./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:06:52,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:06:52,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:06:52,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:06:52,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:06:52,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:06:52,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:06:52,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:06:52,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:06:52,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:06:52,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:06:52,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:06:52,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:06:52,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:06:52,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:06:52,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:06:52,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:06:52,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:06:52,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:06:52,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:06:52,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:06:52,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:06:52,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:06:52,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:06:52,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:06:52,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:06:52,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:06:52,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:06:52,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:06:52,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:06:52,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:06:52,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:06:52,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:06:52,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:06:52,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:06:52,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:06:52,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:06:52,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:06:52,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:06:52,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:06:52,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:06:52,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:06:52,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:06:52,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:06:52,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:06:52,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:06:52,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:06:52,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:06:52,727 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:06:52,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:06:52,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:06:52,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:06:52,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:06:52,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:06:52,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:06:52,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:06:52,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:06:52,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:06:52,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:06:52,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:06:52,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:06:52,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:06:52,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:06:52,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:06:52,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:06:52,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:06:52,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:06:52,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:06:52,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:06:52,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:06:52,733 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:06:52,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:06:52,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:06:52,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:06:52,733 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_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2021-11-23 13:06:52,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:06:52,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:06:52,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:06:53,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:06:53,001 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:06:53,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2021-11-23 13:06:53,085 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/data/5b50fe47f/30d269a26a9a4f83a54e1dc52ab63003/FLAG21f169264 [2021-11-23 13:06:53,626 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:06:53,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2021-11-23 13:06:53,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/data/5b50fe47f/30d269a26a9a4f83a54e1dc52ab63003/FLAG21f169264 [2021-11-23 13:06:53,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/data/5b50fe47f/30d269a26a9a4f83a54e1dc52ab63003 [2021-11-23 13:06:53,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:06:53,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:06:53,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:53,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:06:53,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:06:53,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:53" (1/1) ... [2021-11-23 13:06:53,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7248eea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:53, skipping insertion in model container [2021-11-23 13:06:53,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:53" (1/1) ... [2021-11-23 13:06:54,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:06:54,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:06:54,308 WARN L230 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_ae80498b-a34f-4cf5-bd3b-d64e2989e712/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2021-11-23 13:06:54,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:54,338 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:06:54,404 WARN L230 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_ae80498b-a34f-4cf5-bd3b-d64e2989e712/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2021-11-23 13:06:54,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:54,435 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:06:54,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54 WrapperNode [2021-11-23 13:06:54,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:54,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:54,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:06:54,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:06:54,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,522 INFO L137 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2021-11-23 13:06:54,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:54,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:06:54,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:06:54,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:06:54,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:06:54,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:06:54,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:06:54,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:06:54,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (1/1) ... [2021-11-23 13:06:54,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:06:54,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:54,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:54,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:06:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:06:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:06:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:06:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:06:54,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 13:06:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 13:06:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 13:06:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 13:06:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-23 13:06:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-23 13:06:54,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-23 13:06:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-23 13:06:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:06:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 13:06:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 13:06:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:06:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:06:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:06:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:06:54,692 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 13:06:54,794 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:06:54,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:06:55,467 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:06:55,703 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:06:55,703 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 13:06:55,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:55 BoogieIcfgContainer [2021-11-23 13:06:55,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:06:55,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:06:55,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:06:55,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:06:55,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:06:53" (1/3) ... [2021-11-23 13:06:55,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228f9350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:55, skipping insertion in model container [2021-11-23 13:06:55,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:54" (2/3) ... [2021-11-23 13:06:55,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228f9350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:55, skipping insertion in model container [2021-11-23 13:06:55,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:55" (3/3) ... [2021-11-23 13:06:55,720 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2021-11-23 13:06:55,726 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 13:06:55,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:06:55,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:06:55,730 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 13:06:55,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,799 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,805 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,806 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,807 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,808 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,810 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,812 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,825 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,826 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,827 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,832 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,833 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,833 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,834 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,834 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,834 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,834 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,837 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,838 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,839 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,845 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,845 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,849 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,853 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,854 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,855 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,855 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,856 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~nondet24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,856 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,856 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,856 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,857 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,857 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,857 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~nondet14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:06:55,864 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-23 13:06:55,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:06:55,950 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 [2021-11-23 13:06:55,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 13:06:55,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 332 places, 356 transitions, 744 flow [2021-11-23 13:06:56,154 INFO L129 PetriNetUnfolder]: 37/352 cut-off events. [2021-11-23 13:06:56,155 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-23 13:06:56,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 352 events. 37/352 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 308. Up to 8 conditions per place. [2021-11-23 13:06:56,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 356 transitions, 744 flow [2021-11-23 13:06:56,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 339 transitions, 702 flow [2021-11-23 13:06:56,239 INFO L129 PetriNetUnfolder]: 37/338 cut-off events. [2021-11-23 13:06:56,239 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-23 13:06:56,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:06:56,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:56,240 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)] === [2021-11-23 13:06:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash -768917108, now seen corresponding path program 1 times [2021-11-23 13:06:56,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:56,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477259857] [2021-11-23 13:06:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:56,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:56,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:56,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477259857] [2021-11-23 13:06:56,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477259857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:56,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:56,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:06:56,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150291325] [2021-11-23 13:06:56,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:56,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:06:56,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:06:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:06:56,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 356 [2021-11-23 13:06:56,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 339 transitions, 702 flow. Second operand has 2 states, 2 states have (on average 325.0) internal successors, (650), 2 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:56,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:06:56,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 356 [2021-11-23 13:06:56,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:06:56,719 INFO L129 PetriNetUnfolder]: 56/358 cut-off events. [2021-11-23 13:06:56,719 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-11-23 13:06:56,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 358 events. 56/358 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 0 based on Foata normal form. 29/355 useless extension candidates. Maximal degree in co-relation 334. Up to 57 conditions per place. [2021-11-23 13:06:56,726 INFO L132 encePairwiseOnDemand]: 339/356 looper letters, 20 selfloop transitions, 0 changer transitions 9/322 dead transitions. [2021-11-23 13:06:56,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 322 transitions, 708 flow [2021-11-23 13:06:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:06:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-23 13:06:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2021-11-23 13:06:56,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9452247191011236 [2021-11-23 13:06:56,745 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2021-11-23 13:06:56,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2021-11-23 13:06:56,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:56,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2021-11-23 13:06:56,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:56,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:56,774 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:56,776 INFO L186 Difference]: Start difference. First operand has 315 places, 339 transitions, 702 flow. Second operand 2 states and 673 transitions. [2021-11-23 13:06:56,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 322 transitions, 708 flow [2021-11-23 13:06:56,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 322 transitions, 692 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-23 13:06:56,798 INFO L242 Difference]: Finished difference. Result has 308 places, 313 transitions, 634 flow [2021-11-23 13:06:56,801 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=634, PETRI_PLACES=308, PETRI_TRANSITIONS=313} [2021-11-23 13:06:56,807 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -7 predicate places. [2021-11-23 13:06:56,807 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 313 transitions, 634 flow [2021-11-23 13:06:56,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 325.0) internal successors, (650), 2 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:56,809 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:06:56,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:56,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:06:56,810 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)] === [2021-11-23 13:06:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:56,811 INFO L85 PathProgramCache]: Analyzing trace with hash 130691898, now seen corresponding path program 1 times [2021-11-23 13:06:56,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:56,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435161446] [2021-11-23 13:06:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:56,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:57,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:57,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435161446] [2021-11-23 13:06:57,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435161446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:57,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:57,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:06:57,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106996245] [2021-11-23 13:06:57,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:57,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:06:57,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:57,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:06:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:57,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 356 [2021-11-23 13:06:57,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 313 transitions, 634 flow. Second operand has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:06:57,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 356 [2021-11-23 13:06:57,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:06:57,534 INFO L129 PetriNetUnfolder]: 107/476 cut-off events. [2021-11-23 13:06:57,534 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-11-23 13:06:57,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 476 events. 107/476 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 711 event pairs, 0 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 635. Up to 85 conditions per place. [2021-11-23 13:06:57,547 INFO L132 encePairwiseOnDemand]: 346/356 looper letters, 69 selfloop transitions, 7 changer transitions 4/335 dead transitions. [2021-11-23 13:06:57,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 335 transitions, 845 flow [2021-11-23 13:06:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:06:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-23 13:06:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1436 transitions. [2021-11-23 13:06:57,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8067415730337079 [2021-11-23 13:06:57,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1436 transitions. [2021-11-23 13:06:57,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1436 transitions. [2021-11-23 13:06:57,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:57,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1436 transitions. [2021-11-23 13:06:57,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.2) internal successors, (1436), 5 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,573 INFO L186 Difference]: Start difference. First operand has 308 places, 313 transitions, 634 flow. Second operand 5 states and 1436 transitions. [2021-11-23 13:06:57,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 335 transitions, 845 flow [2021-11-23 13:06:57,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 335 transitions, 845 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-23 13:06:57,584 INFO L242 Difference]: Finished difference. Result has 306 places, 319 transitions, 685 flow [2021-11-23 13:06:57,585 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=685, PETRI_PLACES=306, PETRI_TRANSITIONS=319} [2021-11-23 13:06:57,586 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -9 predicate places. [2021-11-23 13:06:57,586 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 319 transitions, 685 flow [2021-11-23 13:06:57,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,588 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:06:57,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:57,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:06:57,589 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)] === [2021-11-23 13:06:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2069722549, now seen corresponding path program 1 times [2021-11-23 13:06:57,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:57,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469152145] [2021-11-23 13:06:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:57,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:57,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469152145] [2021-11-23 13:06:57,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469152145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:57,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:57,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:06:57,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613648760] [2021-11-23 13:06:57,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:57,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:06:57,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:57,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:06:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:57,834 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2021-11-23 13:06:57,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 319 transitions, 685 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:06:57,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2021-11-23 13:06:57,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:06:58,041 INFO L129 PetriNetUnfolder]: 171/648 cut-off events. [2021-11-23 13:06:58,041 INFO L130 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2021-11-23 13:06:58,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 648 events. 171/648 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1492 event pairs, 3 based on Foata normal form. 19/590 useless extension candidates. Maximal degree in co-relation 947. Up to 124 conditions per place. [2021-11-23 13:06:58,055 INFO L132 encePairwiseOnDemand]: 349/356 looper letters, 44 selfloop transitions, 4 changer transitions 0/337 dead transitions. [2021-11-23 13:06:58,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 337 transitions, 838 flow [2021-11-23 13:06:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:06:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 984 transitions. [2021-11-23 13:06:58,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9213483146067416 [2021-11-23 13:06:58,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 984 transitions. [2021-11-23 13:06:58,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 984 transitions. [2021-11-23 13:06:58,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:58,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 984 transitions. [2021-11-23 13:06:58,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,069 INFO L186 Difference]: Start difference. First operand has 306 places, 319 transitions, 685 flow. Second operand 3 states and 984 transitions. [2021-11-23 13:06:58,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 337 transitions, 838 flow [2021-11-23 13:06:58,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 337 transitions, 824 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-23 13:06:58,081 INFO L242 Difference]: Finished difference. Result has 304 places, 322 transitions, 710 flow [2021-11-23 13:06:58,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=304, PETRI_TRANSITIONS=322} [2021-11-23 13:06:58,082 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -11 predicate places. [2021-11-23 13:06:58,083 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 322 transitions, 710 flow [2021-11-23 13:06:58,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:06:58,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:58,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:06:58,085 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)] === [2021-11-23 13:06:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:58,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2137770165, now seen corresponding path program 1 times [2021-11-23 13:06:58,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:58,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294486273] [2021-11-23 13:06:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:58,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:58,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:58,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294486273] [2021-11-23 13:06:58,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294486273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:58,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:58,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:06:58,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056222430] [2021-11-23 13:06:58,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:58,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:06:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:06:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:58,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2021-11-23 13:06:58,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 322 transitions, 710 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:06:58,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2021-11-23 13:06:58,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:06:58,631 INFO L129 PetriNetUnfolder]: 317/1067 cut-off events. [2021-11-23 13:06:58,631 INFO L130 PetriNetUnfolder]: For 278/288 co-relation queries the response was YES. [2021-11-23 13:06:58,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 1067 events. 317/1067 cut-off events. For 278/288 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4030 event pairs, 15 based on Foata normal form. 15/925 useless extension candidates. Maximal degree in co-relation 1725. Up to 194 conditions per place. [2021-11-23 13:06:58,655 INFO L132 encePairwiseOnDemand]: 353/356 looper letters, 57 selfloop transitions, 2 changer transitions 0/348 dead transitions. [2021-11-23 13:06:58,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 348 transitions, 934 flow [2021-11-23 13:06:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:06:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2021-11-23 13:06:58,659 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9222846441947565 [2021-11-23 13:06:58,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2021-11-23 13:06:58,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2021-11-23 13:06:58,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:58,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2021-11-23 13:06:58,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,668 INFO L186 Difference]: Start difference. First operand has 304 places, 322 transitions, 710 flow. Second operand 3 states and 985 transitions. [2021-11-23 13:06:58,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 348 transitions, 934 flow [2021-11-23 13:06:58,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 348 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-23 13:06:58,678 INFO L242 Difference]: Finished difference. Result has 306 places, 323 transitions, 720 flow [2021-11-23 13:06:58,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=720, PETRI_PLACES=306, PETRI_TRANSITIONS=323} [2021-11-23 13:06:58,680 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -9 predicate places. [2021-11-23 13:06:58,680 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 323 transitions, 720 flow [2021-11-23 13:06:58,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:06:58,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:58,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:06:58,682 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)] === [2021-11-23 13:06:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1331819937, now seen corresponding path program 1 times [2021-11-23 13:06:58,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:58,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687215605] [2021-11-23 13:06:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:58,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:58,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:58,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687215605] [2021-11-23 13:06:58,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687215605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:58,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:58,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:06:58,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911594345] [2021-11-23 13:06:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:58,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:06:58,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:06:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:58,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2021-11-23 13:06:58,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 323 transitions, 720 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:06:58,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2021-11-23 13:06:58,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:06:59,373 INFO L129 PetriNetUnfolder]: 579/1866 cut-off events. [2021-11-23 13:06:59,373 INFO L130 PetriNetUnfolder]: For 684/700 co-relation queries the response was YES. [2021-11-23 13:06:59,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 1866 events. 579/1866 cut-off events. For 684/700 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10159 event pairs, 29 based on Foata normal form. 33/1568 useless extension candidates. Maximal degree in co-relation 3112. Up to 363 conditions per place. [2021-11-23 13:06:59,467 INFO L132 encePairwiseOnDemand]: 353/356 looper letters, 59 selfloop transitions, 2 changer transitions 0/350 dead transitions. [2021-11-23 13:06:59,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 350 transitions, 956 flow [2021-11-23 13:06:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:06:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2021-11-23 13:06:59,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9222846441947565 [2021-11-23 13:06:59,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2021-11-23 13:06:59,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2021-11-23 13:06:59,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:59,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2021-11-23 13:06:59,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,479 INFO L186 Difference]: Start difference. First operand has 306 places, 323 transitions, 720 flow. Second operand 3 states and 985 transitions. [2021-11-23 13:06:59,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 350 transitions, 956 flow [2021-11-23 13:06:59,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 350 transitions, 953 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-23 13:06:59,491 INFO L242 Difference]: Finished difference. Result has 308 places, 324 transitions, 732 flow [2021-11-23 13:06:59,492 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=732, PETRI_PLACES=308, PETRI_TRANSITIONS=324} [2021-11-23 13:06:59,495 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -7 predicate places. [2021-11-23 13:06:59,495 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 324 transitions, 732 flow [2021-11-23 13:06:59,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:06:59,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:59,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:06:59,497 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)] === [2021-11-23 13:06:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1308273172, now seen corresponding path program 1 times [2021-11-23 13:06:59,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:59,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924997061] [2021-11-23 13:06:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:59,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:59,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:59,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924997061] [2021-11-23 13:06:59,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924997061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:59,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:59,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:06:59,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913313998] [2021-11-23 13:06:59,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:59,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:06:59,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:59,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:06:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:59,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2021-11-23 13:06:59,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 324 transitions, 732 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 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) [2021-11-23 13:06:59,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:06:59,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2021-11-23 13:06:59,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:00,343 INFO L129 PetriNetUnfolder]: 1212/3067 cut-off events. [2021-11-23 13:07:00,343 INFO L130 PetriNetUnfolder]: For 1592/1718 co-relation queries the response was YES. [2021-11-23 13:07:00,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5817 conditions, 3067 events. 1212/3067 cut-off events. For 1592/1718 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18739 event pairs, 155 based on Foata normal form. 27/2525 useless extension candidates. Maximal degree in co-relation 5809. Up to 847 conditions per place. [2021-11-23 13:07:00,411 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 52 selfloop transitions, 6 changer transitions 0/346 dead transitions. [2021-11-23 13:07:00,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 346 transitions, 949 flow [2021-11-23 13:07:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:07:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:07:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2021-11-23 13:07:00,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176029962546817 [2021-11-23 13:07:00,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2021-11-23 13:07:00,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2021-11-23 13:07:00,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:00,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2021-11-23 13:07:00,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:00,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:00,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:00,425 INFO L186 Difference]: Start difference. First operand has 308 places, 324 transitions, 732 flow. Second operand 3 states and 980 transitions. [2021-11-23 13:07:00,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 346 transitions, 949 flow [2021-11-23 13:07:00,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 346 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-23 13:07:00,437 INFO L242 Difference]: Finished difference. Result has 311 places, 325 transitions, 760 flow [2021-11-23 13:07:00,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=311, PETRI_TRANSITIONS=325} [2021-11-23 13:07:00,440 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, -4 predicate places. [2021-11-23 13:07:00,441 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 325 transitions, 760 flow [2021-11-23 13:07:00,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 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) [2021-11-23 13:07:00,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:00,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:00,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:07:00,442 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)] === [2021-11-23 13:07:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1010840920, now seen corresponding path program 1 times [2021-11-23 13:07:00,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:00,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217027917] [2021-11-23 13:07:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:00,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:07:00,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217027917] [2021-11-23 13:07:00,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217027917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:00,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:00,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:07:00,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479753482] [2021-11-23 13:07:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:00,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:07:00,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:07:00,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:07:00,591 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 356 [2021-11-23 13:07:00,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 325 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:00,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:00,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 356 [2021-11-23 13:07:00,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:01,478 INFO L129 PetriNetUnfolder]: 807/2922 cut-off events. [2021-11-23 13:07:01,478 INFO L130 PetriNetUnfolder]: For 1978/2167 co-relation queries the response was YES. [2021-11-23 13:07:01,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 2922 events. 807/2922 cut-off events. For 1978/2167 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18611 event pairs, 117 based on Foata normal form. 95/2491 useless extension candidates. Maximal degree in co-relation 5123. Up to 794 conditions per place. [2021-11-23 13:07:01,528 INFO L132 encePairwiseOnDemand]: 344/356 looper letters, 128 selfloop transitions, 11 changer transitions 0/383 dead transitions. [2021-11-23 13:07:01,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 383 transitions, 1186 flow [2021-11-23 13:07:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:07:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-23 13:07:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2539 transitions. [2021-11-23 13:07:01,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7924469413233458 [2021-11-23 13:07:01,537 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2539 transitions. [2021-11-23 13:07:01,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2539 transitions. [2021-11-23 13:07:01,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:01,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2539 transitions. [2021-11-23 13:07:01,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 282.1111111111111) internal successors, (2539), 9 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:01,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:01,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:01,555 INFO L186 Difference]: Start difference. First operand has 311 places, 325 transitions, 760 flow. Second operand 9 states and 2539 transitions. [2021-11-23 13:07:01,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 383 transitions, 1186 flow [2021-11-23 13:07:01,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 383 transitions, 1174 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-23 13:07:01,565 INFO L242 Difference]: Finished difference. Result has 319 places, 329 transitions, 794 flow [2021-11-23 13:07:01,566 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=794, PETRI_PLACES=319, PETRI_TRANSITIONS=329} [2021-11-23 13:07:01,566 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 4 predicate places. [2021-11-23 13:07:01,566 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 329 transitions, 794 flow [2021-11-23 13:07:01,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:01,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:01,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:01,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:07:01,568 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)] === [2021-11-23 13:07:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash -661414508, now seen corresponding path program 1 times [2021-11-23 13:07:01,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:01,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452293869] [2021-11-23 13:07:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:01,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:07:01,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:01,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452293869] [2021-11-23 13:07:01,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452293869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:01,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:01,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:07:01,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024013899] [2021-11-23 13:07:01,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:01,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:07:01,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:07:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:07:01,657 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2021-11-23 13:07:01,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 329 transitions, 794 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:01,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:01,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2021-11-23 13:07:01,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:02,237 INFO L129 PetriNetUnfolder]: 1134/2460 cut-off events. [2021-11-23 13:07:02,237 INFO L130 PetriNetUnfolder]: For 2038/2205 co-relation queries the response was YES. [2021-11-23 13:07:02,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 2460 events. 1134/2460 cut-off events. For 2038/2205 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10131 event pairs, 43 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 5560. Up to 1047 conditions per place. [2021-11-23 13:07:02,290 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 48 selfloop transitions, 5 changer transitions 3/338 dead transitions. [2021-11-23 13:07:02,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 338 transitions, 928 flow [2021-11-23 13:07:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:07:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:07:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2021-11-23 13:07:02,294 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2021-11-23 13:07:02,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2021-11-23 13:07:02,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2021-11-23 13:07:02,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:02,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2021-11-23 13:07:02,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:02,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:02,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:02,301 INFO L186 Difference]: Start difference. First operand has 319 places, 329 transitions, 794 flow. Second operand 3 states and 962 transitions. [2021-11-23 13:07:02,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 338 transitions, 928 flow [2021-11-23 13:07:02,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 338 transitions, 919 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-23 13:07:02,311 INFO L242 Difference]: Finished difference. Result has 320 places, 323 transitions, 774 flow [2021-11-23 13:07:02,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=774, PETRI_PLACES=320, PETRI_TRANSITIONS=323} [2021-11-23 13:07:02,314 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 5 predicate places. [2021-11-23 13:07:02,314 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 323 transitions, 774 flow [2021-11-23 13:07:02,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:02,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:02,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:02,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:07:02,316 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)] === [2021-11-23 13:07:02,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1101377145, now seen corresponding path program 1 times [2021-11-23 13:07:02,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:02,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71301782] [2021-11-23 13:07:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:02,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:03,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:03,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71301782] [2021-11-23 13:07:03,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71301782] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:07:03,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129325585] [2021-11-23 13:07:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:03,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:03,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:03,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:07:03,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:07:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:03,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 13:07:03,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:05,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:06,040 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-11-23 13:07:06,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 13:07:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:07,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129325585] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:07,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:07:07,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 13] total 42 [2021-11-23 13:07:07,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919267346] [2021-11-23 13:07:07,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:07,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-23 13:07:07,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-23 13:07:07,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1427, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 13:07:07,823 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 356 [2021-11-23 13:07:07,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 323 transitions, 774 flow. Second operand has 42 states, 42 states have (on average 192.78571428571428) internal successors, (8097), 42 states have internal predecessors, (8097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:07,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:07,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 356 [2021-11-23 13:07:07,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:12,538 INFO L129 PetriNetUnfolder]: 3870/10455 cut-off events. [2021-11-23 13:07:12,538 INFO L130 PetriNetUnfolder]: For 8395/9181 co-relation queries the response was YES. [2021-11-23 13:07:12,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22379 conditions, 10455 events. 3870/10455 cut-off events. For 8395/9181 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 89517 event pairs, 22 based on Foata normal form. 48/9205 useless extension candidates. Maximal degree in co-relation 22367. Up to 2245 conditions per place. [2021-11-23 13:07:12,764 INFO L132 encePairwiseOnDemand]: 322/356 looper letters, 379 selfloop transitions, 75 changer transitions 16/641 dead transitions. [2021-11-23 13:07:12,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 641 transitions, 2777 flow [2021-11-23 13:07:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-23 13:07:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-11-23 13:07:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 7856 transitions. [2021-11-23 13:07:12,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5516853932584269 [2021-11-23 13:07:12,792 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 7856 transitions. [2021-11-23 13:07:12,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 7856 transitions. [2021-11-23 13:07:12,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:12,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 7856 transitions. [2021-11-23 13:07:12,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 196.4) internal successors, (7856), 40 states have internal predecessors, (7856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:12,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 356.0) internal successors, (14596), 41 states have internal predecessors, (14596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:12,872 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 356.0) internal successors, (14596), 41 states have internal predecessors, (14596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:12,872 INFO L186 Difference]: Start difference. First operand has 320 places, 323 transitions, 774 flow. Second operand 40 states and 7856 transitions. [2021-11-23 13:07:12,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 641 transitions, 2777 flow [2021-11-23 13:07:12,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 641 transitions, 2712 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-11-23 13:07:12,896 INFO L242 Difference]: Finished difference. Result has 372 places, 382 transitions, 1387 flow [2021-11-23 13:07:12,897 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1387, PETRI_PLACES=372, PETRI_TRANSITIONS=382} [2021-11-23 13:07:12,898 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 57 predicate places. [2021-11-23 13:07:12,898 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 382 transitions, 1387 flow [2021-11-23 13:07:12,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 192.78571428571428) internal successors, (8097), 42 states have internal predecessors, (8097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:12,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:12,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:12,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:13,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 13:07:13,130 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 13:07:13,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash -804196440, now seen corresponding path program 1 times [2021-11-23 13:07:13,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:13,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062540392] [2021-11-23 13:07:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:13,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:07:13,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:13,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062540392] [2021-11-23 13:07:13,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062540392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:13,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:13,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:07:13,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759954941] [2021-11-23 13:07:13,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:13,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:07:13,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:07:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:07:13,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2021-11-23 13:07:13,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 382 transitions, 1387 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:13,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:13,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2021-11-23 13:07:13,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:16,088 INFO L129 PetriNetUnfolder]: 4120/11145 cut-off events. [2021-11-23 13:07:16,088 INFO L130 PetriNetUnfolder]: For 36485/38378 co-relation queries the response was YES. [2021-11-23 13:07:16,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31371 conditions, 11145 events. 4120/11145 cut-off events. For 36485/38378 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 101751 event pairs, 547 based on Foata normal form. 63/9597 useless extension candidates. Maximal degree in co-relation 31340. Up to 3185 conditions per place. [2021-11-23 13:07:16,385 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 97 selfloop transitions, 8 changer transitions 0/407 dead transitions. [2021-11-23 13:07:16,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 407 transitions, 1785 flow [2021-11-23 13:07:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:07:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:07:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2021-11-23 13:07:16,389 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185393258426966 [2021-11-23 13:07:16,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2021-11-23 13:07:16,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2021-11-23 13:07:16,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:16,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2021-11-23 13:07:16,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:16,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:16,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:16,396 INFO L186 Difference]: Start difference. First operand has 372 places, 382 transitions, 1387 flow. Second operand 3 states and 981 transitions. [2021-11-23 13:07:16,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 407 transitions, 1785 flow [2021-11-23 13:07:16,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 407 transitions, 1699 flow, removed 31 selfloop flow, removed 16 redundant places. [2021-11-23 13:07:16,478 INFO L242 Difference]: Finished difference. Result has 354 places, 378 transitions, 1312 flow [2021-11-23 13:07:16,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1312, PETRI_PLACES=354, PETRI_TRANSITIONS=378} [2021-11-23 13:07:16,480 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 39 predicate places. [2021-11-23 13:07:16,480 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 378 transitions, 1312 flow [2021-11-23 13:07:16,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:16,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:16,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:16,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:07:16,482 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 13:07:16,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:16,492 INFO L85 PathProgramCache]: Analyzing trace with hash 600230109, now seen corresponding path program 1 times [2021-11-23 13:07:16,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:16,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631848635] [2021-11-23 13:07:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:16,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:07:16,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:16,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631848635] [2021-11-23 13:07:16,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631848635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:16,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:16,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:07:16,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131926683] [2021-11-23 13:07:16,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:16,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:07:16,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:16,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:07:16,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:07:16,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 356 [2021-11-23 13:07:16,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 378 transitions, 1312 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:16,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:16,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 356 [2021-11-23 13:07:16,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:19,826 INFO L129 PetriNetUnfolder]: 5140/14798 cut-off events. [2021-11-23 13:07:19,827 INFO L130 PetriNetUnfolder]: For 52318/55668 co-relation queries the response was YES. [2021-11-23 13:07:19,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40685 conditions, 14798 events. 5140/14798 cut-off events. For 52318/55668 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 151309 event pairs, 898 based on Foata normal form. 48/12919 useless extension candidates. Maximal degree in co-relation 40659. Up to 3930 conditions per place. [2021-11-23 13:07:20,123 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 88 selfloop transitions, 8 changer transitions 0/399 dead transitions. [2021-11-23 13:07:20,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 399 transitions, 1673 flow [2021-11-23 13:07:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:07:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:07:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2021-11-23 13:07:20,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176029962546817 [2021-11-23 13:07:20,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2021-11-23 13:07:20,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2021-11-23 13:07:20,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:20,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2021-11-23 13:07:20,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:20,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:20,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:20,134 INFO L186 Difference]: Start difference. First operand has 354 places, 378 transitions, 1312 flow. Second operand 3 states and 980 transitions. [2021-11-23 13:07:20,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 399 transitions, 1673 flow [2021-11-23 13:07:20,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 399 transitions, 1615 flow, removed 17 selfloop flow, removed 2 redundant places. [2021-11-23 13:07:20,199 INFO L242 Difference]: Finished difference. Result has 356 places, 371 transitions, 1251 flow [2021-11-23 13:07:20,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1251, PETRI_PLACES=356, PETRI_TRANSITIONS=371} [2021-11-23 13:07:20,200 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 41 predicate places. [2021-11-23 13:07:20,200 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 371 transitions, 1251 flow [2021-11-23 13:07:20,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:20,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:20,201 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:20,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:07:20,202 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 13:07:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1964985486, now seen corresponding path program 1 times [2021-11-23 13:07:20,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:20,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000444852] [2021-11-23 13:07:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:20,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:07:20,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000444852] [2021-11-23 13:07:20,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000444852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:20,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:20,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:07:20,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357031956] [2021-11-23 13:07:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:20,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:07:20,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:07:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:07:20,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 356 [2021-11-23 13:07:20,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 371 transitions, 1251 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:20,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:20,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 356 [2021-11-23 13:07:20,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:22,727 INFO L129 PetriNetUnfolder]: 2800/10024 cut-off events. [2021-11-23 13:07:22,727 INFO L130 PetriNetUnfolder]: For 39157/40689 co-relation queries the response was YES. [2021-11-23 13:07:22,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27315 conditions, 10024 events. 2800/10024 cut-off events. For 39157/40689 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 99265 event pairs, 271 based on Foata normal form. 189/9087 useless extension candidates. Maximal degree in co-relation 27288. Up to 2733 conditions per place. [2021-11-23 13:07:22,900 INFO L132 encePairwiseOnDemand]: 353/356 looper letters, 96 selfloop transitions, 2 changer transitions 0/403 dead transitions. [2021-11-23 13:07:22,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 403 transitions, 1711 flow [2021-11-23 13:07:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:07:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:07:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2021-11-23 13:07:22,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9194756554307116 [2021-11-23 13:07:22,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2021-11-23 13:07:22,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2021-11-23 13:07:22,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:22,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2021-11-23 13:07:22,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:22,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:22,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:22,911 INFO L186 Difference]: Start difference. First operand has 356 places, 371 transitions, 1251 flow. Second operand 3 states and 982 transitions. [2021-11-23 13:07:22,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 403 transitions, 1711 flow [2021-11-23 13:07:22,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 403 transitions, 1671 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-11-23 13:07:22,954 INFO L242 Difference]: Finished difference. Result has 354 places, 366 transitions, 1194 flow [2021-11-23 13:07:22,955 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1194, PETRI_PLACES=354, PETRI_TRANSITIONS=366} [2021-11-23 13:07:22,956 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 39 predicate places. [2021-11-23 13:07:22,956 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 366 transitions, 1194 flow [2021-11-23 13:07:22,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:22,956 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:22,957 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:22,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:07:22,957 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 13:07:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1785388710, now seen corresponding path program 2 times [2021-11-23 13:07:22,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:22,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022046801] [2021-11-23 13:07:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:22,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:07:23,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:23,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022046801] [2021-11-23 13:07:23,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022046801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:23,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:23,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:07:23,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878621597] [2021-11-23 13:07:23,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:23,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:07:23,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:23,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:07:23,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:07:23,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2021-11-23 13:07:23,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 366 transitions, 1194 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:23,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:23,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2021-11-23 13:07:23,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:26,771 INFO L129 PetriNetUnfolder]: 6436/15814 cut-off events. [2021-11-23 13:07:26,772 INFO L130 PetriNetUnfolder]: For 84500/87472 co-relation queries the response was YES. [2021-11-23 13:07:26,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54573 conditions, 15814 events. 6436/15814 cut-off events. For 84500/87472 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 143987 event pairs, 649 based on Foata normal form. 12/13990 useless extension candidates. Maximal degree in co-relation 54546. Up to 6079 conditions per place. [2021-11-23 13:07:27,067 INFO L132 encePairwiseOnDemand]: 351/356 looper letters, 82 selfloop transitions, 12 changer transitions 0/389 dead transitions. [2021-11-23 13:07:27,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 389 transitions, 1576 flow [2021-11-23 13:07:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:07:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:07:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2021-11-23 13:07:27,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2021-11-23 13:07:27,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2021-11-23 13:07:27,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2021-11-23 13:07:27,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:27,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2021-11-23 13:07:27,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:27,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:27,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:27,078 INFO L186 Difference]: Start difference. First operand has 354 places, 366 transitions, 1194 flow. Second operand 3 states and 962 transitions. [2021-11-23 13:07:27,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 389 transitions, 1576 flow [2021-11-23 13:07:27,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 389 transitions, 1574 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-23 13:07:27,122 INFO L242 Difference]: Finished difference. Result has 357 places, 367 transitions, 1248 flow [2021-11-23 13:07:27,123 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1248, PETRI_PLACES=357, PETRI_TRANSITIONS=367} [2021-11-23 13:07:27,123 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 42 predicate places. [2021-11-23 13:07:27,124 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 367 transitions, 1248 flow [2021-11-23 13:07:27,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:27,124 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:27,125 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:27,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:07:27,125 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 13:07:27,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1859109363, now seen corresponding path program 1 times [2021-11-23 13:07:27,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:27,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167249176] [2021-11-23 13:07:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:27,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:07:27,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:27,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167249176] [2021-11-23 13:07:27,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167249176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:27,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:27,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:07:27,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578848416] [2021-11-23 13:07:27,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:27,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:07:27,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:27,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:07:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:07:27,185 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 356 [2021-11-23 13:07:27,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 367 transitions, 1248 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:27,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:27,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 356 [2021-11-23 13:07:27,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:30,696 INFO L129 PetriNetUnfolder]: 6024/14711 cut-off events. [2021-11-23 13:07:30,696 INFO L130 PetriNetUnfolder]: For 81200/84009 co-relation queries the response was YES. [2021-11-23 13:07:30,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51986 conditions, 14711 events. 6024/14711 cut-off events. For 81200/84009 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 128454 event pairs, 675 based on Foata normal form. 116/13413 useless extension candidates. Maximal degree in co-relation 51958. Up to 5600 conditions per place. [2021-11-23 13:07:31,203 INFO L132 encePairwiseOnDemand]: 350/356 looper letters, 91 selfloop transitions, 5 changer transitions 0/391 dead transitions. [2021-11-23 13:07:31,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 391 transitions, 1638 flow [2021-11-23 13:07:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:07:31,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 13:07:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2021-11-23 13:07:31,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9026217228464419 [2021-11-23 13:07:31,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2021-11-23 13:07:31,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2021-11-23 13:07:31,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:31,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2021-11-23 13:07:31,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 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) [2021-11-23 13:07:31,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:31,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:31,215 INFO L186 Difference]: Start difference. First operand has 357 places, 367 transitions, 1248 flow. Second operand 3 states and 964 transitions. [2021-11-23 13:07:31,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 391 transitions, 1638 flow [2021-11-23 13:07:31,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 391 transitions, 1614 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-23 13:07:31,267 INFO L242 Difference]: Finished difference. Result has 359 places, 368 transitions, 1254 flow [2021-11-23 13:07:31,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1254, PETRI_PLACES=359, PETRI_TRANSITIONS=368} [2021-11-23 13:07:31,268 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 44 predicate places. [2021-11-23 13:07:31,269 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 368 transitions, 1254 flow [2021-11-23 13:07:31,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:31,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:31,270 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:31,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:07:31,270 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 13:07:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2066376241, now seen corresponding path program 1 times [2021-11-23 13:07:31,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:31,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730627847] [2021-11-23 13:07:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:31,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:07:31,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730627847] [2021-11-23 13:07:31,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730627847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:31,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:31,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:07:31,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182457530] [2021-11-23 13:07:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:31,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:07:31,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:07:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:07:31,363 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 356 [2021-11-23 13:07:31,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 368 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:31,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:07:31,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 356 [2021-11-23 13:07:31,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:07:33,901 INFO L129 PetriNetUnfolder]: 2938/10745 cut-off events. [2021-11-23 13:07:33,901 INFO L130 PetriNetUnfolder]: For 34219/35781 co-relation queries the response was YES. [2021-11-23 13:07:33,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29147 conditions, 10745 events. 2938/10745 cut-off events. For 34219/35781 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 104381 event pairs, 437 based on Foata normal form. 3/9535 useless extension candidates. Maximal degree in co-relation 29118. Up to 3534 conditions per place. [2021-11-23 13:07:34,049 INFO L132 encePairwiseOnDemand]: 346/356 looper letters, 109 selfloop transitions, 8 changer transitions 29/401 dead transitions. [2021-11-23 13:07:34,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 401 transitions, 1686 flow [2021-11-23 13:07:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:07:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-23 13:07:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2510 transitions. [2021-11-23 13:07:34,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833957553058677 [2021-11-23 13:07:34,056 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2510 transitions. [2021-11-23 13:07:34,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2510 transitions. [2021-11-23 13:07:34,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:07:34,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2510 transitions. [2021-11-23 13:07:34,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 278.8888888888889) internal successors, (2510), 9 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:34,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:34,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 356.0) internal successors, (3560), 10 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:34,072 INFO L186 Difference]: Start difference. First operand has 359 places, 368 transitions, 1254 flow. Second operand 9 states and 2510 transitions. [2021-11-23 13:07:34,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 401 transitions, 1686 flow [2021-11-23 13:07:34,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 401 transitions, 1676 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-23 13:07:34,111 INFO L242 Difference]: Finished difference. Result has 367 places, 369 transitions, 1272 flow [2021-11-23 13:07:34,112 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1272, PETRI_PLACES=367, PETRI_TRANSITIONS=369} [2021-11-23 13:07:34,112 INFO L334 CegarLoopForPetriNet]: 315 programPoint places, 52 predicate places. [2021-11-23 13:07:34,112 INFO L470 AbstractCegarLoop]: Abstraction has has 367 places, 369 transitions, 1272 flow [2021-11-23 13:07:34,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:34,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:07:34,114 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:34,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:07:34,114 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 13:07:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1840056980, now seen corresponding path program 1 times [2021-11-23 13:07:34,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:34,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363518737] [2021-11-23 13:07:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:34,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:07:34,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:34,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363518737] [2021-11-23 13:07:34,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363518737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:07:34,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930911033] [2021-11-23 13:07:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:34,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:34,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:34,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:07:34,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae80498b-a34f-4cf5-bd3b-d64e2989e712/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:07:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:34,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-23 13:07:35,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:36,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-23 13:07:38,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 13:07:38,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 13:07:38,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 13:07:38,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 13:07:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:07:38,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:21,260 INFO L354 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-11-23 13:08:21,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1856934 treesize of output 1824173