./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:31:22,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:31:22,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:31:22,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:31:22,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:31:22,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:31:22,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:31:22,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:31:22,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:31:22,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:31:22,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:31:22,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:31:22,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:31:22,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:31:22,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:31:22,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:31:22,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:31:22,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:31:22,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:31:22,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:31:22,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:31:22,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:31:22,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:31:22,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:31:22,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:31:22,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:31:22,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:31:22,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:31:22,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:31:22,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:31:22,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:31:22,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:31:22,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:31:22,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:31:22,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:31:22,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:31:22,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:31:22,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:31:22,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:31:22,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:31:22,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:31:22,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:31:22,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:31:22,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:31:22,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:31:22,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:31:22,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:31:22,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:31:22,631 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:31:22,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:31:22,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:31:22,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:31:22,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:31:22,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:31:22,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:31:22,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:31:22,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:31:22,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:31:22,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:31:22,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:31:22,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:31:22,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:31:22,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:31:22,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:31:22,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:31:22,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:31:22,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:31:22,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:31:22,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:31:22,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:31:22,643 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:31:22,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:31:22,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:31:22,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:31:22,647 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_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2021-10-28 23:31:23,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:31:23,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:31:23,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:31:23,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:31:23,065 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:31:23,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2021-10-28 23:31:23,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/data/0e420b9a0/db64af5f78ba4d789fd923ca68238433/FLAG093e2a2a3 [2021-10-28 23:31:23,764 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:31:23,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2021-10-28 23:31:23,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/data/0e420b9a0/db64af5f78ba4d789fd923ca68238433/FLAG093e2a2a3 [2021-10-28 23:31:24,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/data/0e420b9a0/db64af5f78ba4d789fd923ca68238433 [2021-10-28 23:31:24,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:31:24,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:31:24,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:24,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:31:24,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:31:24,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7167f2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24, skipping insertion in model container [2021-10-28 23:31:24,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:31:24,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:31:24,437 WARN L228 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_d073438a-ec1c-4859-8fdd-d2f161afa98b/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2021-10-28 23:31:24,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:24,462 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:31:24,506 WARN L228 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_d073438a-ec1c-4859-8fdd-d2f161afa98b/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2021-10-28 23:31:24,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:24,535 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:31:24,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24 WrapperNode [2021-10-28 23:31:24,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:24,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:31:24,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:31:24,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:31:24,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:31:24,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:31:24,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:31:24,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:31:24,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:31:24,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:31:24,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:31:24,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:31:24,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (1/1) ... [2021-10-28 23:31:24,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:31:24,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:24,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:24,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:31:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:31:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:31:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:31:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 23:31:24,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 23:31:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 23:31:24,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 23:31:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 23:31:24,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 23:31:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-28 23:31:24,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-28 23:31:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:31:24,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:31:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:31:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:31:24,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:31:24,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:31:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:31:24,828 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:31:26,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:31:26,417 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-10-28 23:31:26,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:26 BoogieIcfgContainer [2021-10-28 23:31:26,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:31:26,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:31:26,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:31:26,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:31:26,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:31:24" (1/3) ... [2021-10-28 23:31:26,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba8ad74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:31:26, skipping insertion in model container [2021-10-28 23:31:26,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:24" (2/3) ... [2021-10-28 23:31:26,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba8ad74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:31:26, skipping insertion in model container [2021-10-28 23:31:26,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:26" (3/3) ... [2021-10-28 23:31:26,433 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2021-10-28 23:31:26,440 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:31:26,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:31:26,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:31:26,441 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:31:26,496 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,497 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,497 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,501 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,502 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,503 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,503 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,504 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,504 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,505 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,505 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,505 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,506 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,506 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,506 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,507 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,507 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,507 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,508 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,508 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,508 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,508 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,509 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,509 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,509 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,510 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,510 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,510 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,510 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,512 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,512 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,512 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,513 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,513 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,514 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,514 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,514 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,515 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,515 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,515 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,516 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,516 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,516 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,517 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,517 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,517 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,517 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,518 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,518 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,518 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,518 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,519 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,519 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,519 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,520 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,520 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,520 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,521 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,521 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,521 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,521 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,522 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,522 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,523 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,523 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,524 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,524 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,525 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,525 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,525 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,526 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,526 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,526 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,526 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,527 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,527 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,527 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,528 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,528 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,528 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,529 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,529 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,529 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,529 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,530 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,530 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,530 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,531 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,531 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,531 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,531 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,532 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,532 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,532 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,533 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,533 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,540 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,543 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,543 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,544 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,544 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,544 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,544 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,545 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,545 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,545 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,545 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,546 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,546 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,546 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,548 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,549 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,550 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,551 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,553 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,553 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,553 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,553 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,554 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,554 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,554 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,555 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,555 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,555 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,555 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,556 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,556 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:26,567 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-28 23:31:26,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:31:26,639 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:31:26,640 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 23:31:26,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 232 places, 241 transitions, 514 flow [2021-10-28 23:31:26,865 INFO L129 PetriNetUnfolder]: 22/237 cut-off events. [2021-10-28 23:31:26,866 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:31:26,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 237 events. 22/237 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 139 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 201. Up to 2 conditions per place. [2021-10-28 23:31:26,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 241 transitions, 514 flow [2021-10-28 23:31:26,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 225 transitions, 474 flow [2021-10-28 23:31:26,999 INFO L129 PetriNetUnfolder]: 22/224 cut-off events. [2021-10-28 23:31:27,000 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:31:27,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:27,001 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:27,002 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1099379779, now seen corresponding path program 1 times [2021-10-28 23:31:27,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:27,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301003522] [2021-10-28 23:31:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:27,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:27,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:27,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301003522] [2021-10-28 23:31:27,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301003522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:27,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:27,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:31:27,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027199596] [2021-10-28 23:31:27,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:31:27,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:31:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:31:27,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 241 [2021-10-28 23:31:27,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 474 flow. Second operand has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:27,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:27,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 241 [2021-10-28 23:31:27,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:27,470 INFO L129 PetriNetUnfolder]: 7/210 cut-off events. [2021-10-28 23:31:27,470 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 23:31:27,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 210 events. 7/210 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 119 event pairs, 0 based on Foata normal form. 15/210 useless extension candidates. Maximal degree in co-relation 222. Up to 2 conditions per place. [2021-10-28 23:31:27,475 INFO L132 encePairwiseOnDemand]: 226/241 looper letters, 0 selfloop transitions, 0 changer transitions 8/210 dead transitions. [2021-10-28 23:31:27,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 210 transitions, 444 flow [2021-10-28 23:31:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:31:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 23:31:27,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 465 transitions. [2021-10-28 23:31:27,495 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9647302904564315 [2021-10-28 23:31:27,496 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 465 transitions. [2021-10-28 23:31:27,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 465 transitions. [2021-10-28 23:31:27,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:27,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 465 transitions. [2021-10-28 23:31:27,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 232.5) internal successors, (465), 2 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:27,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:27,523 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:27,526 INFO L186 Difference]: Start difference. First operand has 216 places, 225 transitions, 474 flow. Second operand 2 states and 465 transitions. [2021-10-28 23:31:27,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 210 transitions, 444 flow [2021-10-28 23:31:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 210 transitions, 428 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-10-28 23:31:27,542 INFO L242 Difference]: Finished difference. Result has 209 places, 202 transitions, 412 flow [2021-10-28 23:31:27,546 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=412, PETRI_PLACES=209, PETRI_TRANSITIONS=202} [2021-10-28 23:31:27,547 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, -7 predicate places. [2021-10-28 23:31:27,547 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 202 transitions, 412 flow [2021-10-28 23:31:27,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:27,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:27,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:27,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:31:27,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 791656769, now seen corresponding path program 1 times [2021-10-28 23:31:27,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:27,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544762066] [2021-10-28 23:31:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:27,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:28,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:28,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544762066] [2021-10-28 23:31:28,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544762066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:28,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:28,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:31:28,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871932876] [2021-10-28 23:31:28,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:31:28,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:31:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:31:28,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 241 [2021-10-28 23:31:28,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 202 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 188.6) internal successors, (943), 5 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:28,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 241 [2021-10-28 23:31:28,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:28,528 INFO L129 PetriNetUnfolder]: 12/231 cut-off events. [2021-10-28 23:31:28,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:31:28,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 231 events. 12/231 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 182 event pairs, 0 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 279. Up to 29 conditions per place. [2021-10-28 23:31:28,535 INFO L132 encePairwiseOnDemand]: 235/241 looper letters, 34 selfloop transitions, 3 changer transitions 3/207 dead transitions. [2021-10-28 23:31:28,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 207 transitions, 502 flow [2021-10-28 23:31:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:31:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-28 23:31:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 951 transitions. [2021-10-28 23:31:28,546 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7892116182572614 [2021-10-28 23:31:28,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 951 transitions. [2021-10-28 23:31:28,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 951 transitions. [2021-10-28 23:31:28,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:28,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 951 transitions. [2021-10-28 23:31:28,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.2) internal successors, (951), 5 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,562 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,562 INFO L186 Difference]: Start difference. First operand has 209 places, 202 transitions, 412 flow. Second operand 5 states and 951 transitions. [2021-10-28 23:31:28,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 207 transitions, 502 flow [2021-10-28 23:31:28,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 207 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 23:31:28,583 INFO L242 Difference]: Finished difference. Result has 208 places, 204 transitions, 435 flow [2021-10-28 23:31:28,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2021-10-28 23:31:28,584 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, -8 predicate places. [2021-10-28 23:31:28,585 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 435 flow [2021-10-28 23:31:28,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.6) internal successors, (943), 5 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:28,587 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:28,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:31:28,588 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:28,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash -501971566, now seen corresponding path program 1 times [2021-10-28 23:31:28,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:28,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660005481] [2021-10-28 23:31:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:28,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:28,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:28,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660005481] [2021-10-28 23:31:28,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660005481] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:28,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:28,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:31:28,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612100256] [2021-10-28 23:31:28,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:31:28,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:31:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:31:28,750 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 241 [2021-10-28 23:31:28,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:28,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 241 [2021-10-28 23:31:28,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:28,844 INFO L129 PetriNetUnfolder]: 16/268 cut-off events. [2021-10-28 23:31:28,844 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2021-10-28 23:31:28,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 268 events. 16/268 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 353 event pairs, 0 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2021-10-28 23:31:28,849 INFO L132 encePairwiseOnDemand]: 238/241 looper letters, 9 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2021-10-28 23:31:28,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 461 flow [2021-10-28 23:31:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:31:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:31:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2021-10-28 23:31:28,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9156293222683264 [2021-10-28 23:31:28,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2021-10-28 23:31:28,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2021-10-28 23:31:28,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:28,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2021-10-28 23:31:28,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,880 INFO L186 Difference]: Start difference. First operand has 208 places, 204 transitions, 435 flow. Second operand 3 states and 662 transitions. [2021-10-28 23:31:28,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 461 flow [2021-10-28 23:31:28,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 206 transitions, 454 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-28 23:31:28,889 INFO L242 Difference]: Finished difference. Result has 206 places, 205 transitions, 442 flow [2021-10-28 23:31:28,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=206, PETRI_TRANSITIONS=205} [2021-10-28 23:31:28,890 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, -10 predicate places. [2021-10-28 23:31:28,890 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 205 transitions, 442 flow [2021-10-28 23:31:28,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:28,892 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:28,892 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:28,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:31:28,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1505074654, now seen corresponding path program 1 times [2021-10-28 23:31:28,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:28,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576922103] [2021-10-28 23:31:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:28,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:29,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:29,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576922103] [2021-10-28 23:31:29,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576922103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:29,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:29,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:31:29,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637555818] [2021-10-28 23:31:29,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:31:29,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:29,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:31:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:31:29,098 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 241 [2021-10-28 23:31:29,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 205 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:29,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 241 [2021-10-28 23:31:29,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:29,212 INFO L129 PetriNetUnfolder]: 19/294 cut-off events. [2021-10-28 23:31:29,213 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-10-28 23:31:29,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 294 events. 19/294 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 478 event pairs, 0 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 339. Up to 19 conditions per place. [2021-10-28 23:31:29,217 INFO L132 encePairwiseOnDemand]: 238/241 looper letters, 9 selfloop transitions, 2 changer transitions 0/207 dead transitions. [2021-10-28 23:31:29,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 207 transitions, 468 flow [2021-10-28 23:31:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:31:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 23:31:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2021-10-28 23:31:29,222 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9156293222683264 [2021-10-28 23:31:29,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2021-10-28 23:31:29,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2021-10-28 23:31:29,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:29,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2021-10-28 23:31:29,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,231 INFO L186 Difference]: Start difference. First operand has 206 places, 205 transitions, 442 flow. Second operand 3 states and 662 transitions. [2021-10-28 23:31:29,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 207 transitions, 468 flow [2021-10-28 23:31:29,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 207 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:31:29,239 INFO L242 Difference]: Finished difference. Result has 208 places, 206 transitions, 454 flow [2021-10-28 23:31:29,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=208, PETRI_TRANSITIONS=206} [2021-10-28 23:31:29,240 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, -8 predicate places. [2021-10-28 23:31:29,240 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 206 transitions, 454 flow [2021-10-28 23:31:29,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,242 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:29,242 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:29,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:31:29,243 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:29,243 INFO L85 PathProgramCache]: Analyzing trace with hash -162507573, now seen corresponding path program 1 times [2021-10-28 23:31:29,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:29,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132613636] [2021-10-28 23:31:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:29,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:31:29,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:29,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132613636] [2021-10-28 23:31:29,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132613636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:29,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:29,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:31:29,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335969927] [2021-10-28 23:31:29,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:31:29,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:31:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:31:29,464 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 241 [2021-10-28 23:31:29,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 206 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:29,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 241 [2021-10-28 23:31:29,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:29,831 INFO L129 PetriNetUnfolder]: 20/446 cut-off events. [2021-10-28 23:31:29,831 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2021-10-28 23:31:29,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 446 events. 20/446 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1160 event pairs, 0 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 568. Up to 33 conditions per place. [2021-10-28 23:31:29,839 INFO L132 encePairwiseOnDemand]: 231/241 looper letters, 60 selfloop transitions, 11 changer transitions 0/235 dead transitions. [2021-10-28 23:31:29,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 235 transitions, 654 flow [2021-10-28 23:31:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:31:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:31:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1735 transitions. [2021-10-28 23:31:29,854 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7999077916090365 [2021-10-28 23:31:29,854 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1735 transitions. [2021-10-28 23:31:29,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1735 transitions. [2021-10-28 23:31:29,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:29,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1735 transitions. [2021-10-28 23:31:29,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.77777777777777) internal successors, (1735), 9 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,876 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,876 INFO L186 Difference]: Start difference. First operand has 208 places, 206 transitions, 454 flow. Second operand 9 states and 1735 transitions. [2021-10-28 23:31:29,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 235 transitions, 654 flow [2021-10-28 23:31:29,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 235 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 23:31:29,886 INFO L242 Difference]: Finished difference. Result has 217 places, 210 transitions, 494 flow [2021-10-28 23:31:29,887 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=494, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2021-10-28 23:31:29,888 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2021-10-28 23:31:29,888 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 494 flow [2021-10-28 23:31:29,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:29,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:29,889 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:29,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:31:29,890 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1373115335, now seen corresponding path program 1 times [2021-10-28 23:31:29,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:29,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941749525] [2021-10-28 23:31:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:29,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:31:30,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:30,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941749525] [2021-10-28 23:31:30,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941749525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:30,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:30,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:31:30,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464332441] [2021-10-28 23:31:30,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:31:30,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:31:30,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:31:30,051 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 241 [2021-10-28 23:31:30,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:30,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:30,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 241 [2021-10-28 23:31:30,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:30,399 INFO L129 PetriNetUnfolder]: 25/678 cut-off events. [2021-10-28 23:31:30,399 INFO L130 PetriNetUnfolder]: For 45/48 co-relation queries the response was YES. [2021-10-28 23:31:30,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 678 events. 25/678 cut-off events. For 45/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2680 event pairs, 0 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 871. Up to 54 conditions per place. [2021-10-28 23:31:30,407 INFO L132 encePairwiseOnDemand]: 231/241 looper letters, 51 selfloop transitions, 12 changer transitions 0/227 dead transitions. [2021-10-28 23:31:30,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 227 transitions, 654 flow [2021-10-28 23:31:30,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:31:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:31:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1723 transitions. [2021-10-28 23:31:30,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7943752881512217 [2021-10-28 23:31:30,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1723 transitions. [2021-10-28 23:31:30,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1723 transitions. [2021-10-28 23:31:30,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:30,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1723 transitions. [2021-10-28 23:31:30,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.44444444444446) internal successors, (1723), 9 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:30,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:30,470 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:30,471 INFO L186 Difference]: Start difference. First operand has 217 places, 210 transitions, 494 flow. Second operand 9 states and 1723 transitions. [2021-10-28 23:31:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 227 transitions, 654 flow [2021-10-28 23:31:30,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 227 transitions, 645 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:31:30,482 INFO L242 Difference]: Finished difference. Result has 224 places, 214 transitions, 529 flow [2021-10-28 23:31:30,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=529, PETRI_PLACES=224, PETRI_TRANSITIONS=214} [2021-10-28 23:31:30,484 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, 8 predicate places. [2021-10-28 23:31:30,484 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 214 transitions, 529 flow [2021-10-28 23:31:30,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:30,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:30,486 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:30,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:31:30,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:30,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1053593504, now seen corresponding path program 1 times [2021-10-28 23:31:30,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:30,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097333197] [2021-10-28 23:31:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:30,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:31:30,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:30,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097333197] [2021-10-28 23:31:30,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097333197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:30,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:30,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:31:30,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296171228] [2021-10-28 23:31:30,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:31:30,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:31:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:31:30,890 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 241 [2021-10-28 23:31:30,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 214 transitions, 529 flow. Second operand has 8 states, 8 states have (on average 177.375) internal successors, (1419), 8 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:30,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:30,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 241 [2021-10-28 23:31:30,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:32,505 INFO L129 PetriNetUnfolder]: 1087/3855 cut-off events. [2021-10-28 23:31:32,506 INFO L130 PetriNetUnfolder]: For 238/246 co-relation queries the response was YES. [2021-10-28 23:31:32,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 3855 events. 1087/3855 cut-off events. For 238/246 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 32331 event pairs, 457 based on Foata normal form. 2/3206 useless extension candidates. Maximal degree in co-relation 6081. Up to 631 conditions per place. [2021-10-28 23:31:32,575 INFO L132 encePairwiseOnDemand]: 230/241 looper letters, 79 selfloop transitions, 11 changer transitions 0/242 dead transitions. [2021-10-28 23:31:32,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 242 transitions, 766 flow [2021-10-28 23:31:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:31:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:31:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1631 transitions. [2021-10-28 23:31:32,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.751959428307976 [2021-10-28 23:31:32,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1631 transitions. [2021-10-28 23:31:32,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1631 transitions. [2021-10-28 23:31:32,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:32,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1631 transitions. [2021-10-28 23:31:32,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.22222222222223) internal successors, (1631), 9 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:32,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:32,607 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:32,607 INFO L186 Difference]: Start difference. First operand has 224 places, 214 transitions, 529 flow. Second operand 9 states and 1631 transitions. [2021-10-28 23:31:32,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 242 transitions, 766 flow [2021-10-28 23:31:32,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 242 transitions, 755 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:31:32,625 INFO L242 Difference]: Finished difference. Result has 233 places, 218 transitions, 568 flow [2021-10-28 23:31:32,626 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=568, PETRI_PLACES=233, PETRI_TRANSITIONS=218} [2021-10-28 23:31:32,626 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, 17 predicate places. [2021-10-28 23:31:32,627 INFO L470 AbstractCegarLoop]: Abstraction has has 233 places, 218 transitions, 568 flow [2021-10-28 23:31:32,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.375) internal successors, (1419), 8 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:32,628 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:32,629 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:32,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:31:32,629 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1614834946, now seen corresponding path program 1 times [2021-10-28 23:31:32,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:32,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580782265] [2021-10-28 23:31:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:32,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:31:32,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:32,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580782265] [2021-10-28 23:31:32,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580782265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:32,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:32,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:31:32,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505372489] [2021-10-28 23:31:32,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:31:32,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:32,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:31:32,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:31:32,995 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 241 [2021-10-28 23:31:32,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 218 transitions, 568 flow. Second operand has 8 states, 8 states have (on average 177.375) internal successors, (1419), 8 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:32,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:32,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 241 [2021-10-28 23:31:32,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:34,618 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([909] L119-->L122: Formula: (= v_thread4Thread1of1ForFork3_~cond~3_7 (ite (= (ite (or (< v_~j~0_7 v_~N~0_7) (< v_~q2_front~0_5 v_~q2_back~0_7)) 1 0) 0) 0 1)) InVars {~j~0=v_~j~0_7, ~q2_front~0=v_~q2_front~0_5, ~N~0=v_~N~0_7, ~q2_back~0=v_~q2_back~0_7} OutVars{~j~0=v_~j~0_7, ~q2_front~0=v_~q2_front~0_5, thread4Thread1of1ForFork3_~cond~3=v_thread4Thread1of1ForFork3_~cond~3_7, ~N~0=v_~N~0_7, ~q2_back~0=v_~q2_back~0_7} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~cond~3][233], [113#L52true, 235#true, Black: 258#(<= ~q2_back~0 ~q2_front~0), Black: 283#(<= ~n2~0 0), 29#L101true, 316#true, Black: 287#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n2~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~n2~0 ULTIMATE.start_create_fresh_int_array_~size)), 56#L86true, 36#L122true, 295#true, 217#L148-4true, Black: 266#(<= ~n1~0 0), Black: 270#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n1~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 240#(= ~total~0 0), Black: 310#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 ~j~0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 308#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 304#(and (= ~j~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 306#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 253#(<= ~q1_back~0 ~q1_front~0)]) [2021-10-28 23:31:34,618 INFO L384 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2021-10-28 23:31:34,618 INFO L387 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2021-10-28 23:31:34,618 INFO L387 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2021-10-28 23:31:34,619 INFO L387 tUnfolder$Statistics]: existing Event has 171 ancestors and is cut-off event [2021-10-28 23:31:34,620 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([909] L119-->L122: Formula: (= v_thread4Thread1of1ForFork3_~cond~3_7 (ite (= (ite (or (< v_~j~0_7 v_~N~0_7) (< v_~q2_front~0_5 v_~q2_back~0_7)) 1 0) 0) 0 1)) InVars {~j~0=v_~j~0_7, ~q2_front~0=v_~q2_front~0_5, ~N~0=v_~N~0_7, ~q2_back~0=v_~q2_back~0_7} OutVars{~j~0=v_~j~0_7, ~q2_front~0=v_~q2_front~0_5, thread4Thread1of1ForFork3_~cond~3=v_thread4Thread1of1ForFork3_~cond~3_7, ~N~0=v_~N~0_7, ~q2_back~0=v_~q2_back~0_7} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~cond~3][233], [235#true, Black: 258#(<= ~q2_back~0 ~q2_front~0), Black: 283#(<= ~n2~0 0), 29#L101true, Black: 287#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n2~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~n2~0 ULTIMATE.start_create_fresh_int_array_~size)), 316#true, 56#L86true, 36#L122true, 295#true, 217#L148-4true, Black: 266#(<= ~n1~0 0), Black: 270#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n1~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), 199#L51-1true, Black: 240#(= ~total~0 0), Black: 310#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 ~j~0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 308#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 304#(and (= ~j~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 306#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 253#(<= ~q1_back~0 ~q1_front~0)]) [2021-10-28 23:31:34,620 INFO L384 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2021-10-28 23:31:34,620 INFO L387 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2021-10-28 23:31:34,621 INFO L387 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2021-10-28 23:31:34,621 INFO L387 tUnfolder$Statistics]: existing Event has 171 ancestors and is cut-off event [2021-10-28 23:31:34,645 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([893] L83-->L86: Formula: (= v_thread2Thread1of1ForFork0_~cond~1_7 (ite (= (ite (< v_~j~0_5 v_~N~0_3) 1 0) 0) 0 1)) InVars {~j~0=v_~j~0_5, ~N~0=v_~N~0_3} OutVars{~j~0=v_~j~0_5, ~N~0=v_~N~0_3, thread2Thread1of1ForFork0_~cond~1=v_thread2Thread1of1ForFork0_~cond~1_7} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_~cond~1][218], [113#L52true, 235#true, Black: 258#(<= ~q2_back~0 ~q2_front~0), Black: 283#(<= ~n2~0 0), 29#L101true, Black: 287#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n2~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~n2~0 ULTIMATE.start_create_fresh_int_array_~size)), 316#true, 56#L86true, 295#true, 217#L148-4true, 136#L119true, Black: 266#(<= ~n1~0 0), Black: 270#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n1~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 240#(= ~total~0 0), Black: 310#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 ~j~0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 308#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 304#(and (= ~j~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 306#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 253#(<= ~q1_back~0 ~q1_front~0)]) [2021-10-28 23:31:34,645 INFO L384 tUnfolder$Statistics]: this new event has 178 ancestors and is cut-off event [2021-10-28 23:31:34,646 INFO L387 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2021-10-28 23:31:34,646 INFO L387 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2021-10-28 23:31:34,646 INFO L387 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2021-10-28 23:31:34,647 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([893] L83-->L86: Formula: (= v_thread2Thread1of1ForFork0_~cond~1_7 (ite (= (ite (< v_~j~0_5 v_~N~0_3) 1 0) 0) 0 1)) InVars {~j~0=v_~j~0_5, ~N~0=v_~N~0_3} OutVars{~j~0=v_~j~0_5, ~N~0=v_~N~0_3, thread2Thread1of1ForFork0_~cond~1=v_thread2Thread1of1ForFork0_~cond~1_7} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_~cond~1][218], [235#true, Black: 258#(<= ~q2_back~0 ~q2_front~0), Black: 283#(<= ~n2~0 0), 29#L101true, Black: 287#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n2~0 |ULTIMATE.start_create_fresh_int_array_#in~size|) (<= ~n2~0 ULTIMATE.start_create_fresh_int_array_~size)), 316#true, 56#L86true, 295#true, 217#L148-4true, 136#L119true, Black: 266#(<= ~n1~0 0), Black: 270#(and (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~n1~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), 199#L51-1true, Black: 240#(= ~total~0 0), Black: 310#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (= thread2Thread1of1ForFork0_~cond~1 0) (<= ~N~0 ~j~0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 308#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 304#(and (= ~j~0 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 306#(and (= ~j~0 0) (= ULTIMATE.start_create_fresh_int_array_~i~1 0) (<= ~N~0 ULTIMATE.start_create_fresh_int_array_~size) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_#in~size|)), Black: 253#(<= ~q1_back~0 ~q1_front~0)]) [2021-10-28 23:31:34,647 INFO L384 tUnfolder$Statistics]: this new event has 178 ancestors and is cut-off event [2021-10-28 23:31:34,647 INFO L387 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2021-10-28 23:31:34,647 INFO L387 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2021-10-28 23:31:34,647 INFO L387 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2021-10-28 23:31:34,688 INFO L129 PetriNetUnfolder]: 1128/4050 cut-off events. [2021-10-28 23:31:34,688 INFO L130 PetriNetUnfolder]: For 578/580 co-relation queries the response was YES. [2021-10-28 23:31:34,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 4050 events. 1128/4050 cut-off events. For 578/580 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 34464 event pairs, 440 based on Foata normal form. 0/3402 useless extension candidates. Maximal degree in co-relation 6711. Up to 723 conditions per place. [2021-10-28 23:31:34,754 INFO L132 encePairwiseOnDemand]: 230/241 looper letters, 66 selfloop transitions, 9 changer transitions 11/239 dead transitions. [2021-10-28 23:31:34,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 239 transitions, 789 flow [2021-10-28 23:31:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:31:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:31:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1627 transitions. [2021-10-28 23:31:34,762 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7501152604887045 [2021-10-28 23:31:34,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1627 transitions. [2021-10-28 23:31:34,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1627 transitions. [2021-10-28 23:31:34,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:34,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1627 transitions. [2021-10-28 23:31:34,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.77777777777777) internal successors, (1627), 9 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:34,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:34,781 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:34,781 INFO L186 Difference]: Start difference. First operand has 233 places, 218 transitions, 568 flow. Second operand 9 states and 1627 transitions. [2021-10-28 23:31:34,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 239 transitions, 789 flow [2021-10-28 23:31:34,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 239 transitions, 777 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 23:31:34,793 INFO L242 Difference]: Finished difference. Result has 240 places, 217 transitions, 574 flow [2021-10-28 23:31:34,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=240, PETRI_TRANSITIONS=217} [2021-10-28 23:31:34,794 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, 24 predicate places. [2021-10-28 23:31:34,795 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 217 transitions, 574 flow [2021-10-28 23:31:34,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.375) internal successors, (1419), 8 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:34,796 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:31:34,796 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:34,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:31:34,797 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-28 23:31:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1846303347, now seen corresponding path program 1 times [2021-10-28 23:31:34,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:34,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356828994] [2021-10-28 23:31:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:34,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:31:35,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:35,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356828994] [2021-10-28 23:31:35,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356828994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:35,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596232527] [2021-10-28 23:31:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:35,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:35,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:35,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:31:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:35,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:31:35,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:31:36,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596232527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:36,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:31:36,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-10-28 23:31:36,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672372313] [2021-10-28 23:31:36,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:31:36,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:31:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:31:36,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 241 [2021-10-28 23:31:36,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 217 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:36,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:31:36,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 241 [2021-10-28 23:31:36,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:31:36,686 INFO L129 PetriNetUnfolder]: 0/101 cut-off events. [2021-10-28 23:31:36,686 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-10-28 23:31:36,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 101 events. 0/101 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 3/104 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2021-10-28 23:31:36,687 INFO L132 encePairwiseOnDemand]: 224/241 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2021-10-28 23:31:36,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 101 transitions, 330 flow [2021-10-28 23:31:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:31:36,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 23:31:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 989 transitions. [2021-10-28 23:31:36,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6839557399723375 [2021-10-28 23:31:36,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 989 transitions. [2021-10-28 23:31:36,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 989 transitions. [2021-10-28 23:31:36,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:36,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 989 transitions. [2021-10-28 23:31:36,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:36,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:36,706 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:36,706 INFO L186 Difference]: Start difference. First operand has 240 places, 217 transitions, 574 flow. Second operand 6 states and 989 transitions. [2021-10-28 23:31:36,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 101 transitions, 330 flow [2021-10-28 23:31:36,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 101 transitions, 283 flow, removed 0 selfloop flow, removed 24 redundant places. [2021-10-28 23:31:36,711 INFO L242 Difference]: Finished difference. Result has 117 places, 0 transitions, 0 flow [2021-10-28 23:31:36,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=117, PETRI_TRANSITIONS=0} [2021-10-28 23:31:36,711 INFO L334 CegarLoopForPetriNet]: 216 programPoint places, -99 predicate places. [2021-10-28 23:31:36,712 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 0 transitions, 0 flow [2021-10-28 23:31:36,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:36,716 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:31:36,716 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:31:36,717 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:31:36,717 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:31:36,717 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-28 23:31:36,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:36,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:36,952 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:36,955 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:31:36,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:31:36,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:31:36 BasicIcfg [2021-10-28 23:31:36,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:31:36,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:31:36,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:31:36,961 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:31:36,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:26" (3/4) ... [2021-10-28 23:31:36,966 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:31:36,973 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 23:31:36,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 23:31:36,974 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 23:31:36,975 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-28 23:31:36,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2021-10-28 23:31:36,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:31:36,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:31:36,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:31:37,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:31:37,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:31:37,090 INFO L168 Benchmark]: Toolchain (without parser) took 13034.03 ms. Allocated memory was 111.1 MB in the beginning and 417.3 MB in the end (delta: 306.2 MB). Free memory was 73.0 MB in the beginning and 209.0 MB in the end (delta: -136.0 MB). Peak memory consumption was 170.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:37,091 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 111.1 MB. Free memory was 89.4 MB in the beginning and 89.4 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:31:37,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.43 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 83.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:37,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.92 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 80.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:37,093 INFO L168 Benchmark]: Boogie Preprocessor took 74.48 ms. Allocated memory is still 111.1 MB. Free memory was 80.4 MB in the beginning and 77.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:37,095 INFO L168 Benchmark]: RCFGBuilder took 1726.84 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 77.9 MB in the beginning and 95.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 43.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:37,096 INFO L168 Benchmark]: TraceAbstraction took 10536.81 ms. Allocated memory was 134.2 MB in the beginning and 417.3 MB in the end (delta: 283.1 MB). Free memory was 95.2 MB in the beginning and 214.4 MB in the end (delta: -119.2 MB). Peak memory consumption was 162.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:37,096 INFO L168 Benchmark]: Witness Printer took 127.31 ms. Allocated memory is still 417.3 MB. Free memory was 214.4 MB in the beginning and 209.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:37,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 111.1 MB. Free memory was 89.4 MB in the beginning and 89.4 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 466.43 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 83.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.92 ms. Allocated memory is still 111.1 MB. Free memory was 83.1 MB in the beginning and 80.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.48 ms. Allocated memory is still 111.1 MB. Free memory was 80.4 MB in the beginning and 77.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1726.84 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 77.9 MB in the beginning and 95.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 43.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10536.81 ms. Allocated memory was 134.2 MB in the beginning and 417.3 MB in the end (delta: 283.1 MB). Free memory was 95.2 MB in the beginning and 214.4 MB in the end (delta: -119.2 MB). Peak memory consumption was 162.7 MB. Max. memory is 16.1 GB. * Witness Printer took 127.31 ms. Allocated memory is still 417.3 MB. Free memory was 214.4 MB in the beginning and 209.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 254 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 345 SDslu, 369 SDs, 0 SdLazy, 551 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=574occurred in iteration=8, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1760 NumberOfCodeBlocks, 1760 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1750 ConstructedInterpolants, 0 QuantifiedInterpolants, 4940 SizeOfPredicates, 4 NumberOfNonLiveVariables, 470 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 19/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:31:37,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d073438a-ec1c-4859-8fdd-d2f161afa98b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...