./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/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_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/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_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- 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 12:10:58,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:58,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:58,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:58,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:58,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:58,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:58,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:58,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:58,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:58,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:58,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:58,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:58,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:58,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:58,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:58,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:58,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:58,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:58,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:58,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:58,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:58,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:58,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:58,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:58,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:58,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:58,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:58,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:58,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:58,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:58,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:58,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:58,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:58,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:58,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:58,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:58,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:58,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:58,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:58,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:58,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:10:58,538 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:58,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:58,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:58,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:58,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:58,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:58,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:58,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:58,547 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:58,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:58,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:10:58,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:10:58,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:58,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:10:58,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:58,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:58,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:58,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:58,552 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:10:58,552 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:10:58,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:58,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:58,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:58,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:58,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:58,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:58,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:58,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:58,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:58,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:58,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:58,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:58,556 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:58,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:58,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:58,558 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_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-20 12:10:58,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:58,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:58,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:59,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:59,000 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:59,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-20 12:11:02,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:11:03,066 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:11:03,068 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-20 12:11:03,075 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/data/7479e7334/8def1360c8a340e591bbcc642e702dcc/FLAG5d22add0d [2022-11-20 12:11:03,093 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/data/7479e7334/8def1360c8a340e591bbcc642e702dcc [2022-11-20 12:11:03,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:11:03,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:11:03,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:03,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:11:03,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:11:03,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564f842a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03, skipping insertion in model container [2022-11-20 12:11:03,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:11:03,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:11:03,455 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_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-20 12:11:03,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:03,468 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:11:03,507 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_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-20 12:11:03,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:03,527 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:11:03,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03 WrapperNode [2022-11-20 12:11:03,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:03,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:03,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:11:03,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:11:03,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,590 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 269 [2022-11-20 12:11:03,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:03,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:11:03,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:11:03,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:11:03,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,624 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:11:03,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:11:03,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:11:03,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:11:03,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (1/1) ... [2022-11-20 12:11:03,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:11:03,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:03,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:11:03,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09fe7861-d6b5-408b-ae7f-9cd83f3626fb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:11:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:11:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:11:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:11:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:11:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:11:03,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:11:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:11:03,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:11:03,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:11:03,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:11:03,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 12:11:03,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 12:11:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:11:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-20 12:11:03,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-20 12:11:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-20 12:11:03,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-20 12:11:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:11:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:11:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:11:03,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:11:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:11:03,740 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 12:11:03,946 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:11:03,950 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:11:04,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:11:04,729 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:11:04,730 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:11:04,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:04 BoogieIcfgContainer [2022-11-20 12:11:04,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:11:04,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:11:04,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:11:04,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:11:04,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:11:03" (1/3) ... [2022-11-20 12:11:04,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6929d83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:04, skipping insertion in model container [2022-11-20 12:11:04,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:03" (2/3) ... [2022-11-20 12:11:04,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6929d83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:04, skipping insertion in model container [2022-11-20 12:11:04,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:04" (3/3) ... [2022-11-20 12:11:04,746 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-20 12:11:04,765 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:11:04,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:11:04,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 12:11:04,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:11:05,017 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-20 12:11:05,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 250 transitions, 572 flow [2022-11-20 12:11:05,199 INFO L130 PetriNetUnfolder]: 8/222 cut-off events. [2022-11-20 12:11:05,199 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:11:05,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 222 events. 8/222 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 341 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2022-11-20 12:11:05,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 250 transitions, 572 flow [2022-11-20 12:11:05,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 203 transitions, 451 flow [2022-11-20 12:11:05,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:11:05,240 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;@28840397, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:11:05,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-20 12:11:05,275 INFO L130 PetriNetUnfolder]: 3/107 cut-off events. [2022-11-20 12:11:05,276 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:11:05,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:05,277 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 12:11:05,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:11:05,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1122555559, now seen corresponding path program 1 times [2022-11-20 12:11:05,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:05,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763082938] [2022-11-20 12:11:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:06,670 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 12:11:06,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:06,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763082938] [2022-11-20 12:11:06,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763082938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:06,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:06,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:11:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073354631] [2022-11-20 12:11:06,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:06,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:11:06,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:06,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:11:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:11:06,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 254 [2022-11-20 12:11:06,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 451 flow. Second operand has 12 states, 12 states have (on average 171.75) internal successors, (2061), 12 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:06,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:06,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 254 [2022-11-20 12:11:06,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:18,122 INFO L130 PetriNetUnfolder]: 25565/44985 cut-off events. [2022-11-20 12:11:18,124 INFO L131 PetriNetUnfolder]: For 9251/9251 co-relation queries the response was YES. [2022-11-20 12:11:18,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88674 conditions, 44985 events. 25565/44985 cut-off events. For 9251/9251 co-relation queries the response was YES. Maximal size of possible extension queue 1640. Compared 406956 event pairs, 1038 based on Foata normal form. 199/34056 useless extension candidates. Maximal degree in co-relation 87559. Up to 8998 conditions per place. [2022-11-20 12:11:18,903 INFO L137 encePairwiseOnDemand]: 226/254 looper letters, 428 selfloop transitions, 62 changer transitions 1/626 dead transitions. [2022-11-20 12:11:18,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 626 transitions, 2567 flow [2022-11-20 12:11:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:11:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 12:11:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4424 transitions. [2022-11-20 12:11:18,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7572749058541596 [2022-11-20 12:11:18,939 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4424 transitions. [2022-11-20 12:11:18,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4424 transitions. [2022-11-20 12:11:18,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:18,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4424 transitions. [2022-11-20 12:11:18,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 192.34782608695653) internal successors, (4424), 23 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:18,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 254.0) internal successors, (6096), 24 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:18,996 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 254.0) internal successors, (6096), 24 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:18,998 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 451 flow. Second operand 23 states and 4424 transitions. [2022-11-20 12:11:19,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 626 transitions, 2567 flow [2022-11-20 12:11:19,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 626 transitions, 2355 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 12:11:19,135 INFO L231 Difference]: Finished difference. Result has 242 places, 250 transitions, 842 flow [2022-11-20 12:11:19,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=842, PETRI_PLACES=242, PETRI_TRANSITIONS=250} [2022-11-20 12:11:19,151 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 27 predicate places. [2022-11-20 12:11:19,152 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 250 transitions, 842 flow [2022-11-20 12:11:19,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 171.75) internal successors, (2061), 12 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:19,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:19,154 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 12:11:19,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:11:19,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:11:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1122555560, now seen corresponding path program 1 times [2022-11-20 12:11:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:19,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264603999] [2022-11-20 12:11:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:19,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:19,337 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 12:11:19,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:19,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264603999] [2022-11-20 12:11:19,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264603999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:19,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:19,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:11:19,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381524484] [2022-11-20 12:11:19,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:19,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 254 [2022-11-20 12:11:19,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 250 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 192.6) internal successors, (963), 5 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:19,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:19,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 254 [2022-11-20 12:11:19,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:24,364 INFO L130 PetriNetUnfolder]: 12562/23826 cut-off events. [2022-11-20 12:11:24,364 INFO L131 PetriNetUnfolder]: For 50453/50505 co-relation queries the response was YES. [2022-11-20 12:11:24,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59413 conditions, 23826 events. 12562/23826 cut-off events. For 50453/50505 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 218765 event pairs, 6574 based on Foata normal form. 507/21376 useless extension candidates. Maximal degree in co-relation 58286. Up to 11419 conditions per place. [2022-11-20 12:11:24,825 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 111 selfloop transitions, 15 changer transitions 0/278 dead transitions. [2022-11-20 12:11:24,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 278 transitions, 1227 flow [2022-11-20 12:11:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:11:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:11:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1023 transitions. [2022-11-20 12:11:24,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.805511811023622 [2022-11-20 12:11:24,831 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1023 transitions. [2022-11-20 12:11:24,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1023 transitions. [2022-11-20 12:11:24,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:24,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1023 transitions. [2022-11-20 12:11:24,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.6) internal successors, (1023), 5 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:24,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:24,841 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:24,841 INFO L175 Difference]: Start difference. First operand has 242 places, 250 transitions, 842 flow. Second operand 5 states and 1023 transitions. [2022-11-20 12:11:24,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 278 transitions, 1227 flow [2022-11-20 12:11:25,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 278 transitions, 1223 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:11:25,322 INFO L231 Difference]: Finished difference. Result has 242 places, 247 transitions, 850 flow [2022-11-20 12:11:25,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=850, PETRI_PLACES=242, PETRI_TRANSITIONS=247} [2022-11-20 12:11:25,324 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 27 predicate places. [2022-11-20 12:11:25,325 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 247 transitions, 850 flow [2022-11-20 12:11:25,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.6) internal successors, (963), 5 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:25,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:25,336 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] [2022-11-20 12:11:25,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:11:25,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:11:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1626805548, now seen corresponding path program 1 times [2022-11-20 12:11:25,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:25,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927040883] [2022-11-20 12:11:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:25,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:25,583 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 12:11:25,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:25,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927040883] [2022-11-20 12:11:25,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927040883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:25,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:25,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:11:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130690772] [2022-11-20 12:11:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:25,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:25,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 254 [2022-11-20 12:11:25,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 247 transitions, 850 flow. Second operand has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:25,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:25,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 254 [2022-11-20 12:11:25,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:30,228 INFO L130 PetriNetUnfolder]: 10642/20770 cut-off events. [2022-11-20 12:11:30,228 INFO L131 PetriNetUnfolder]: For 46958/47016 co-relation queries the response was YES. [2022-11-20 12:11:30,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51857 conditions, 20770 events. 10642/20770 cut-off events. For 46958/47016 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 190756 event pairs, 4679 based on Foata normal form. 626/18681 useless extension candidates. Maximal degree in co-relation 50850. Up to 8433 conditions per place. [2022-11-20 12:11:30,523 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 114 selfloop transitions, 9 changer transitions 0/275 dead transitions. [2022-11-20 12:11:30,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 275 transitions, 1229 flow [2022-11-20 12:11:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:11:30,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:11:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1022 transitions. [2022-11-20 12:11:30,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8047244094488188 [2022-11-20 12:11:30,528 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1022 transitions. [2022-11-20 12:11:30,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1022 transitions. [2022-11-20 12:11:30,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:30,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1022 transitions. [2022-11-20 12:11:30,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:30,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:30,536 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:30,536 INFO L175 Difference]: Start difference. First operand has 242 places, 247 transitions, 850 flow. Second operand 5 states and 1022 transitions. [2022-11-20 12:11:30,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 275 transitions, 1229 flow [2022-11-20 12:11:30,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 275 transitions, 1192 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:11:30,833 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 815 flow [2022-11-20 12:11:30,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2022-11-20 12:11:30,834 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 25 predicate places. [2022-11-20 12:11:30,835 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 815 flow [2022-11-20 12:11:30,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:30,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:30,836 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] [2022-11-20 12:11:30,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:11:30,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:11:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1366175360, now seen corresponding path program 1 times [2022-11-20 12:11:30,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:30,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349410631] [2022-11-20 12:11:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:30,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:31,122 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 12:11:31,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:31,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349410631] [2022-11-20 12:11:31,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349410631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:31,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:31,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:11:31,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792366659] [2022-11-20 12:11:31,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:11:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:11:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:11:31,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 254 [2022-11-20 12:11:31,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 815 flow. Second operand has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:31,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:31,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 254 [2022-11-20 12:11:31,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:37,089 INFO L130 PetriNetUnfolder]: 15683/29090 cut-off events. [2022-11-20 12:11:37,090 INFO L131 PetriNetUnfolder]: For 69215/71501 co-relation queries the response was YES. [2022-11-20 12:11:37,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72715 conditions, 29090 events. 15683/29090 cut-off events. For 69215/71501 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 271464 event pairs, 548 based on Foata normal form. 720/25803 useless extension candidates. Maximal degree in co-relation 66057. Up to 8394 conditions per place. [2022-11-20 12:11:37,473 INFO L137 encePairwiseOnDemand]: 236/254 looper letters, 285 selfloop transitions, 55 changer transitions 0/497 dead transitions. [2022-11-20 12:11:37,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 497 transitions, 2607 flow [2022-11-20 12:11:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:11:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:11:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2291 transitions. [2022-11-20 12:11:37,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8199713672154617 [2022-11-20 12:11:37,495 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2291 transitions. [2022-11-20 12:11:37,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2291 transitions. [2022-11-20 12:11:37,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:37,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2291 transitions. [2022-11-20 12:11:37,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 208.27272727272728) internal successors, (2291), 11 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:37,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:37,531 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:37,531 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 815 flow. Second operand 11 states and 2291 transitions. [2022-11-20 12:11:37,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 497 transitions, 2607 flow [2022-11-20 12:11:37,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 497 transitions, 2589 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:11:37,910 INFO L231 Difference]: Finished difference. Result has 251 places, 271 transitions, 1152 flow [2022-11-20 12:11:37,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1152, PETRI_PLACES=251, PETRI_TRANSITIONS=271} [2022-11-20 12:11:37,911 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 36 predicate places. [2022-11-20 12:11:37,911 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 271 transitions, 1152 flow [2022-11-20 12:11:37,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:37,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:37,913 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] [2022-11-20 12:11:37,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:11:37,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:11:37,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:37,914 INFO L85 PathProgramCache]: Analyzing trace with hash 794613978, now seen corresponding path program 1 times [2022-11-20 12:11:37,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:37,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816946620] [2022-11-20 12:11:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:37,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:38,140 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 12:11:38,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:38,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816946620] [2022-11-20 12:11:38,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816946620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:38,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:38,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:11:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085195792] [2022-11-20 12:11:38,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:38,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:11:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:11:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:11:38,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 254 [2022-11-20 12:11:38,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 271 transitions, 1152 flow. Second operand has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:38,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:38,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 254 [2022-11-20 12:11:38,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:47,189 INFO L130 PetriNetUnfolder]: 23847/44079 cut-off events. [2022-11-20 12:11:47,189 INFO L131 PetriNetUnfolder]: For 104525/106385 co-relation queries the response was YES. [2022-11-20 12:11:47,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118069 conditions, 44079 events. 23847/44079 cut-off events. For 104525/106385 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 421224 event pairs, 3074 based on Foata normal form. 647/39639 useless extension candidates. Maximal degree in co-relation 116930. Up to 15838 conditions per place. [2022-11-20 12:11:47,756 INFO L137 encePairwiseOnDemand]: 238/254 looper letters, 232 selfloop transitions, 90 changer transitions 0/463 dead transitions. [2022-11-20 12:11:47,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 463 transitions, 2803 flow [2022-11-20 12:11:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:11:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:11:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2150 transitions. [2022-11-20 12:11:47,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7695060844667144 [2022-11-20 12:11:47,765 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2150 transitions. [2022-11-20 12:11:47,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2150 transitions. [2022-11-20 12:11:47,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:47,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2150 transitions. [2022-11-20 12:11:47,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.45454545454547) internal successors, (2150), 11 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:47,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:47,784 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:47,784 INFO L175 Difference]: Start difference. First operand has 251 places, 271 transitions, 1152 flow. Second operand 11 states and 2150 transitions. [2022-11-20 12:11:47,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 463 transitions, 2803 flow [2022-11-20 12:11:48,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 463 transitions, 2791 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:11:48,788 INFO L231 Difference]: Finished difference. Result has 264 places, 305 transitions, 1772 flow [2022-11-20 12:11:48,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=264, PETRI_TRANSITIONS=305} [2022-11-20 12:11:48,790 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 49 predicate places. [2022-11-20 12:11:48,790 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 305 transitions, 1772 flow [2022-11-20 12:11:48,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:48,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:48,792 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] [2022-11-20 12:11:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:11:48,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:11:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 309225694, now seen corresponding path program 1 times [2022-11-20 12:11:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:48,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199439514] [2022-11-20 12:11:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:49,005 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 12:11:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199439514] [2022-11-20 12:11:49,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199439514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:49,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:49,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113537571] [2022-11-20 12:11:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:49,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:49,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 254 [2022-11-20 12:11:49,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 305 transitions, 1772 flow. Second operand has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:49,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:49,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 254 [2022-11-20 12:11:49,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:54,327 INFO L130 PetriNetUnfolder]: 11032/23700 cut-off events. [2022-11-20 12:11:54,328 INFO L131 PetriNetUnfolder]: For 83322/85627 co-relation queries the response was YES. [2022-11-20 12:11:54,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65867 conditions, 23700 events. 11032/23700 cut-off events. For 83322/85627 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 234256 event pairs, 6027 based on Foata normal form. 545/21752 useless extension candidates. Maximal degree in co-relation 64269. Up to 12766 conditions per place. [2022-11-20 12:11:54,673 INFO L137 encePairwiseOnDemand]: 247/254 looper letters, 191 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2022-11-20 12:11:54,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 367 transitions, 2580 flow [2022-11-20 12:11:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:11:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:11:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1080 transitions. [2022-11-20 12:11:54,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2022-11-20 12:11:54,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1080 transitions. [2022-11-20 12:11:54,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1080 transitions. [2022-11-20 12:11:54,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:54,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1080 transitions. [2022-11-20 12:11:54,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:54,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:54,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:54,689 INFO L175 Difference]: Start difference. First operand has 264 places, 305 transitions, 1772 flow. Second operand 5 states and 1080 transitions. [2022-11-20 12:11:54,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 367 transitions, 2580 flow [2022-11-20 12:11:55,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 367 transitions, 2523 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-20 12:11:55,086 INFO L231 Difference]: Finished difference. Result has 261 places, 289 transitions, 1591 flow [2022-11-20 12:11:55,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1591, PETRI_PLACES=261, PETRI_TRANSITIONS=289} [2022-11-20 12:11:55,088 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 46 predicate places. [2022-11-20 12:11:55,088 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 289 transitions, 1591 flow [2022-11-20 12:11:55,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:55,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:55,089 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] [2022-11-20 12:11:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:11:55,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread6Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:11:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash 28443901, now seen corresponding path program 1 times [2022-11-20 12:11:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:55,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343785411] [2022-11-20 12:11:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:55,239 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 12:11:55,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:55,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343785411] [2022-11-20 12:11:55,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343785411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:55,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:55,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036787420] [2022-11-20 12:11:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:11:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:11:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:11:55,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 254 [2022-11-20 12:11:55,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 289 transitions, 1591 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:55,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:55,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 254 [2022-11-20 12:11:55,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:12:01,700 INFO L130 PetriNetUnfolder]: 17040/31397 cut-off events. [2022-11-20 12:12:01,701 INFO L131 PetriNetUnfolder]: For 100339/103603 co-relation queries the response was YES. [2022-11-20 12:12:01,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88562 conditions, 31397 events. 17040/31397 cut-off events. For 100339/103603 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 294160 event pairs, 2251 based on Foata normal form. 760/27414 useless extension candidates. Maximal degree in co-relation 78645. Up to 15872 conditions per place. [2022-11-20 12:12:02,154 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 129 selfloop transitions, 80 changer transitions 0/376 dead transitions. [2022-11-20 12:12:02,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 376 transitions, 2572 flow [2022-11-20 12:12:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:12:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:12:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1083 transitions. [2022-11-20 12:12:02,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852755905511811 [2022-11-20 12:12:02,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1083 transitions. [2022-11-20 12:12:02,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1083 transitions. [2022-11-20 12:12:02,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:12:02,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1083 transitions. [2022-11-20 12:12:02,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,168 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:02,169 INFO L175 Difference]: Start difference. First operand has 261 places, 289 transitions, 1591 flow. Second operand 5 states and 1083 transitions. [2022-11-20 12:12:02,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 376 transitions, 2572 flow [2022-11-20 12:12:03,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 376 transitions, 2554 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:12:03,023 INFO L231 Difference]: Finished difference. Result has 264 places, 306 transitions, 2083 flow [2022-11-20 12:12:03,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2083, PETRI_PLACES=264, PETRI_TRANSITIONS=306} [2022-11-20 12:12:03,024 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 49 predicate places. [2022-11-20 12:12:03,024 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 306 transitions, 2083 flow [2022-11-20 12:12:03,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:03,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:12:03,026 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] [2022-11-20 12:12:03,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:12:03,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-20 12:12:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1040828191, now seen corresponding path program 1 times [2022-11-20 12:12:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:03,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197219082] [2022-11-20 12:12:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:03,292 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 12:12:03,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:03,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197219082] [2022-11-20 12:12:03,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197219082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:03,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:03,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:12:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797996278] [2022-11-20 12:12:03,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:03,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:12:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:03,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:12:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:12:03,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 254 [2022-11-20 12:12:03,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 306 transitions, 2083 flow. Second operand has 10 states, 10 states have (on average 172.6) internal successors, (1726), 10 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:03,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:12:03,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 254 [2022-11-20 12:12:03,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand