./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/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_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/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_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:35:43,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:35:43,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:35:43,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:35:43,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:35:43,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:35:43,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:35:43,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:35:43,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:35:43,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:35:43,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:35:43,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:35:43,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:35:43,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:35:43,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:35:43,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:35:43,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:35:43,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:35:43,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:35:43,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:35:43,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:35:43,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:35:43,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:35:43,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:35:43,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:35:43,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:35:43,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:35:43,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:35:43,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:35:43,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:35:43,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:35:43,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:35:43,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:35:43,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:35:43,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:35:43,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:35:43,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:35:43,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:35:43,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:35:43,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:35:43,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:35:43,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:35:43,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:35:43,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:35:43,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:35:43,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:35:43,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:35:43,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:35:43,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:35:43,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:35:43,600 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:35:43,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:35:43,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:35:43,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:35:43,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:35:43,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:35:43,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:35:43,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:35:43,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:35:43,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:35:43,602 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:35:43,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:35:43,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:35:43,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:35:43,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:35:43,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:35:43,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:35:43,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:35:43,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:43,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:35:43,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:35:43,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:35:43,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:35:43,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:35:43,605 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:35:43,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:35:43,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:35:43,605 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_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2022-11-20 10:35:43,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:35:43,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:35:43,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:35:43,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:35:43,912 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:35:43,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/stack-2.i [2022-11-20 10:35:47,094 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:35:47,525 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:35:47,526 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/sv-benchmarks/c/pthread/stack-2.i [2022-11-20 10:35:47,554 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/data/58e3fb650/1b7e741dc2aa4146a85171987c61379e/FLAG02c6222e2 [2022-11-20 10:35:47,582 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/data/58e3fb650/1b7e741dc2aa4146a85171987c61379e [2022-11-20 10:35:47,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:35:47,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:35:47,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:47,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:35:47,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:35:47,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:47" (1/1) ... [2022-11-20 10:35:47,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a6899b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:47, skipping insertion in model container [2022-11-20 10:35:47,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:47" (1/1) ... [2022-11-20 10:35:47,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:35:47,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:35:48,225 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_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-20 10:35:48,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:48,277 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:35:48,358 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_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-20 10:35:48,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:48,441 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:35:48,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48 WrapperNode [2022-11-20 10:35:48,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:48,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:48,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:35:48,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:35:48,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,520 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 167 [2022-11-20 10:35:48,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:48,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:35:48,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:35:48,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:35:48,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,581 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:35:48,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:35:48,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:35:48,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:35:48,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (1/1) ... [2022-11-20 10:35:48,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:48,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:35:48,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:35:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 10:35:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 10:35:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 10:35:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 10:35:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:35:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:35:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:35:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:35:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:35:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:35:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:35:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:35:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:35:48,685 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:35:48,903 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:35:48,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:35:49,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:35:49,451 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:35:49,455 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:35:49,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:49 BoogieIcfgContainer [2022-11-20 10:35:49,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:35:49,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:35:49,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:35:49,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:35:49,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:35:47" (1/3) ... [2022-11-20 10:35:49,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bacaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:49, skipping insertion in model container [2022-11-20 10:35:49,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:48" (2/3) ... [2022-11-20 10:35:49,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bacaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:35:49, skipping insertion in model container [2022-11-20 10:35:49,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:35:49" (3/3) ... [2022-11-20 10:35:49,497 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-11-20 10:35:49,532 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:35:49,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:35:49,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 10:35:49,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:35:49,682 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:35:49,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 197 transitions, 410 flow [2022-11-20 10:35:49,844 INFO L130 PetriNetUnfolder]: 10/195 cut-off events. [2022-11-20 10:35:49,844 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:35:49,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 10/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 503 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-20 10:35:49,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 197 transitions, 410 flow [2022-11-20 10:35:49,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 185 transitions, 379 flow [2022-11-20 10:35:49,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:35:49,883 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;@36555190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:35:49,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 10:35:49,906 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-20 10:35:49,907 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:35:49,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:49,908 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] [2022-11-20 10:35:49,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1702916760, now seen corresponding path program 1 times [2022-11-20 10:35:49,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:49,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783968924] [2022-11-20 10:35:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:49,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:50,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:50,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783968924] [2022-11-20 10:35:50,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783968924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:50,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:50,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83799228] [2022-11-20 10:35:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:50,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:50,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:50,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:50,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:35:50,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 185 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:50,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:50,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:35:50,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:50,798 INFO L130 PetriNetUnfolder]: 28/367 cut-off events. [2022-11-20 10:35:50,798 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-20 10:35:50,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 367 events. 28/367 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1631 event pairs, 10 based on Foata normal form. 41/373 useless extension candidates. Maximal degree in co-relation 394. Up to 36 conditions per place. [2022-11-20 10:35:50,807 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 19 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2022-11-20 10:35:50,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 185 transitions, 434 flow [2022-11-20 10:35:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:35:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-20 10:35:50,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9309644670050762 [2022-11-20 10:35:50,831 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-20 10:35:50,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-20 10:35:50,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:50,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-20 10:35:50,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:50,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:50,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:50,862 INFO L175 Difference]: Start difference. First operand has 182 places, 185 transitions, 379 flow. Second operand 5 states and 917 transitions. [2022-11-20 10:35:50,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 185 transitions, 434 flow [2022-11-20 10:35:50,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 423 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:35:50,875 INFO L231 Difference]: Finished difference. Result has 182 places, 179 transitions, 388 flow [2022-11-20 10:35:50,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=182, PETRI_TRANSITIONS=179} [2022-11-20 10:35:50,914 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 0 predicate places. [2022-11-20 10:35:50,914 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 388 flow [2022-11-20 10:35:50,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:50,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:50,916 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:35:50,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:50,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1214346573, now seen corresponding path program 1 times [2022-11-20 10:35:50,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:50,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594845508] [2022-11-20 10:35:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:50,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:35:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:51,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594845508] [2022-11-20 10:35:51,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594845508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:51,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:51,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:51,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76350098] [2022-11-20 10:35:51,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:51,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:51,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:51,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:51,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:51,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:35:51,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 179 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 178.25) internal successors, (713), 4 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:51,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:35:51,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:51,154 INFO L130 PetriNetUnfolder]: 27/364 cut-off events. [2022-11-20 10:35:51,154 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-20 10:35:51,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 364 events. 27/364 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1586 event pairs, 3 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 395. Up to 21 conditions per place. [2022-11-20 10:35:51,158 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 12 selfloop transitions, 8 changer transitions 0/182 dead transitions. [2022-11-20 10:35:51,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 182 transitions, 435 flow [2022-11-20 10:35:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:35:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 893 transitions. [2022-11-20 10:35:51,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065989847715736 [2022-11-20 10:35:51,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 893 transitions. [2022-11-20 10:35:51,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 893 transitions. [2022-11-20 10:35:51,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:51,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 893 transitions. [2022-11-20 10:35:51,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.6) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,170 INFO L175 Difference]: Start difference. First operand has 182 places, 179 transitions, 388 flow. Second operand 5 states and 893 transitions. [2022-11-20 10:35:51,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 182 transitions, 435 flow [2022-11-20 10:35:51,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 182 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:35:51,176 INFO L231 Difference]: Finished difference. Result has 185 places, 179 transitions, 406 flow [2022-11-20 10:35:51,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=185, PETRI_TRANSITIONS=179} [2022-11-20 10:35:51,177 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 3 predicate places. [2022-11-20 10:35:51,178 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 179 transitions, 406 flow [2022-11-20 10:35:51,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.25) internal successors, (713), 4 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:51,179 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:51,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:35:51,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:51,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1009961337, now seen corresponding path program 1 times [2022-11-20 10:35:51,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:51,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379490234] [2022-11-20 10:35:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:51,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:51,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:51,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379490234] [2022-11-20 10:35:51,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379490234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:51,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537529416] [2022-11-20 10:35:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:51,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:51,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:51,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:51,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:35:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:51,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:35:51,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:51,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:51,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537529416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:51,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:51,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:35:51,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561125658] [2022-11-20 10:35:51,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:51,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:35:51,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:35:51,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 179 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:51,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:35:51,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:51,911 INFO L130 PetriNetUnfolder]: 26/361 cut-off events. [2022-11-20 10:35:51,912 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-20 10:35:51,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 361 events. 26/361 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1549 event pairs, 1 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 407. Up to 24 conditions per place. [2022-11-20 10:35:51,915 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 13 selfloop transitions, 5 changer transitions 0/180 dead transitions. [2022-11-20 10:35:51,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 180 transitions, 444 flow [2022-11-20 10:35:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:35:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:35:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 715 transitions. [2022-11-20 10:35:51,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073604060913706 [2022-11-20 10:35:51,918 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 715 transitions. [2022-11-20 10:35:51,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 715 transitions. [2022-11-20 10:35:51,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:51,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 715 transitions. [2022-11-20 10:35:51,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,924 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,924 INFO L175 Difference]: Start difference. First operand has 185 places, 179 transitions, 406 flow. Second operand 4 states and 715 transitions. [2022-11-20 10:35:51,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 180 transitions, 444 flow [2022-11-20 10:35:51,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 180 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:35:51,929 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 400 flow [2022-11-20 10:35:51,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2022-11-20 10:35:51,931 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 2 predicate places. [2022-11-20 10:35:51,931 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 400 flow [2022-11-20 10:35:51,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:51,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:51,932 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] [2022-11-20 10:35:51,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:35:52,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:52,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:52,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2114847973, now seen corresponding path program 1 times [2022-11-20 10:35:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:52,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845901099] [2022-11-20 10:35:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:52,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:52,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845901099] [2022-11-20 10:35:52,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845901099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:52,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:52,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:35:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583533767] [2022-11-20 10:35:52,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:35:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:35:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:35:52,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 197 [2022-11-20 10:35:52,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:52,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:52,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 197 [2022-11-20 10:35:52,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:53,143 INFO L130 PetriNetUnfolder]: 379/2573 cut-off events. [2022-11-20 10:35:53,144 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2022-11-20 10:35:53,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3509 conditions, 2573 events. 379/2573 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 21496 event pairs, 140 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 2614. Up to 347 conditions per place. [2022-11-20 10:35:53,169 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 58 selfloop transitions, 13 changer transitions 1/227 dead transitions. [2022-11-20 10:35:53,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 227 transitions, 650 flow [2022-11-20 10:35:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:35:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:35:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1405 transitions. [2022-11-20 10:35:53,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891497461928934 [2022-11-20 10:35:53,181 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1405 transitions. [2022-11-20 10:35:53,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1405 transitions. [2022-11-20 10:35:53,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:53,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1405 transitions. [2022-11-20 10:35:53,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.625) internal successors, (1405), 8 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:53,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:53,194 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:53,195 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 400 flow. Second operand 8 states and 1405 transitions. [2022-11-20 10:35:53,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 227 transitions, 650 flow [2022-11-20 10:35:53,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 227 transitions, 640 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:35:53,207 INFO L231 Difference]: Finished difference. Result has 194 places, 189 transitions, 488 flow [2022-11-20 10:35:53,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=488, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2022-11-20 10:35:53,210 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 12 predicate places. [2022-11-20 10:35:53,211 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 488 flow [2022-11-20 10:35:53,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:53,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:53,212 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] [2022-11-20 10:35:53,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:35:53,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1124499463, now seen corresponding path program 1 times [2022-11-20 10:35:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:53,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146600368] [2022-11-20 10:35:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:53,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:53,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146600368] [2022-11-20 10:35:53,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146600368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:53,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:53,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:53,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879675257] [2022-11-20 10:35:53,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:53,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:53,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:53,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:53,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:53,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-20 10:35:53,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:53,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:53,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-20 10:35:53,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:54,056 INFO L130 PetriNetUnfolder]: 208/1841 cut-off events. [2022-11-20 10:35:54,057 INFO L131 PetriNetUnfolder]: For 341/376 co-relation queries the response was YES. [2022-11-20 10:35:54,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 1841 events. 208/1841 cut-off events. For 341/376 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13762 event pairs, 24 based on Foata normal form. 21/1691 useless extension candidates. Maximal degree in co-relation 1978. Up to 335 conditions per place. [2022-11-20 10:35:54,076 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 33 selfloop transitions, 6 changer transitions 0/205 dead transitions. [2022-11-20 10:35:54,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 205 transitions, 611 flow [2022-11-20 10:35:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:35:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 889 transitions. [2022-11-20 10:35:54,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025380710659898 [2022-11-20 10:35:54,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 889 transitions. [2022-11-20 10:35:54,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 889 transitions. [2022-11-20 10:35:54,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:54,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 889 transitions. [2022-11-20 10:35:54,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,089 INFO L175 Difference]: Start difference. First operand has 194 places, 189 transitions, 488 flow. Second operand 5 states and 889 transitions. [2022-11-20 10:35:54,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 205 transitions, 611 flow [2022-11-20 10:35:54,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 205 transitions, 611 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:35:54,097 INFO L231 Difference]: Finished difference. Result has 201 places, 191 transitions, 522 flow [2022-11-20 10:35:54,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=201, PETRI_TRANSITIONS=191} [2022-11-20 10:35:54,103 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 19 predicate places. [2022-11-20 10:35:54,103 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 191 transitions, 522 flow [2022-11-20 10:35:54,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:54,105 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] [2022-11-20 10:35:54,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:35:54,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -708253646, now seen corresponding path program 1 times [2022-11-20 10:35:54,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:54,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010230253] [2022-11-20 10:35:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:54,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:54,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010230253] [2022-11-20 10:35:54,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010230253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:54,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:54,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:54,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973171323] [2022-11-20 10:35:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:54,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:35:54,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:35:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:35:54,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:35:54,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 191 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:54,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:35:54,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:54,608 INFO L130 PetriNetUnfolder]: 70/1226 cut-off events. [2022-11-20 10:35:54,608 INFO L131 PetriNetUnfolder]: For 212/278 co-relation queries the response was YES. [2022-11-20 10:35:54,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 1226 events. 70/1226 cut-off events. For 212/278 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7715 event pairs, 26 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 1468. Up to 102 conditions per place. [2022-11-20 10:35:54,620 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 19 selfloop transitions, 4 changer transitions 0/200 dead transitions. [2022-11-20 10:35:54,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 200 transitions, 592 flow [2022-11-20 10:35:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:35:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:35:54,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 901 transitions. [2022-11-20 10:35:54,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9147208121827411 [2022-11-20 10:35:54,623 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 901 transitions. [2022-11-20 10:35:54,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 901 transitions. [2022-11-20 10:35:54,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:54,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 901 transitions. [2022-11-20 10:35:54,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.2) internal successors, (901), 5 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,628 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,629 INFO L175 Difference]: Start difference. First operand has 201 places, 191 transitions, 522 flow. Second operand 5 states and 901 transitions. [2022-11-20 10:35:54,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 200 transitions, 592 flow [2022-11-20 10:35:54,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 200 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:35:54,636 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 552 flow [2022-11-20 10:35:54,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2022-11-20 10:35:54,639 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 25 predicate places. [2022-11-20 10:35:54,639 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 552 flow [2022-11-20 10:35:54,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:54,642 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] [2022-11-20 10:35:54,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:35:54,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash 954170172, now seen corresponding path program 1 times [2022-11-20 10:35:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:54,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341718011] [2022-11-20 10:35:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:54,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341718011] [2022-11-20 10:35:54,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341718011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:54,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:54,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:35:54,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425322823] [2022-11-20 10:35:54,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:54,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:35:54,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:35:54,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:35:54,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:35:54,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 552 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:54,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:54,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:35:54,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:55,111 INFO L130 PetriNetUnfolder]: 47/1178 cut-off events. [2022-11-20 10:35:55,111 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-20 10:35:55,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 1178 events. 47/1178 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6551 event pairs, 12 based on Foata normal form. 12/1133 useless extension candidates. Maximal degree in co-relation 1406. Up to 42 conditions per place. [2022-11-20 10:35:55,119 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 12 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-20 10:35:55,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 193 transitions, 569 flow [2022-11-20 10:35:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:35:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:35:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2022-11-20 10:35:55,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9187817258883249 [2022-11-20 10:35:55,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 543 transitions. [2022-11-20 10:35:55,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 543 transitions. [2022-11-20 10:35:55,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:55,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 543 transitions. [2022-11-20 10:35:55,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,129 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 552 flow. Second operand 3 states and 543 transitions. [2022-11-20 10:35:55,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 193 transitions, 569 flow [2022-11-20 10:35:55,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 193 transitions, 561 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-20 10:35:55,138 INFO L231 Difference]: Finished difference. Result has 206 places, 191 transitions, 530 flow [2022-11-20 10:35:55,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=206, PETRI_TRANSITIONS=191} [2022-11-20 10:35:55,140 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 24 predicate places. [2022-11-20 10:35:55,140 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 191 transitions, 530 flow [2022-11-20 10:35:55,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:55,143 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] [2022-11-20 10:35:55,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:35:55,144 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash 877020043, now seen corresponding path program 1 times [2022-11-20 10:35:55,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:55,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072154814] [2022-11-20 10:35:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:55,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:55,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072154814] [2022-11-20 10:35:55,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072154814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:55,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:55,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:35:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529350498] [2022-11-20 10:35:55,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:55,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:35:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:55,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:35:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:35:55,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:35:55,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 191 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:55,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:35:55,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:55,858 INFO L130 PetriNetUnfolder]: 105/1515 cut-off events. [2022-11-20 10:35:55,858 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-20 10:35:55,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 1515 events. 105/1515 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8956 event pairs, 38 based on Foata normal form. 6/1453 useless extension candidates. Maximal degree in co-relation 1354. Up to 142 conditions per place. [2022-11-20 10:35:55,868 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 51 selfloop transitions, 9 changer transitions 0/221 dead transitions. [2022-11-20 10:35:55,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 221 transitions, 733 flow [2022-11-20 10:35:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:35:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:35:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1373 transitions. [2022-11-20 10:35:55,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8711928934010152 [2022-11-20 10:35:55,873 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1373 transitions. [2022-11-20 10:35:55,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1373 transitions. [2022-11-20 10:35:55,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:55,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1373 transitions. [2022-11-20 10:35:55,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.625) internal successors, (1373), 8 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,883 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,883 INFO L175 Difference]: Start difference. First operand has 206 places, 191 transitions, 530 flow. Second operand 8 states and 1373 transitions. [2022-11-20 10:35:55,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 221 transitions, 733 flow [2022-11-20 10:35:55,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 221 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:35:55,891 INFO L231 Difference]: Finished difference. Result has 215 places, 195 transitions, 577 flow [2022-11-20 10:35:55,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=215, PETRI_TRANSITIONS=195} [2022-11-20 10:35:55,892 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 33 predicate places. [2022-11-20 10:35:55,893 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 195 transitions, 577 flow [2022-11-20 10:35:55,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:55,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:55,894 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] [2022-11-20 10:35:55,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:35:55,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash -559181662, now seen corresponding path program 1 times [2022-11-20 10:35:55,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:55,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177598712] [2022-11-20 10:35:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:56,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177598712] [2022-11-20 10:35:56,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177598712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:56,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:35:56,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:35:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672192024] [2022-11-20 10:35:56,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:35:56,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:35:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:35:56,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:35:56,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 195 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 166.66666666666666) internal successors, (1000), 6 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:56,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:56,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:35:56,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:56,679 INFO L130 PetriNetUnfolder]: 154/2137 cut-off events. [2022-11-20 10:35:56,679 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2022-11-20 10:35:56,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3314 conditions, 2137 events. 154/2137 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14199 event pairs, 42 based on Foata normal form. 8/2065 useless extension candidates. Maximal degree in co-relation 2681. Up to 198 conditions per place. [2022-11-20 10:35:56,695 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 53 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2022-11-20 10:35:56,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 228 transitions, 830 flow [2022-11-20 10:35:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:35:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:35:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1372 transitions. [2022-11-20 10:35:56,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705583756345178 [2022-11-20 10:35:56,699 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1372 transitions. [2022-11-20 10:35:56,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1372 transitions. [2022-11-20 10:35:56,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:56,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1372 transitions. [2022-11-20 10:35:56,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.5) internal successors, (1372), 8 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:56,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:56,709 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:56,710 INFO L175 Difference]: Start difference. First operand has 215 places, 195 transitions, 577 flow. Second operand 8 states and 1372 transitions. [2022-11-20 10:35:56,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 228 transitions, 830 flow [2022-11-20 10:35:56,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 228 transitions, 822 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:35:56,718 INFO L231 Difference]: Finished difference. Result has 223 places, 204 transitions, 691 flow [2022-11-20 10:35:56,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=223, PETRI_TRANSITIONS=204} [2022-11-20 10:35:56,719 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 41 predicate places. [2022-11-20 10:35:56,720 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 204 transitions, 691 flow [2022-11-20 10:35:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.66666666666666) internal successors, (1000), 6 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:56,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:56,721 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:56,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:35:56,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:56,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:56,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1958684194, now seen corresponding path program 1 times [2022-11-20 10:35:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:56,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121866464] [2022-11-20 10:35:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:56,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121866464] [2022-11-20 10:35:56,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121866464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:56,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464240716] [2022-11-20 10:35:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:56,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:56,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:56,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:35:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:57,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:35:57,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:57,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:57,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464240716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:35:57,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:35:57,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:35:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389802641] [2022-11-20 10:35:57,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:35:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:35:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:35:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:35:57,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-20 10:35:57,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 204 transitions, 691 flow. Second operand has 12 states, 12 states have (on average 173.25) internal successors, (2079), 12 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:57,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:57,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-20 10:35:57,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:35:58,561 INFO L130 PetriNetUnfolder]: 174/2949 cut-off events. [2022-11-20 10:35:58,562 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-11-20 10:35:58,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 2949 events. 174/2949 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 19814 event pairs, 42 based on Foata normal form. 24/2858 useless extension candidates. Maximal degree in co-relation 3847. Up to 117 conditions per place. [2022-11-20 10:35:58,586 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 65 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2022-11-20 10:35:58,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 263 transitions, 1100 flow [2022-11-20 10:35:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:35:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:35:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3147 transitions. [2022-11-20 10:35:58,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874788494077834 [2022-11-20 10:35:58,595 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3147 transitions. [2022-11-20 10:35:58,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3147 transitions. [2022-11-20 10:35:58,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:35:58,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3147 transitions. [2022-11-20 10:35:58,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 174.83333333333334) internal successors, (3147), 18 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:58,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:58,616 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:58,617 INFO L175 Difference]: Start difference. First operand has 223 places, 204 transitions, 691 flow. Second operand 18 states and 3147 transitions. [2022-11-20 10:35:58,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 263 transitions, 1100 flow [2022-11-20 10:35:58,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 263 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:35:58,629 INFO L231 Difference]: Finished difference. Result has 241 places, 220 transitions, 861 flow [2022-11-20 10:35:58,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=861, PETRI_PLACES=241, PETRI_TRANSITIONS=220} [2022-11-20 10:35:58,630 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 59 predicate places. [2022-11-20 10:35:58,631 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 220 transitions, 861 flow [2022-11-20 10:35:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.25) internal successors, (2079), 12 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:58,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:35:58,633 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:58,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:35:58,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:35:58,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:35:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash 589668407, now seen corresponding path program 1 times [2022-11-20 10:35:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:35:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999396692] [2022-11-20 10:35:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:35:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:59,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:35:59,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999396692] [2022-11-20 10:35:59,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999396692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:35:59,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581138492] [2022-11-20 10:35:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:35:59,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:35:59,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:59,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:35:59,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:35:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:35:59,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:35:59,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:35:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:59,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:35:59,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581138492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:35:59,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:35:59,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:35:59,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942769724] [2022-11-20 10:35:59,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:35:59,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:35:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:35:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:35:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:35:59,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-20 10:35:59,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 220 transitions, 861 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:59,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:35:59,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-20 10:35:59,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:00,457 INFO L130 PetriNetUnfolder]: 184/3132 cut-off events. [2022-11-20 10:36:00,458 INFO L131 PetriNetUnfolder]: For 1685/1691 co-relation queries the response was YES. [2022-11-20 10:36:00,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5124 conditions, 3132 events. 184/3132 cut-off events. For 1685/1691 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 21298 event pairs, 43 based on Foata normal form. 30/3037 useless extension candidates. Maximal degree in co-relation 4193. Up to 235 conditions per place. [2022-11-20 10:36:00,482 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 49 selfloop transitions, 19 changer transitions 0/240 dead transitions. [2022-11-20 10:36:00,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 240 transitions, 1086 flow [2022-11-20 10:36:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:36:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:36:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1407 transitions. [2022-11-20 10:36:00,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927664974619289 [2022-11-20 10:36:00,487 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1407 transitions. [2022-11-20 10:36:00,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1407 transitions. [2022-11-20 10:36:00,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:00,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1407 transitions. [2022-11-20 10:36:00,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.875) internal successors, (1407), 8 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:00,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:00,497 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:00,497 INFO L175 Difference]: Start difference. First operand has 241 places, 220 transitions, 861 flow. Second operand 8 states and 1407 transitions. [2022-11-20 10:36:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 240 transitions, 1086 flow [2022-11-20 10:36:00,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 240 transitions, 1029 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-20 10:36:00,512 INFO L231 Difference]: Finished difference. Result has 243 places, 222 transitions, 906 flow [2022-11-20 10:36:00,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=243, PETRI_TRANSITIONS=222} [2022-11-20 10:36:00,513 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 61 predicate places. [2022-11-20 10:36:00,513 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 222 transitions, 906 flow [2022-11-20 10:36:00,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:00,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:00,515 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:00,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:00,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:36:00,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:00,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1720402701, now seen corresponding path program 1 times [2022-11-20 10:36:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:00,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448143077] [2022-11-20 10:36:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:36:00,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:00,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448143077] [2022-11-20 10:36:00,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448143077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:00,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:00,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:00,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223129027] [2022-11-20 10:36:00,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:00,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:00,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:36:00,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 222 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:00,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:00,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:36:00,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:01,849 INFO L130 PetriNetUnfolder]: 130/3005 cut-off events. [2022-11-20 10:36:01,850 INFO L131 PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES. [2022-11-20 10:36:01,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 3005 events. 130/3005 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 19271 event pairs, 26 based on Foata normal form. 24/2914 useless extension candidates. Maximal degree in co-relation 4076. Up to 133 conditions per place. [2022-11-20 10:36:01,877 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 12 selfloop transitions, 8 changer transitions 0/225 dead transitions. [2022-11-20 10:36:01,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 225 transitions, 956 flow [2022-11-20 10:36:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:36:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 893 transitions. [2022-11-20 10:36:01,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065989847715736 [2022-11-20 10:36:01,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 893 transitions. [2022-11-20 10:36:01,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 893 transitions. [2022-11-20 10:36:01,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:01,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 893 transitions. [2022-11-20 10:36:01,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.6) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:01,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:01,885 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:01,885 INFO L175 Difference]: Start difference. First operand has 243 places, 222 transitions, 906 flow. Second operand 5 states and 893 transitions. [2022-11-20 10:36:01,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 225 transitions, 956 flow [2022-11-20 10:36:01,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 225 transitions, 940 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 10:36:01,898 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 910 flow [2022-11-20 10:36:01,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=910, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2022-11-20 10:36:01,900 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 62 predicate places. [2022-11-20 10:36:01,900 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 910 flow [2022-11-20 10:36:01,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:01,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:01,901 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:01,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:36:01,901 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:01,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:01,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1792876711, now seen corresponding path program 1 times [2022-11-20 10:36:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:01,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942358964] [2022-11-20 10:36:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:02,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:02,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942358964] [2022-11-20 10:36:02,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942358964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:02,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147067449] [2022-11-20 10:36:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:02,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:02,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:02,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:02,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:36:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:02,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:36:02,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:02,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:02,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147067449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:02,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:02,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:36:02,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515492310] [2022-11-20 10:36:02,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:02,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:36:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:36:02,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:02,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:36:02,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 910 flow. Second operand has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:02,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:02,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:36:02,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:03,402 INFO L130 PetriNetUnfolder]: 126/2977 cut-off events. [2022-11-20 10:36:03,403 INFO L131 PetriNetUnfolder]: For 1344/1344 co-relation queries the response was YES. [2022-11-20 10:36:03,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 2977 events. 126/2977 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18966 event pairs, 21 based on Foata normal form. 24/2886 useless extension candidates. Maximal degree in co-relation 4131. Up to 130 conditions per place. [2022-11-20 10:36:03,431 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 17 selfloop transitions, 6 changer transitions 0/228 dead transitions. [2022-11-20 10:36:03,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 228 transitions, 976 flow [2022-11-20 10:36:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:36:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:36:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1249 transitions. [2022-11-20 10:36:03,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.90572878897752 [2022-11-20 10:36:03,437 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1249 transitions. [2022-11-20 10:36:03,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1249 transitions. [2022-11-20 10:36:03,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:03,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1249 transitions. [2022-11-20 10:36:03,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.42857142857142) internal successors, (1249), 7 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,447 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,448 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 910 flow. Second operand 7 states and 1249 transitions. [2022-11-20 10:36:03,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 228 transitions, 976 flow [2022-11-20 10:36:03,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 228 transitions, 964 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:36:03,466 INFO L231 Difference]: Finished difference. Result has 246 places, 221 transitions, 906 flow [2022-11-20 10:36:03,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=906, PETRI_PLACES=246, PETRI_TRANSITIONS=221} [2022-11-20 10:36:03,468 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 64 predicate places. [2022-11-20 10:36:03,469 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 221 transitions, 906 flow [2022-11-20 10:36:03,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:03,470 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:03,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:03,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:36:03,675 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1832214020, now seen corresponding path program 1 times [2022-11-20 10:36:03,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:03,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793669691] [2022-11-20 10:36:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:03,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793669691] [2022-11-20 10:36:03,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793669691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348683378] [2022-11-20 10:36:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:03,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:03,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:03,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:04,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:36:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:04,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:36:04,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:04,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:04,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348683378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:04,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:04,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 10:36:04,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990466995] [2022-11-20 10:36:04,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:04,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:36:04,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:36:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:36:04,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:36:04,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 221 transitions, 906 flow. Second operand has 16 states, 16 states have (on average 167.5) internal successors, (2680), 16 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:04,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:04,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:36:04,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:06,053 INFO L130 PetriNetUnfolder]: 249/3508 cut-off events. [2022-11-20 10:36:06,053 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2022-11-20 10:36:06,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5876 conditions, 3508 events. 249/3508 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 25736 event pairs, 62 based on Foata normal form. 38/3408 useless extension candidates. Maximal degree in co-relation 4883. Up to 120 conditions per place. [2022-11-20 10:36:06,085 INFO L137 encePairwiseOnDemand]: 184/197 looper letters, 81 selfloop transitions, 47 changer transitions 0/288 dead transitions. [2022-11-20 10:36:06,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 288 transitions, 1408 flow [2022-11-20 10:36:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:36:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 10:36:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3880 transitions. [2022-11-20 10:36:06,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8563231074817921 [2022-11-20 10:36:06,094 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3880 transitions. [2022-11-20 10:36:06,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3880 transitions. [2022-11-20 10:36:06,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:06,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3880 transitions. [2022-11-20 10:36:06,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 168.69565217391303) internal successors, (3880), 23 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:06,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:06,114 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:06,114 INFO L175 Difference]: Start difference. First operand has 246 places, 221 transitions, 906 flow. Second operand 23 states and 3880 transitions. [2022-11-20 10:36:06,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 288 transitions, 1408 flow [2022-11-20 10:36:06,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 288 transitions, 1397 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 10:36:06,131 INFO L231 Difference]: Finished difference. Result has 267 places, 233 transitions, 1105 flow [2022-11-20 10:36:06,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1105, PETRI_PLACES=267, PETRI_TRANSITIONS=233} [2022-11-20 10:36:06,132 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 85 predicate places. [2022-11-20 10:36:06,132 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 233 transitions, 1105 flow [2022-11-20 10:36:06,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 167.5) internal successors, (2680), 16 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:06,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:06,134 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:06,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:06,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:36:06,340 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:06,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1437204046, now seen corresponding path program 1 times [2022-11-20 10:36:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:06,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226713906] [2022-11-20 10:36:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:06,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226713906] [2022-11-20 10:36:06,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226713906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246778137] [2022-11-20 10:36:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:06,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:06,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:06,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:36:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:06,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:36:06,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:07,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:07,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246778137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:07,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:07,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-20 10:36:07,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126797245] [2022-11-20 10:36:07,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:07,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:36:07,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:07,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:36:07,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:36:07,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:36:07,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 233 transitions, 1105 flow. Second operand has 14 states, 14 states have (on average 168.14285714285714) internal successors, (2354), 14 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:07,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:07,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:36:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:09,257 INFO L130 PetriNetUnfolder]: 396/5336 cut-off events. [2022-11-20 10:36:09,257 INFO L131 PetriNetUnfolder]: For 3610/3610 co-relation queries the response was YES. [2022-11-20 10:36:09,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9133 conditions, 5336 events. 396/5336 cut-off events. For 3610/3610 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 41853 event pairs, 58 based on Foata normal form. 53/5187 useless extension candidates. Maximal degree in co-relation 8106. Up to 266 conditions per place. [2022-11-20 10:36:09,305 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 118 selfloop transitions, 78 changer transitions 0/356 dead transitions. [2022-11-20 10:36:09,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 356 transitions, 2355 flow [2022-11-20 10:36:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:36:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:36:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4061 transitions. [2022-11-20 10:36:09,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8589255499153976 [2022-11-20 10:36:09,313 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4061 transitions. [2022-11-20 10:36:09,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4061 transitions. [2022-11-20 10:36:09,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:09,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4061 transitions. [2022-11-20 10:36:09,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 169.20833333333334) internal successors, (4061), 24 states have internal predecessors, (4061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:09,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 197.0) internal successors, (4925), 25 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:09,338 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 197.0) internal successors, (4925), 25 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:09,339 INFO L175 Difference]: Start difference. First operand has 267 places, 233 transitions, 1105 flow. Second operand 24 states and 4061 transitions. [2022-11-20 10:36:09,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 356 transitions, 2355 flow [2022-11-20 10:36:09,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 356 transitions, 2178 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-11-20 10:36:09,370 INFO L231 Difference]: Finished difference. Result has 294 places, 287 transitions, 1841 flow [2022-11-20 10:36:09,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1841, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-11-20 10:36:09,373 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 112 predicate places. [2022-11-20 10:36:09,373 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 1841 flow [2022-11-20 10:36:09,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 168.14285714285714) internal successors, (2354), 14 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:09,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:09,375 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:36:09,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:09,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:09,582 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1907346759, now seen corresponding path program 2 times [2022-11-20 10:36:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065144419] [2022-11-20 10:36:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:10,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:10,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065144419] [2022-11-20 10:36:10,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065144419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:10,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422727613] [2022-11-20 10:36:10,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:36:10,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:10,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:10,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:10,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:36:10,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:36:10,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:36:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:36:10,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:10,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:11,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422727613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:11,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:11,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-20 10:36:11,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430643331] [2022-11-20 10:36:11,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:11,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:36:11,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:11,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:36:11,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:36:11,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-20 10:36:11,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 1841 flow. Second operand has 24 states, 24 states have (on average 173.625) internal successors, (4167), 24 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:11,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:11,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-20 10:36:11,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:14,561 INFO L130 PetriNetUnfolder]: 464/7961 cut-off events. [2022-11-20 10:36:14,561 INFO L131 PetriNetUnfolder]: For 7969/7972 co-relation queries the response was YES. [2022-11-20 10:36:14,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13927 conditions, 7961 events. 464/7961 cut-off events. For 7969/7972 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 58753 event pairs, 128 based on Foata normal form. 48/7684 useless extension candidates. Maximal degree in co-relation 12894. Up to 405 conditions per place. [2022-11-20 10:36:14,624 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 176 selfloop transitions, 70 changer transitions 0/426 dead transitions. [2022-11-20 10:36:14,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 426 transitions, 3164 flow [2022-11-20 10:36:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 10:36:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 10:36:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5788 transitions. [2022-11-20 10:36:14,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.890324565451469 [2022-11-20 10:36:14,639 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5788 transitions. [2022-11-20 10:36:14,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5788 transitions. [2022-11-20 10:36:14,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:14,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5788 transitions. [2022-11-20 10:36:14,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 175.3939393939394) internal successors, (5788), 33 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:14,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:14,665 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:14,665 INFO L175 Difference]: Start difference. First operand has 294 places, 287 transitions, 1841 flow. Second operand 33 states and 5788 transitions. [2022-11-20 10:36:14,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 426 transitions, 3164 flow [2022-11-20 10:36:14,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 426 transitions, 3036 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-11-20 10:36:14,714 INFO L231 Difference]: Finished difference. Result has 330 places, 321 transitions, 2357 flow [2022-11-20 10:36:14,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2357, PETRI_PLACES=330, PETRI_TRANSITIONS=321} [2022-11-20 10:36:14,715 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 148 predicate places. [2022-11-20 10:36:14,716 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 321 transitions, 2357 flow [2022-11-20 10:36:14,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 173.625) internal successors, (4167), 24 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:14,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:14,718 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:36:14,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:14,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 10:36:14,925 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash 283913968, now seen corresponding path program 1 times [2022-11-20 10:36:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:14,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115214476] [2022-11-20 10:36:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:14,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:36:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:15,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115214476] [2022-11-20 10:36:15,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115214476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:15,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502434178] [2022-11-20 10:36:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:15,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:15,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:15,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:15,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:36:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:36:15,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 10:36:15,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 10:36:16,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502434178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:16,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:16,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-20 10:36:16,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110466838] [2022-11-20 10:36:16,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:16,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:36:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:36:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:36:16,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:36:16,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 321 transitions, 2357 flow. Second operand has 18 states, 18 states have (on average 168.11111111111111) internal successors, (3026), 18 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:16,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:16,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:36:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:21,037 INFO L130 PetriNetUnfolder]: 904/12121 cut-off events. [2022-11-20 10:36:21,037 INFO L131 PetriNetUnfolder]: For 12114/12114 co-relation queries the response was YES. [2022-11-20 10:36:21,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21889 conditions, 12121 events. 904/12121 cut-off events. For 12114/12114 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 109137 event pairs, 211 based on Foata normal form. 23/11670 useless extension candidates. Maximal degree in co-relation 20696. Up to 549 conditions per place. [2022-11-20 10:36:21,140 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 190 selfloop transitions, 204 changer transitions 0/554 dead transitions. [2022-11-20 10:36:21,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 554 transitions, 5037 flow [2022-11-20 10:36:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 10:36:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 10:36:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6406 transitions. [2022-11-20 10:36:21,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557306973016298 [2022-11-20 10:36:21,149 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6406 transitions. [2022-11-20 10:36:21,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6406 transitions. [2022-11-20 10:36:21,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:21,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6406 transitions. [2022-11-20 10:36:21,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 168.57894736842104) internal successors, (6406), 38 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:21,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 197.0) internal successors, (7683), 39 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:21,175 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 197.0) internal successors, (7683), 39 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:21,175 INFO L175 Difference]: Start difference. First operand has 330 places, 321 transitions, 2357 flow. Second operand 38 states and 6406 transitions. [2022-11-20 10:36:21,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 554 transitions, 5037 flow [2022-11-20 10:36:21,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 554 transitions, 4915 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-11-20 10:36:21,253 INFO L231 Difference]: Finished difference. Result has 369 places, 440 transitions, 4412 flow [2022-11-20 10:36:21,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4412, PETRI_PLACES=369, PETRI_TRANSITIONS=440} [2022-11-20 10:36:21,254 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 187 predicate places. [2022-11-20 10:36:21,254 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 440 transitions, 4412 flow [2022-11-20 10:36:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 168.11111111111111) internal successors, (3026), 18 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:21,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:21,256 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 10:36:21,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:36:21,463 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1022558946, now seen corresponding path program 2 times [2022-11-20 10:36:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:21,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756099450] [2022-11-20 10:36:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:22,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:22,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756099450] [2022-11-20 10:36:22,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756099450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:22,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666394518] [2022-11-20 10:36:22,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:36:22,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:22,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:22,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:22,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:36:22,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:36:22,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:36:22,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:36:22,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:22,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:23,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666394518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:23,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:23,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-11-20 10:36:23,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587829036] [2022-11-20 10:36:23,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:23,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:36:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:36:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:36:23,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:36:23,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 440 transitions, 4412 flow. Second operand has 26 states, 26 states have (on average 168.07692307692307) internal successors, (4370), 26 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:23,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:23,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:36:23,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:31,321 INFO L130 PetriNetUnfolder]: 1425/18098 cut-off events. [2022-11-20 10:36:31,322 INFO L131 PetriNetUnfolder]: For 22933/22933 co-relation queries the response was YES. [2022-11-20 10:36:31,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33523 conditions, 18098 events. 1425/18098 cut-off events. For 22933/22933 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 183029 event pairs, 195 based on Foata normal form. 90/17509 useless extension candidates. Maximal degree in co-relation 32292. Up to 790 conditions per place. [2022-11-20 10:36:31,499 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 308 selfloop transitions, 350 changer transitions 0/818 dead transitions. [2022-11-20 10:36:31,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 818 transitions, 9624 flow [2022-11-20 10:36:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 10:36:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 10:36:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8613 transitions. [2022-11-20 10:36:31,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.857270827112571 [2022-11-20 10:36:31,512 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8613 transitions. [2022-11-20 10:36:31,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8613 transitions. [2022-11-20 10:36:31,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:31,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8613 transitions. [2022-11-20 10:36:31,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 168.88235294117646) internal successors, (8613), 51 states have internal predecessors, (8613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:31,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 197.0) internal successors, (10244), 52 states have internal predecessors, (10244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:31,554 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 197.0) internal successors, (10244), 52 states have internal predecessors, (10244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:31,555 INFO L175 Difference]: Start difference. First operand has 369 places, 440 transitions, 4412 flow. Second operand 51 states and 8613 transitions. [2022-11-20 10:36:31,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 818 transitions, 9624 flow [2022-11-20 10:36:31,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 818 transitions, 9390 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-11-20 10:36:31,726 INFO L231 Difference]: Finished difference. Result has 429 places, 626 transitions, 8069 flow [2022-11-20 10:36:31,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8069, PETRI_PLACES=429, PETRI_TRANSITIONS=626} [2022-11-20 10:36:31,727 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 247 predicate places. [2022-11-20 10:36:31,727 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 626 transitions, 8069 flow [2022-11-20 10:36:31,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 168.07692307692307) internal successors, (4370), 26 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:31,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:31,729 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:31,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:31,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 10:36:31,936 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:31,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1819898678, now seen corresponding path program 1 times [2022-11-20 10:36:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:31,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873704390] [2022-11-20 10:36:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:31,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:36:32,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:32,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873704390] [2022-11-20 10:36:32,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873704390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:32,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913233129] [2022-11-20 10:36:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:32,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:32,628 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:32,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:36:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:32,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:36:32,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:36:33,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:36:34,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913233129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:34,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:34,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-11-20 10:36:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585767621] [2022-11-20 10:36:34,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:34,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:36:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:36:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:36:34,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:36:34,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 626 transitions, 8069 flow. Second operand has 24 states, 24 states have (on average 168.5) internal successors, (4044), 24 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:34,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:34,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:36:34,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:36:47,006 INFO L130 PetriNetUnfolder]: 2247/27436 cut-off events. [2022-11-20 10:36:47,006 INFO L131 PetriNetUnfolder]: For 44753/44753 co-relation queries the response was YES. [2022-11-20 10:36:47,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52342 conditions, 27436 events. 2247/27436 cut-off events. For 44753/44753 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 306928 event pairs, 210 based on Foata normal form. 134/26547 useless extension candidates. Maximal degree in co-relation 51448. Up to 1278 conditions per place. [2022-11-20 10:36:47,360 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 196 selfloop transitions, 719 changer transitions 0/1075 dead transitions. [2022-11-20 10:36:47,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1075 transitions, 16180 flow [2022-11-20 10:36:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:36:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:36:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6565 transitions. [2022-11-20 10:36:47,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8544839255499154 [2022-11-20 10:36:47,372 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6565 transitions. [2022-11-20 10:36:47,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6565 transitions. [2022-11-20 10:36:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:36:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6565 transitions. [2022-11-20 10:36:47,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 168.33333333333334) internal successors, (6565), 39 states have internal predecessors, (6565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:47,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 197.0) internal successors, (7880), 40 states have internal predecessors, (7880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:47,400 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 197.0) internal successors, (7880), 40 states have internal predecessors, (7880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:47,400 INFO L175 Difference]: Start difference. First operand has 429 places, 626 transitions, 8069 flow. Second operand 39 states and 6565 transitions. [2022-11-20 10:36:47,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1075 transitions, 16180 flow [2022-11-20 10:36:47,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 1075 transitions, 15008 flow, removed 357 selfloop flow, removed 15 redundant places. [2022-11-20 10:36:47,784 INFO L231 Difference]: Finished difference. Result has 449 places, 969 transitions, 14597 flow [2022-11-20 10:36:47,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14597, PETRI_PLACES=449, PETRI_TRANSITIONS=969} [2022-11-20 10:36:47,786 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 267 predicate places. [2022-11-20 10:36:47,786 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 969 transitions, 14597 flow [2022-11-20 10:36:47,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 168.5) internal successors, (4044), 24 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:47,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:36:47,787 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:47,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:47,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:47,993 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:36:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:47,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1896283279, now seen corresponding path program 1 times [2022-11-20 10:36:47,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:47,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851943967] [2022-11-20 10:36:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:47,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 10:36:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:48,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851943967] [2022-11-20 10:36:48,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851943967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:48,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398327193] [2022-11-20 10:36:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:48,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:48,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:48,691 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:48,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:36:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:49,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:36:49,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 10:36:49,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 10:36:50,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398327193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:50,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:50,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-20 10:36:50,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491703123] [2022-11-20 10:36:50,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:50,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:36:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:36:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:36:50,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-20 10:36:50,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 969 transitions, 14597 flow. Second operand has 22 states, 22 states have (on average 168.45454545454547) internal successors, (3706), 22 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:50,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:36:50,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-20 10:36:50,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:37:10,240 INFO L130 PetriNetUnfolder]: 3421/40419 cut-off events. [2022-11-20 10:37:10,240 INFO L131 PetriNetUnfolder]: For 72732/72732 co-relation queries the response was YES. [2022-11-20 10:37:10,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79299 conditions, 40419 events. 3421/40419 cut-off events. For 72732/72732 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 491636 event pairs, 890 based on Foata normal form. 179/39060 useless extension candidates. Maximal degree in co-relation 78033. Up to 2084 conditions per place. [2022-11-20 10:37:10,718 INFO L137 encePairwiseOnDemand]: 186/197 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1595 dead transitions. [2022-11-20 10:37:10,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1595 transitions, 26507 flow [2022-11-20 10:37:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 10:37:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 10:37:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5580 transitions. [2022-11-20 10:37:10,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8583294877711122 [2022-11-20 10:37:10,727 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5580 transitions. [2022-11-20 10:37:10,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5580 transitions. [2022-11-20 10:37:10,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:37:10,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5580 transitions. [2022-11-20 10:37:10,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 169.0909090909091) internal successors, (5580), 33 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:10,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:10,748 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:10,748 INFO L175 Difference]: Start difference. First operand has 449 places, 969 transitions, 14597 flow. Second operand 33 states and 5580 transitions. [2022-11-20 10:37:10,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1595 transitions, 26507 flow [2022-11-20 10:37:11,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1595 transitions, 25629 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-11-20 10:37:11,282 INFO L231 Difference]: Finished difference. Result has 473 places, 1456 transitions, 25220 flow [2022-11-20 10:37:11,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=13664, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25220, PETRI_PLACES=473, PETRI_TRANSITIONS=1456} [2022-11-20 10:37:11,283 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 291 predicate places. [2022-11-20 10:37:11,283 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 1456 transitions, 25220 flow [2022-11-20 10:37:11,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 168.45454545454547) internal successors, (3706), 22 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:11,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:37:11,285 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:11,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:11,491 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:37:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash -558692246, now seen corresponding path program 2 times [2022-11-20 10:37:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:11,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134322528] [2022-11-20 10:37:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:11,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:37:12,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:12,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134322528] [2022-11-20 10:37:12,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134322528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:12,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12543333] [2022-11-20 10:37:12,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:37:12,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:12,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:12,687 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:12,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06b4d6a-4c87-4bbc-bf09-6d250d7f6ba2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:37:12,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:37:12,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:12,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:37:12,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 10:37:13,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:13,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12543333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:13,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:13,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2022-11-20 10:37:13,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381674939] [2022-11-20 10:37:13,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:13,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:37:13,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:13,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:37:13,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-11-20 10:37:13,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-20 10:37:13,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1456 transitions, 25220 flow. Second operand has 13 states, 13 states have (on average 178.15384615384616) internal successors, (2316), 13 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:13,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:37:13,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-20 10:37:13,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand