09:27:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 17757 transitions. [2022-11-20 09:27:50,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153092783505155 [2022-11-20 09:27:50,348 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 17757 transitions. [2022-11-20 09:27:50,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 17757 transitions. [2022-11-20 09:27:50,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:50,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 17757 transitions. [2022-11-20 09:27:50,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 887.85) internal successors, (17757), 20 states have internal predecessors, (17757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:50,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 970.0) internal successors, (20370), 21 states have internal predecessors, (20370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:50,421 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 970.0) internal successors, (20370), 21 states have internal predecessors, (20370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:50,421 INFO L175 Difference]: Start difference. First operand has 876 places, 945 transitions, 2169 flow. Second operand 20 states and 17757 transitions. [2022-11-20 09:27:50,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 1045 transitions, 2804 flow [2022-11-20 09:27:50,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 1045 transitions, 2721 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 09:27:50,441 INFO L231 Difference]: Finished difference. Result has 884 places, 950 transitions, 2243 flow [2022-11-20 09:27:50,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2243, PETRI_PLACES=884, PETRI_TRANSITIONS=950} [2022-11-20 09:27:50,443 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 18 predicate places. [2022-11-20 09:27:50,443 INFO L495 AbstractCegarLoop]: Abstraction has has 884 places, 950 transitions, 2243 flow [2022-11-20 09:27:50,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 881.8333333333334) internal successors, (15873), 18 states have internal predecessors, (15873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:50,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:50,448 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] [2022-11-20 09:27:50,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:50,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:50,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:27:50,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash -468559059, now seen corresponding path program 1 times [2022-11-20 09:27:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:50,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114359460] [2022-11-20 09:27:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:50,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114359460] [2022-11-20 09:27:50,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114359460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:50,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:50,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:50,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979983935] [2022-11-20 09:27:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:50,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:50,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 893 out of 970 [2022-11-20 09:27:50,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 950 transitions, 2243 flow. Second operand has 5 states, 5 states have (on average 897.4) internal successors, (4487), 5 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:50,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:50,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 893 of 970 [2022-11-20 09:27:50,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:52,997 INFO L130 PetriNetUnfolder]: 266/3937 cut-off events. [2022-11-20 09:27:52,997 INFO L131 PetriNetUnfolder]: For 245/255 co-relation queries the response was YES. [2022-11-20 09:27:53,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 3937 events. 266/3937 cut-off events. For 245/255 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 33798 event pairs, 0 based on Foata normal form. 3/3295 useless extension candidates. Maximal degree in co-relation 744. Up to 113 conditions per place. [2022-11-20 09:27:53,153 INFO L137 encePairwiseOnDemand]: 955/970 looper letters, 59 selfloop transitions, 20 changer transitions 0/954 dead transitions. [2022-11-20 09:27:53,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 954 transitions, 2405 flow [2022-11-20 09:27:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:27:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4518 transitions. [2022-11-20 09:27:53,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9315463917525774 [2022-11-20 09:27:53,166 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4518 transitions. [2022-11-20 09:27:53,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4518 transitions. [2022-11-20 09:27:53,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:53,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4518 transitions. [2022-11-20 09:27:53,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 903.6) internal successors, (4518), 5 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:53,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:53,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 970.0) internal successors, (5820), 6 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:53,311 INFO L175 Difference]: Start difference. First operand has 884 places, 950 transitions, 2243 flow. Second operand 5 states and 4518 transitions. [2022-11-20 09:27:53,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 954 transitions, 2405 flow [2022-11-20 09:27:53,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 954 transitions, 2261 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-20 09:27:53,336 INFO L231 Difference]: Finished difference. Result has 874 places, 948 transitions, 2137 flow [2022-11-20 09:27:53,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2137, PETRI_PLACES=874, PETRI_TRANSITIONS=948} [2022-11-20 09:27:53,354 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 8 predicate places. [2022-11-20 09:27:53,354 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 948 transitions, 2137 flow [2022-11-20 09:27:53,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 897.4) internal successors, (4487), 5 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:53,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:53,356 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] [2022-11-20 09:27:53,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:53,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:27:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1070048686, now seen corresponding path program 1 times [2022-11-20 09:27:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:53,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909906876] [2022-11-20 09:27:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:53,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:27:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:53,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909906876] [2022-11-20 09:27:53,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909906876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:53,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018337497] [2022-11-20 09:27:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:53,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:53,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:53,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:53,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:27:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:27:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:27:53,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:27:54,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018337497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:54,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:54,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 09:27:54,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500558053] [2022-11-20 09:27:54,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:54,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:27:54,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:27:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:27:54,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-20 09:27:54,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 948 transitions, 2137 flow. Second operand has 15 states, 15 states have (on average 882.4) internal successors, (13236), 15 states have internal predecessors, (13236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:54,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:54,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-20 09:27:54,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:55,510 INFO L130 PetriNetUnfolder]: 160/2467 cut-off events. [2022-11-20 09:27:55,510 INFO L131 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-11-20 09:27:55,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2777 conditions, 2467 events. 160/2467 cut-off events. For 73/79 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 17976 event pairs, 0 based on Foata normal form. 6/2086 useless extension candidates. Maximal degree in co-relation 2270. Up to 57 conditions per place. [2022-11-20 09:27:55,654 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 74 selfloop transitions, 46 changer transitions 0/971 dead transitions. [2022-11-20 09:27:55,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 971 transitions, 2433 flow [2022-11-20 09:27:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:27:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:27:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 9756 transitions. [2022-11-20 09:27:55,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143392689784442 [2022-11-20 09:27:55,673 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 9756 transitions. [2022-11-20 09:27:55,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 9756 transitions. [2022-11-20 09:27:55,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:55,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 9756 transitions. [2022-11-20 09:27:55,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 886.9090909090909) internal successors, (9756), 11 states have internal predecessors, (9756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:55,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 970.0) internal successors, (11640), 12 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:55,715 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 970.0) internal successors, (11640), 12 states have internal predecessors, (11640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:55,715 INFO L175 Difference]: Start difference. First operand has 874 places, 948 transitions, 2137 flow. Second operand 11 states and 9756 transitions. [2022-11-20 09:27:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 971 transitions, 2433 flow [2022-11-20 09:27:55,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 971 transitions, 2401 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:27:55,733 INFO L231 Difference]: Finished difference. Result has 883 places, 947 transitions, 2250 flow [2022-11-20 09:27:55,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=898, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2250, PETRI_PLACES=883, PETRI_TRANSITIONS=947} [2022-11-20 09:27:55,736 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 17 predicate places. [2022-11-20 09:27:55,736 INFO L495 AbstractCegarLoop]: Abstraction has has 883 places, 947 transitions, 2250 flow [2022-11-20 09:27:55,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 882.4) internal successors, (13236), 15 states have internal predecessors, (13236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:55,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:55,745 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:55,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 09:27:55,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:55,951 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:27:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:55,952 INFO L85 PathProgramCache]: Analyzing trace with hash -316782692, now seen corresponding path program 2 times [2022-11-20 09:27:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:55,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130962585] [2022-11-20 09:27:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:55,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 09:27:56,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:56,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130962585] [2022-11-20 09:27:56,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130962585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:56,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769866804] [2022-11-20 09:27:56,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:27:56,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:56,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:56,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:56,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:27:56,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:27:56,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:27:56,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:27:56,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 09:27:57,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:57,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769866804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:57,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:27:57,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-20 09:27:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260729211] [2022-11-20 09:27:57,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:57,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:57,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:57,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:27:57,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:27:57,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 947 transitions, 2250 flow. Second operand has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:57,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:57,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:27:57,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:01,501 INFO L130 PetriNetUnfolder]: 880/8308 cut-off events. [2022-11-20 09:28:01,502 INFO L131 PetriNetUnfolder]: For 167/173 co-relation queries the response was YES. [2022-11-20 09:28:01,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9896 conditions, 8308 events. 880/8308 cut-off events. For 167/173 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 93801 event pairs, 132 based on Foata normal form. 0/6907 useless extension candidates. Maximal degree in co-relation 3130. Up to 357 conditions per place. [2022-11-20 09:28:01,954 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 61 selfloop transitions, 7 changer transitions 0/964 dead transitions. [2022-11-20 09:28:01,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 964 transitions, 2433 flow [2022-11-20 09:28:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6229 transitions. [2022-11-20 09:28:01,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9173784977908689 [2022-11-20 09:28:01,968 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6229 transitions. [2022-11-20 09:28:01,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6229 transitions. [2022-11-20 09:28:01,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:01,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6229 transitions. [2022-11-20 09:28:01,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.8571428571429) internal successors, (6229), 7 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:01,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:01,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:01,991 INFO L175 Difference]: Start difference. First operand has 883 places, 947 transitions, 2250 flow. Second operand 7 states and 6229 transitions. [2022-11-20 09:28:01,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 964 transitions, 2433 flow [2022-11-20 09:28:01,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 964 transitions, 2362 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-11-20 09:28:02,010 INFO L231 Difference]: Finished difference. Result has 879 places, 946 transitions, 2191 flow [2022-11-20 09:28:02,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2191, PETRI_PLACES=879, PETRI_TRANSITIONS=946} [2022-11-20 09:28:02,012 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-20 09:28:02,012 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 946 transitions, 2191 flow [2022-11-20 09:28:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:02,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:02,014 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:02,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 09:28:02,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 09:28:02,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:02,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:02,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1230326437, now seen corresponding path program 1 times [2022-11-20 09:28:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:02,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560968451] [2022-11-20 09:28:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 09:28:02,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:02,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560968451] [2022-11-20 09:28:02,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560968451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:02,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:02,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27459055] [2022-11-20 09:28:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:02,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:02,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:02,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 879 places, 946 transitions, 2191 flow. Second operand has 4 states, 4 states have (on average 881.75) internal successors, (3527), 4 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:02,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:02,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:02,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:06,915 INFO L130 PetriNetUnfolder]: 961/9898 cut-off events. [2022-11-20 09:28:06,916 INFO L131 PetriNetUnfolder]: For 145/151 co-relation queries the response was YES. [2022-11-20 09:28:07,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11702 conditions, 9898 events. 961/9898 cut-off events. For 145/151 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 116264 event pairs, 180 based on Foata normal form. 18/8257 useless extension candidates. Maximal degree in co-relation 6638. Up to 490 conditions per place. [2022-11-20 09:28:07,359 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 64 selfloop transitions, 8 changer transitions 0/968 dead transitions. [2022-11-20 09:28:07,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 968 transitions, 2385 flow [2022-11-20 09:28:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:07,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3596 transitions. [2022-11-20 09:28:07,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9268041237113402 [2022-11-20 09:28:07,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3596 transitions. [2022-11-20 09:28:07,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3596 transitions. [2022-11-20 09:28:07,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:07,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3596 transitions. [2022-11-20 09:28:07,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 899.0) internal successors, (3596), 4 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:07,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:07,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:07,380 INFO L175 Difference]: Start difference. First operand has 879 places, 946 transitions, 2191 flow. Second operand 4 states and 3596 transitions. [2022-11-20 09:28:07,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 880 places, 968 transitions, 2385 flow [2022-11-20 09:28:07,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 968 transitions, 2375 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:07,398 INFO L231 Difference]: Finished difference. Result has 879 places, 948 transitions, 2227 flow [2022-11-20 09:28:07,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2227, PETRI_PLACES=879, PETRI_TRANSITIONS=948} [2022-11-20 09:28:07,401 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 13 predicate places. [2022-11-20 09:28:07,401 INFO L495 AbstractCegarLoop]: Abstraction has has 879 places, 948 transitions, 2227 flow [2022-11-20 09:28:07,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 881.75) internal successors, (3527), 4 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:07,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:07,402 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:07,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:28:07,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -429009388, now seen corresponding path program 1 times [2022-11-20 09:28:07,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:07,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592616709] [2022-11-20 09:28:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:07,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 09:28:07,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:07,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592616709] [2022-11-20 09:28:07,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592616709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:07,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985022539] [2022-11-20 09:28:07,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:07,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:07,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:07,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:07,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:28:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:07,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:28:07,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 09:28:08,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 09:28:08,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985022539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:08,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:08,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 09:28:08,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389869668] [2022-11-20 09:28:08,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:08,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 09:28:08,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 09:28:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:28:08,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 878 out of 970 [2022-11-20 09:28:08,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 879 places, 948 transitions, 2227 flow. Second operand has 22 states, 22 states have (on average 882.3181818181819) internal successors, (19411), 22 states have internal predecessors, (19411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:08,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:08,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 878 of 970 [2022-11-20 09:28:08,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:09,954 INFO L130 PetriNetUnfolder]: 52/1117 cut-off events. [2022-11-20 09:28:09,954 INFO L131 PetriNetUnfolder]: For 121/131 co-relation queries the response was YES. [2022-11-20 09:28:09,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 1117 events. 52/1117 cut-off events. For 121/131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5091 event pairs, 0 based on Foata normal form. 6/988 useless extension candidates. Maximal degree in co-relation 1291. Up to 33 conditions per place. [2022-11-20 09:28:10,006 INFO L137 encePairwiseOnDemand]: 946/970 looper letters, 83 selfloop transitions, 51 changer transitions 0/986 dead transitions. [2022-11-20 09:28:10,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 986 transitions, 2600 flow [2022-11-20 09:28:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:28:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 09:28:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 15066 transitions. [2022-11-20 09:28:10,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9136446331109763 [2022-11-20 09:28:10,021 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 15066 transitions. [2022-11-20 09:28:10,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 15066 transitions. [2022-11-20 09:28:10,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:10,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 15066 transitions. [2022-11-20 09:28:10,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 886.2352941176471) internal successors, (15066), 17 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:10,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 970.0) internal successors, (17460), 18 states have internal predecessors, (17460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:10,086 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 970.0) internal successors, (17460), 18 states have internal predecessors, (17460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:10,086 INFO L175 Difference]: Start difference. First operand has 879 places, 948 transitions, 2227 flow. Second operand 17 states and 15066 transitions. [2022-11-20 09:28:10,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 986 transitions, 2600 flow [2022-11-20 09:28:10,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 895 places, 986 transitions, 2600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:28:10,110 INFO L231 Difference]: Finished difference. Result has 897 places, 944 transitions, 2332 flow [2022-11-20 09:28:10,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2332, PETRI_PLACES=897, PETRI_TRANSITIONS=944} [2022-11-20 09:28:10,112 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 31 predicate places. [2022-11-20 09:28:10,113 INFO L495 AbstractCegarLoop]: Abstraction has has 897 places, 944 transitions, 2332 flow [2022-11-20 09:28:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 882.3181818181819) internal successors, (19411), 22 states have internal predecessors, (19411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:10,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:10,117 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:10,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:10,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10c28f73-c041-4758-9491-554871b4a188/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 09:28:10,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:10,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash -803555362, now seen corresponding path program 2 times [2022-11-20 09:28:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:10,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504201833] [2022-11-20 09:28:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:10,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:10,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504201833] [2022-11-20 09:28:10,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504201833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:10,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:10,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006208451] [2022-11-20 09:28:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:10,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:10,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:10,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 944 transitions, 2332 flow. Second operand has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:10,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:10,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:10,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:13,512 INFO L130 PetriNetUnfolder]: 904/5188 cut-off events. [2022-11-20 09:28:13,512 INFO L131 PetriNetUnfolder]: For 617/1834 co-relation queries the response was YES. [2022-11-20 09:28:13,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 5188 events. 904/5188 cut-off events. For 617/1834 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 53065 event pairs, 248 based on Foata normal form. 0/4129 useless extension candidates. Maximal degree in co-relation 6369. Up to 491 conditions per place. [2022-11-20 09:28:13,656 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 59 selfloop transitions, 7 changer transitions 0/959 dead transitions. [2022-11-20 09:28:13,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 959 transitions, 2505 flow [2022-11-20 09:28:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6227 transitions. [2022-11-20 09:28:13,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9170839469808542 [2022-11-20 09:28:13,662 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6227 transitions. [2022-11-20 09:28:13,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6227 transitions. [2022-11-20 09:28:13,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:13,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6227 transitions. [2022-11-20 09:28:13,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.5714285714286) internal successors, (6227), 7 states have internal predecessors, (6227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:13,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:13,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:13,680 INFO L175 Difference]: Start difference. First operand has 897 places, 944 transitions, 2332 flow. Second operand 7 states and 6227 transitions. [2022-11-20 09:28:13,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 959 transitions, 2505 flow [2022-11-20 09:28:13,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 959 transitions, 2403 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 09:28:13,699 INFO L231 Difference]: Finished difference. Result has 886 places, 943 transitions, 2242 flow [2022-11-20 09:28:13,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2242, PETRI_PLACES=886, PETRI_TRANSITIONS=943} [2022-11-20 09:28:13,703 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-20 09:28:13,703 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 943 transitions, 2242 flow [2022-11-20 09:28:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:13,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:13,705 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:13,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:28:13,705 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash 859590214, now seen corresponding path program 1 times [2022-11-20 09:28:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:13,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357130986] [2022-11-20 09:28:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:13,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357130986] [2022-11-20 09:28:13,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357130986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:13,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:13,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:13,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318485367] [2022-11-20 09:28:13,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:13,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:13,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:13,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 943 transitions, 2242 flow. Second operand has 4 states, 4 states have (on average 882.0) internal successors, (3528), 4 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:13,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:13,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:13,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:16,639 INFO L130 PetriNetUnfolder]: 519/3742 cut-off events. [2022-11-20 09:28:16,639 INFO L131 PetriNetUnfolder]: For 466/2406 co-relation queries the response was YES. [2022-11-20 09:28:16,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 3742 events. 519/3742 cut-off events. For 466/2406 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 36595 event pairs, 180 based on Foata normal form. 14/3018 useless extension candidates. Maximal degree in co-relation 4516. Up to 426 conditions per place. [2022-11-20 09:28:16,822 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 63 selfloop transitions, 8 changer transitions 0/964 dead transitions. [2022-11-20 09:28:16,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 964 transitions, 2431 flow [2022-11-20 09:28:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3595 transitions. [2022-11-20 09:28:16,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9265463917525774 [2022-11-20 09:28:16,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3595 transitions. [2022-11-20 09:28:16,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3595 transitions. [2022-11-20 09:28:16,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:16,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3595 transitions. [2022-11-20 09:28:16,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 898.75) internal successors, (3595), 4 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:16,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:16,843 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:16,843 INFO L175 Difference]: Start difference. First operand has 886 places, 943 transitions, 2242 flow. Second operand 4 states and 3595 transitions. [2022-11-20 09:28:16,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 964 transitions, 2431 flow [2022-11-20 09:28:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 883 places, 964 transitions, 2421 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:16,867 INFO L231 Difference]: Finished difference. Result has 886 places, 945 transitions, 2278 flow [2022-11-20 09:28:16,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2278, PETRI_PLACES=886, PETRI_TRANSITIONS=945} [2022-11-20 09:28:16,869 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 20 predicate places. [2022-11-20 09:28:16,870 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 945 transitions, 2278 flow [2022-11-20 09:28:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.0) internal successors, (3528), 4 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:16,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:16,871 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:16,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:28:16,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:16,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:16,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1495777572, now seen corresponding path program 1 times [2022-11-20 09:28:16,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:16,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082588979] [2022-11-20 09:28:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:16,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:17,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:17,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082588979] [2022-11-20 09:28:17,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082588979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:17,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:17,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:17,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021898652] [2022-11-20 09:28:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:17,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:17,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:17,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 945 transitions, 2278 flow. Second operand has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:17,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:17,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:17,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:19,448 INFO L130 PetriNetUnfolder]: 366/3998 cut-off events. [2022-11-20 09:28:19,448 INFO L131 PetriNetUnfolder]: For 259/1655 co-relation queries the response was YES. [2022-11-20 09:28:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 3998 events. 366/3998 cut-off events. For 259/1655 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 38983 event pairs, 78 based on Foata normal form. 8/3440 useless extension candidates. Maximal degree in co-relation 4639. Up to 247 conditions per place. [2022-11-20 09:28:19,711 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 61 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-20 09:28:19,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 962 transitions, 2459 flow [2022-11-20 09:28:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6226 transitions. [2022-11-20 09:28:19,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9169366715758468 [2022-11-20 09:28:19,719 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6226 transitions. [2022-11-20 09:28:19,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6226 transitions. [2022-11-20 09:28:19,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:19,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6226 transitions. [2022-11-20 09:28:19,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.4285714285714) internal successors, (6226), 7 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:19,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:19,736 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:19,737 INFO L175 Difference]: Start difference. First operand has 886 places, 945 transitions, 2278 flow. Second operand 7 states and 6226 transitions. [2022-11-20 09:28:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 962 transitions, 2459 flow [2022-11-20 09:28:19,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 962 transitions, 2459 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:28:19,756 INFO L231 Difference]: Finished difference. Result has 891 places, 944 transitions, 2288 flow [2022-11-20 09:28:19,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=938, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2288, PETRI_PLACES=891, PETRI_TRANSITIONS=944} [2022-11-20 09:28:19,758 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 25 predicate places. [2022-11-20 09:28:19,758 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 944 transitions, 2288 flow [2022-11-20 09:28:19,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 881.8333333333334) internal successors, (5291), 6 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:19,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:19,760 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:19,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:28:19,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash -393732346, now seen corresponding path program 1 times [2022-11-20 09:28:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:19,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709870482] [2022-11-20 09:28:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:19,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:19,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709870482] [2022-11-20 09:28:19,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709870482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:19,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:19,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:19,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530363226] [2022-11-20 09:28:19,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:19,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:19,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 944 transitions, 2288 flow. Second operand has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:19,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:19,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:19,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:22,397 INFO L130 PetriNetUnfolder]: 310/4127 cut-off events. [2022-11-20 09:28:22,397 INFO L131 PetriNetUnfolder]: For 238/1880 co-relation queries the response was YES. [2022-11-20 09:28:22,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 4127 events. 310/4127 cut-off events. For 238/1880 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39093 event pairs, 48 based on Foata normal form. 14/3554 useless extension candidates. Maximal degree in co-relation 4634. Up to 204 conditions per place. [2022-11-20 09:28:22,585 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 63 selfloop transitions, 6 changer transitions 0/962 dead transitions. [2022-11-20 09:28:22,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 962 transitions, 2462 flow [2022-11-20 09:28:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3591 transitions. [2022-11-20 09:28:22,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255154639175258 [2022-11-20 09:28:22,591 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3591 transitions. [2022-11-20 09:28:22,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3591 transitions. [2022-11-20 09:28:22,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:22,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3591 transitions. [2022-11-20 09:28:22,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 897.75) internal successors, (3591), 4 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:22,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:22,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:22,605 INFO L175 Difference]: Start difference. First operand has 891 places, 944 transitions, 2288 flow. Second operand 4 states and 3591 transitions. [2022-11-20 09:28:22,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 962 transitions, 2462 flow [2022-11-20 09:28:22,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 962 transitions, 2448 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:28:22,628 INFO L231 Difference]: Finished difference. Result has 889 places, 942 transitions, 2274 flow [2022-11-20 09:28:22,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2274, PETRI_PLACES=889, PETRI_TRANSITIONS=942} [2022-11-20 09:28:22,630 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-20 09:28:22,630 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 942 transitions, 2274 flow [2022-11-20 09:28:22,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:22,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:22,632 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:28:22,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash 679201633, now seen corresponding path program 1 times [2022-11-20 09:28:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:22,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404700446] [2022-11-20 09:28:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:22,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:22,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:22,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404700446] [2022-11-20 09:28:22,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404700446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:22,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:22,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617161540] [2022-11-20 09:28:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:22,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:22,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:22,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 942 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:22,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:22,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:22,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:25,179 INFO L130 PetriNetUnfolder]: 355/3983 cut-off events. [2022-11-20 09:28:25,179 INFO L131 PetriNetUnfolder]: For 235/2413 co-relation queries the response was YES. [2022-11-20 09:28:25,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5074 conditions, 3983 events. 355/3983 cut-off events. For 235/2413 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 38284 event pairs, 108 based on Foata normal form. 12/3437 useless extension candidates. Maximal degree in co-relation 4614. Up to 275 conditions per place. [2022-11-20 09:28:25,410 INFO L137 encePairwiseOnDemand]: 963/970 looper letters, 51 selfloop transitions, 6 changer transitions 0/952 dead transitions. [2022-11-20 09:28:25,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 952 transitions, 2419 flow [2022-11-20 09:28:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6218 transitions. [2022-11-20 09:28:25,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9157584683357879 [2022-11-20 09:28:25,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6218 transitions. [2022-11-20 09:28:25,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6218 transitions. [2022-11-20 09:28:25,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:25,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6218 transitions. [2022-11-20 09:28:25,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 888.2857142857143) internal successors, (6218), 7 states have internal predecessors, (6218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,435 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,436 INFO L175 Difference]: Start difference. First operand has 889 places, 942 transitions, 2274 flow. Second operand 7 states and 6218 transitions. [2022-11-20 09:28:25,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 952 transitions, 2419 flow [2022-11-20 09:28:25,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 952 transitions, 2409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:28:25,454 INFO L231 Difference]: Finished difference. Result has 892 places, 941 transitions, 2274 flow [2022-11-20 09:28:25,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2274, PETRI_PLACES=892, PETRI_TRANSITIONS=941} [2022-11-20 09:28:25,457 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-20 09:28:25,457 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 941 transitions, 2274 flow [2022-11-20 09:28:25,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:25,458 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:28:25,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:25,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash 722228934, now seen corresponding path program 1 times [2022-11-20 09:28:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952716613] [2022-11-20 09:28:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:25,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952716613] [2022-11-20 09:28:25,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952716613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:25,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:25,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816944324] [2022-11-20 09:28:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:25,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:25,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:25,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:25,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 941 transitions, 2274 flow. Second operand has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:25,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:25,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:25,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:30,560 INFO L130 PetriNetUnfolder]: 2551/10141 cut-off events. [2022-11-20 09:28:30,560 INFO L131 PetriNetUnfolder]: For 2156/3011 co-relation queries the response was YES. [2022-11-20 09:28:30,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15029 conditions, 10141 events. 2551/10141 cut-off events. For 2156/3011 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 130579 event pairs, 806 based on Foata normal form. 5/7522 useless extension candidates. Maximal degree in co-relation 14566. Up to 1722 conditions per place. [2022-11-20 09:28:30,751 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 57 selfloop transitions, 7 changer transitions 0/954 dead transitions. [2022-11-20 09:28:30,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 954 transitions, 2434 flow [2022-11-20 09:28:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6225 transitions. [2022-11-20 09:28:30,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9167893961708394 [2022-11-20 09:28:30,757 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6225 transitions. [2022-11-20 09:28:30,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6225 transitions. [2022-11-20 09:28:30,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:30,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6225 transitions. [2022-11-20 09:28:30,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 889.2857142857143) internal successors, (6225), 7 states have internal predecessors, (6225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:30,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:30,773 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 970.0) internal successors, (7760), 8 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:30,774 INFO L175 Difference]: Start difference. First operand has 892 places, 941 transitions, 2274 flow. Second operand 7 states and 6225 transitions. [2022-11-20 09:28:30,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 954 transitions, 2434 flow [2022-11-20 09:28:30,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 954 transitions, 2424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:30,792 INFO L231 Difference]: Finished difference. Result has 893 places, 940 transitions, 2276 flow [2022-11-20 09:28:30,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2276, PETRI_PLACES=893, PETRI_TRANSITIONS=940} [2022-11-20 09:28:30,795 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 27 predicate places. [2022-11-20 09:28:30,795 INFO L495 AbstractCegarLoop]: Abstraction has has 893 places, 940 transitions, 2276 flow [2022-11-20 09:28:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 882.1666666666666) internal successors, (5293), 6 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:30,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:30,796 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:30,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:28:30,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash 689890536, now seen corresponding path program 1 times [2022-11-20 09:28:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:30,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293448057] [2022-11-20 09:28:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:30,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:30,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293448057] [2022-11-20 09:28:30,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293448057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:30,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:30,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796611481] [2022-11-20 09:28:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:30,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:30,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:30,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 940 transitions, 2276 flow. Second operand has 4 states, 4 states have (on average 882.5) internal successors, (3530), 4 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:30,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:30,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:30,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:33,143 INFO L130 PetriNetUnfolder]: 310/4268 cut-off events. [2022-11-20 09:28:33,143 INFO L131 PetriNetUnfolder]: For 171/1933 co-relation queries the response was YES. [2022-11-20 09:28:33,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 4268 events. 310/4268 cut-off events. For 171/1933 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 41082 event pairs, 72 based on Foata normal form. 14/3700 useless extension candidates. Maximal degree in co-relation 4831. Up to 214 conditions per place. [2022-11-20 09:28:33,353 INFO L137 encePairwiseOnDemand]: 962/970 looper letters, 58 selfloop transitions, 6 changer transitions 0/958 dead transitions. [2022-11-20 09:28:33,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 958 transitions, 2443 flow [2022-11-20 09:28:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3586 transitions. [2022-11-20 09:28:33,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9242268041237114 [2022-11-20 09:28:33,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3586 transitions. [2022-11-20 09:28:33,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3586 transitions. [2022-11-20 09:28:33,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:33,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3586 transitions. [2022-11-20 09:28:33,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 896.5) internal successors, (3586), 4 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:33,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:33,374 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:33,375 INFO L175 Difference]: Start difference. First operand has 893 places, 940 transitions, 2276 flow. Second operand 4 states and 3586 transitions. [2022-11-20 09:28:33,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 958 transitions, 2443 flow [2022-11-20 09:28:33,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 888 places, 958 transitions, 2428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:28:33,395 INFO L231 Difference]: Finished difference. Result has 889 places, 940 transitions, 2278 flow [2022-11-20 09:28:33,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2278, PETRI_PLACES=889, PETRI_TRANSITIONS=940} [2022-11-20 09:28:33,397 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 23 predicate places. [2022-11-20 09:28:33,398 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 940 transitions, 2278 flow [2022-11-20 09:28:33,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.5) internal successors, (3530), 4 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:33,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:33,399 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:33,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:28:33,399 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 914263371, now seen corresponding path program 1 times [2022-11-20 09:28:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:33,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774620020] [2022-11-20 09:28:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:33,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:33,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:33,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774620020] [2022-11-20 09:28:33,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774620020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:33,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:33,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422442136] [2022-11-20 09:28:33,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:33,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:33,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:33,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:33,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 940 transitions, 2278 flow. Second operand has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:33,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:33,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:33,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:38,465 INFO L130 PetriNetUnfolder]: 2816/12048 cut-off events. [2022-11-20 09:28:38,465 INFO L131 PetriNetUnfolder]: For 2787/4130 co-relation queries the response was YES. [2022-11-20 09:28:38,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17915 conditions, 12048 events. 2816/12048 cut-off events. For 2787/4130 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 172178 event pairs, 1260 based on Foata normal form. 0/8492 useless extension candidates. Maximal degree in co-relation 17459. Up to 2639 conditions per place. [2022-11-20 09:28:38,861 INFO L137 encePairwiseOnDemand]: 958/970 looper letters, 62 selfloop transitions, 8 changer transitions 0/960 dead transitions. [2022-11-20 09:28:38,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 960 transitions, 2461 flow [2022-11-20 09:28:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3594 transitions. [2022-11-20 09:28:38,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9262886597938145 [2022-11-20 09:28:38,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3594 transitions. [2022-11-20 09:28:38,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3594 transitions. [2022-11-20 09:28:38,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:38,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3594 transitions. [2022-11-20 09:28:38,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 898.5) internal successors, (3594), 4 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 970.0) internal successors, (4850), 5 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,872 INFO L175 Difference]: Start difference. First operand has 889 places, 940 transitions, 2278 flow. Second operand 4 states and 3594 transitions. [2022-11-20 09:28:38,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 960 transitions, 2461 flow [2022-11-20 09:28:38,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 960 transitions, 2457 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:28:38,900 INFO L231 Difference]: Finished difference. Result has 892 places, 942 transitions, 2321 flow [2022-11-20 09:28:38,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=970, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2321, PETRI_PLACES=892, PETRI_TRANSITIONS=942} [2022-11-20 09:28:38,901 INFO L288 CegarLoopForPetriNet]: 866 programPoint places, 26 predicate places. [2022-11-20 09:28:38,902 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 942 transitions, 2321 flow [2022-11-20 09:28:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 882.25) internal successors, (3529), 4 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:38,903 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:38,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:28:38,903 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-20 09:28:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 712962969, now seen corresponding path program 1 times [2022-11-20 09:28:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:38,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806381407] [2022-11-20 09:28:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-11-20 09:28:39,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:39,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806381407] [2022-11-20 09:28:39,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806381407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:39,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:39,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007766552] [2022-11-20 09:28:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:39,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:39,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 880 out of 970 [2022-11-20 09:28:39,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 942 transitions, 2321 flow. Second operand has 6 states, 6 states have (on average 882.0) internal successors, (5292), 6 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:39,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:39,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 880 of 970 [2022-11-20 09:28:39,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand