./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39adc6d5c92d5d4be7746cac0afbcc96f3b450588f18f3eb2d03a3ab1e20a3ef ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:10:15,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:10:15,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:10:15,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:10:15,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:10:15,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:10:15,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:10:15,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:10:15,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:10:15,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:10:15,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:10:15,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:10:15,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:10:15,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:10:15,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:10:15,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:10:15,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:10:15,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:10:15,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:10:15,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:10:15,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:10:15,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:10:15,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:10:15,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:10:15,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:10:15,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:10:15,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:10:15,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:10:15,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:10:15,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:10:15,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:10:15,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:10:15,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:10:15,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:10:15,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:10:15,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:10:15,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:10:15,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:10:15,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:10:15,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:10:15,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:10:15,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:10:15,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:10:15,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:10:15,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:10:15,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:10:15,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:10:15,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:10:15,734 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:10:15,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:10:15,735 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:10:15,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:10:15,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:10:15,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:10:15,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:10:15,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:10:15,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:10:15,738 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:10:15,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:10:15,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:10:15,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:10:15,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:10:15,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:10:15,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:10:15,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:15,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:10:15,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:10:15,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:10:15,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:10:15,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:10:15,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:10:15,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:10:15,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:10:15,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:10:15,747 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_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39adc6d5c92d5d4be7746cac0afbcc96f3b450588f18f3eb2d03a3ab1e20a3ef [2021-10-28 23:10:16,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:10:16,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:10:16,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:10:16,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:10:16,103 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:10:16,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-10-28 23:10:16,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/data/ecebc3448/c1ec6fe340c04635b1b3d1c928718d55/FLAG891fc1475 [2021-10-28 23:10:16,869 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:10:16,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-10-28 23:10:16,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/data/ecebc3448/c1ec6fe340c04635b1b3d1c928718d55/FLAG891fc1475 [2021-10-28 23:10:17,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/data/ecebc3448/c1ec6fe340c04635b1b3d1c928718d55 [2021-10-28 23:10:17,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:10:17,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:10:17,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:17,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:10:17,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:10:17,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83f79e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17, skipping insertion in model container [2021-10-28 23:10:17,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:10:17,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:10:17,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/sv-benchmarks/c/psyco/psyco_abp_1-1.c[24818,24831] [2021-10-28 23:10:17,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:17,597 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:10:17,697 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/sv-benchmarks/c/psyco/psyco_abp_1-1.c[24818,24831] [2021-10-28 23:10:17,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:17,718 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:10:17,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17 WrapperNode [2021-10-28 23:10:17,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:17,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:10:17,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:10:17,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:10:17,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:10:17,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:10:17,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:10:17,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:10:17,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:10:17,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:10:17,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:10:17,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:10:17,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (1/1) ... [2021-10-28 23:10:17,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:17,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:10:17,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:10:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:10:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:10:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:10:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:10:19,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:10:19,163 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:10:19,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:19 BoogieIcfgContainer [2021-10-28 23:10:19,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:10:19,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:10:19,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:10:19,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:10:19,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:10:17" (1/3) ... [2021-10-28 23:10:19,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58317b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:19, skipping insertion in model container [2021-10-28 23:10:19,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:17" (2/3) ... [2021-10-28 23:10:19,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58317b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:19, skipping insertion in model container [2021-10-28 23:10:19,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:19" (3/3) ... [2021-10-28 23:10:19,184 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-1.c [2021-10-28 23:10:19,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:10:19,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:10:19,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:10:19,290 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:10:19,290 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:10:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 109 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:10:19,333 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:19,334 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:19,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1895078531, now seen corresponding path program 1 times [2021-10-28 23:10:19,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:19,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96960423] [2021-10-28 23:10:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:19,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:19,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:19,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96960423] [2021-10-28 23:10:19,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96960423] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:19,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:19,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:10:19,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054365815] [2021-10-28 23:10:19,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:10:19,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:19,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:10:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:10:19,607 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 109 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:19,643 INFO L93 Difference]: Finished difference Result 218 states and 420 transitions. [2021-10-28 23:10:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:10:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:10:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:19,659 INFO L225 Difference]: With dead ends: 218 [2021-10-28 23:10:19,659 INFO L226 Difference]: Without dead ends: 106 [2021-10-28 23:10:19,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:10:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-28 23:10:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-28 23:10:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 105 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 177 transitions. [2021-10-28 23:10:19,715 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 177 transitions. Word has length 10 [2021-10-28 23:10:19,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:19,716 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 177 transitions. [2021-10-28 23:10:19,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 177 transitions. [2021-10-28 23:10:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:10:19,718 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:19,719 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:19,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:10:19,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:19,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1914595175, now seen corresponding path program 1 times [2021-10-28 23:10:19,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:19,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784851454] [2021-10-28 23:10:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:19,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:19,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:19,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784851454] [2021-10-28 23:10:19,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784851454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:19,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:19,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:19,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106464518] [2021-10-28 23:10:19,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:19,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:19,810 INFO L87 Difference]: Start difference. First operand 106 states and 177 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:19,910 INFO L93 Difference]: Finished difference Result 214 states and 358 transitions. [2021-10-28 23:10:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:19,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 23:10:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:19,913 INFO L225 Difference]: With dead ends: 214 [2021-10-28 23:10:19,913 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 23:10:19,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 23:10:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-28 23:10:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.6697247706422018) internal successors, (182), 109 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 182 transitions. [2021-10-28 23:10:19,930 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 182 transitions. Word has length 11 [2021-10-28 23:10:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:19,931 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 182 transitions. [2021-10-28 23:10:19,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 182 transitions. [2021-10-28 23:10:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:10:19,933 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:19,933 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:19,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:10:19,934 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash 100490260, now seen corresponding path program 1 times [2021-10-28 23:10:19,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:19,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085645650] [2021-10-28 23:10:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:19,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:20,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:20,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085645650] [2021-10-28 23:10:20,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085645650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:20,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:20,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:20,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079596592] [2021-10-28 23:10:20,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:20,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:20,273 INFO L87 Difference]: Start difference. First operand 110 states and 182 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:20,480 INFO L93 Difference]: Finished difference Result 324 states and 540 transitions. [2021-10-28 23:10:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 23:10:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:20,484 INFO L225 Difference]: With dead ends: 324 [2021-10-28 23:10:20,484 INFO L226 Difference]: Without dead ends: 195 [2021-10-28 23:10:20,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:20,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-28 23:10:20,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2021-10-28 23:10:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.644808743169399) internal successors, (301), 183 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2021-10-28 23:10:20,506 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 17 [2021-10-28 23:10:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:20,507 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2021-10-28 23:10:20,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2021-10-28 23:10:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:10:20,509 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:20,510 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:20,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:10:20,510 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1571478032, now seen corresponding path program 1 times [2021-10-28 23:10:20,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:20,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293870819] [2021-10-28 23:10:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:20,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:20,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:20,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293870819] [2021-10-28 23:10:20,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293870819] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:20,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:20,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:20,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054076614] [2021-10-28 23:10:20,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:20,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:20,586 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:20,673 INFO L93 Difference]: Finished difference Result 314 states and 514 transitions. [2021-10-28 23:10:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:20,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 23:10:20,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:20,678 INFO L225 Difference]: With dead ends: 314 [2021-10-28 23:10:20,681 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 23:10:20,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 23:10:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2021-10-28 23:10:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.623076923076923) internal successors, (211), 130 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 211 transitions. [2021-10-28 23:10:20,705 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 211 transitions. Word has length 18 [2021-10-28 23:10:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:20,706 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 211 transitions. [2021-10-28 23:10:20,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 211 transitions. [2021-10-28 23:10:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:10:20,710 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:20,711 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:20,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:10:20,712 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1260642915, now seen corresponding path program 1 times [2021-10-28 23:10:20,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:20,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620652838] [2021-10-28 23:10:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:20,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:10:20,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:20,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620652838] [2021-10-28 23:10:20,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620652838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:20,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:20,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:20,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826013510] [2021-10-28 23:10:20,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:20,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:20,825 INFO L87 Difference]: Start difference. First operand 131 states and 211 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:20,869 INFO L93 Difference]: Finished difference Result 243 states and 390 transitions. [2021-10-28 23:10:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:20,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 23:10:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:20,872 INFO L225 Difference]: With dead ends: 243 [2021-10-28 23:10:20,872 INFO L226 Difference]: Without dead ends: 115 [2021-10-28 23:10:20,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:20,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-28 23:10:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2021-10-28 23:10:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5892857142857142) internal successors, (178), 112 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 178 transitions. [2021-10-28 23:10:20,898 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 178 transitions. Word has length 24 [2021-10-28 23:10:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:20,899 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 178 transitions. [2021-10-28 23:10:20,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 178 transitions. [2021-10-28 23:10:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:10:20,901 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:20,901 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:20,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:10:20,902 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1813922334, now seen corresponding path program 1 times [2021-10-28 23:10:20,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:20,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641738321] [2021-10-28 23:10:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:20,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:21,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:21,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641738321] [2021-10-28 23:10:21,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641738321] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:21,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861254761] [2021-10-28 23:10:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:21,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:21,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:21,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:21,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:10:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:21,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:10:21,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:21,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861254761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:21,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:21,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 23:10:21,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843103600] [2021-10-28 23:10:21,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:21,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:21,387 INFO L87 Difference]: Start difference. First operand 113 states and 178 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:21,604 INFO L93 Difference]: Finished difference Result 204 states and 323 transitions. [2021-10-28 23:10:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:21,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 23:10:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:21,607 INFO L225 Difference]: With dead ends: 204 [2021-10-28 23:10:21,608 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 23:10:21,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 23:10:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 178. [2021-10-28 23:10:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.6384180790960452) internal successors, (290), 177 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 290 transitions. [2021-10-28 23:10:21,632 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 290 transitions. Word has length 26 [2021-10-28 23:10:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:21,632 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 290 transitions. [2021-10-28 23:10:21,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 290 transitions. [2021-10-28 23:10:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:10:21,639 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:21,640 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:21,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:21,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:21,865 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash 408461028, now seen corresponding path program 1 times [2021-10-28 23:10:21,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:21,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486108383] [2021-10-28 23:10:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:21,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:22,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:22,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486108383] [2021-10-28 23:10:22,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486108383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:22,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607656601] [2021-10-28 23:10:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:22,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:22,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:22,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:10:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:22,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:10:22,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:22,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607656601] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:22,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:22,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-28 23:10:22,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698361101] [2021-10-28 23:10:22,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:10:22,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:10:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:22,546 INFO L87 Difference]: Start difference. First operand 178 states and 290 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:22,721 INFO L93 Difference]: Finished difference Result 387 states and 636 transitions. [2021-10-28 23:10:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:22,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 23:10:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:22,725 INFO L225 Difference]: With dead ends: 387 [2021-10-28 23:10:22,726 INFO L226 Difference]: Without dead ends: 230 [2021-10-28 23:10:22,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-28 23:10:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2021-10-28 23:10:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.6233183856502242) internal successors, (362), 223 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 362 transitions. [2021-10-28 23:10:22,736 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 362 transitions. Word has length 27 [2021-10-28 23:10:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:22,739 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 362 transitions. [2021-10-28 23:10:22,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 362 transitions. [2021-10-28 23:10:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:10:22,742 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:22,742 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:22,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:22,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 23:10:22,965 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1176409765, now seen corresponding path program 1 times [2021-10-28 23:10:22,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:22,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886276834] [2021-10-28 23:10:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:22,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:10:23,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:23,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886276834] [2021-10-28 23:10:23,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886276834] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:23,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:23,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:23,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598085522] [2021-10-28 23:10:23,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:23,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:23,020 INFO L87 Difference]: Start difference. First operand 224 states and 362 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:23,055 INFO L93 Difference]: Finished difference Result 409 states and 661 transitions. [2021-10-28 23:10:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-28 23:10:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:23,057 INFO L225 Difference]: With dead ends: 409 [2021-10-28 23:10:23,058 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 23:10:23,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 23:10:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-10-28 23:10:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5865384615384615) internal successors, (330), 208 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 330 transitions. [2021-10-28 23:10:23,067 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 330 transitions. Word has length 28 [2021-10-28 23:10:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:23,068 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 330 transitions. [2021-10-28 23:10:23,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 330 transitions. [2021-10-28 23:10:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 23:10:23,070 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:23,070 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:23,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:10:23,070 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash 989407566, now seen corresponding path program 1 times [2021-10-28 23:10:23,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:23,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78730109] [2021-10-28 23:10:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:23,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:10:23,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:23,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78730109] [2021-10-28 23:10:23,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78730109] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:23,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:23,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:23,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893234510] [2021-10-28 23:10:23,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:23,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:23,133 INFO L87 Difference]: Start difference. First operand 209 states and 330 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:23,168 INFO L93 Difference]: Finished difference Result 375 states and 600 transitions. [2021-10-28 23:10:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-28 23:10:23,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:23,179 INFO L225 Difference]: With dead ends: 375 [2021-10-28 23:10:23,180 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 23:10:23,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 23:10:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-10-28 23:10:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5769230769230769) internal successors, (328), 208 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 328 transitions. [2021-10-28 23:10:23,191 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 328 transitions. Word has length 36 [2021-10-28 23:10:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:23,192 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 328 transitions. [2021-10-28 23:10:23,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 328 transitions. [2021-10-28 23:10:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 23:10:23,195 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:23,195 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-10-28 23:10:23,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:10:23,196 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash -936850633, now seen corresponding path program 1 times [2021-10-28 23:10:23,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:23,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900334939] [2021-10-28 23:10:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:23,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:23,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:23,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900334939] [2021-10-28 23:10:23,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900334939] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:23,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887709255] [2021-10-28 23:10:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:23,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:23,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:23,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:10:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:10:23,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:10:23,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887709255] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:23,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:23,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-10-28 23:10:23,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085084014] [2021-10-28 23:10:23,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:10:23,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:10:23,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:23,960 INFO L87 Difference]: Start difference. First operand 209 states and 328 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:24,298 INFO L93 Difference]: Finished difference Result 490 states and 766 transitions. [2021-10-28 23:10:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:10:24,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-28 23:10:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:24,301 INFO L225 Difference]: With dead ends: 490 [2021-10-28 23:10:24,301 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 23:10:24,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:24,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 23:10:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 260. [2021-10-28 23:10:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.5675675675675675) internal successors, (406), 259 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 406 transitions. [2021-10-28 23:10:24,315 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 406 transitions. Word has length 37 [2021-10-28 23:10:24,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:24,318 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 406 transitions. [2021-10-28 23:10:24,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 406 transitions. [2021-10-28 23:10:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:10:24,322 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:24,322 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-10-28 23:10:24,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:24,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:24,546 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1033847947, now seen corresponding path program 1 times [2021-10-28 23:10:24,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:24,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10250793] [2021-10-28 23:10:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:24,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:10:24,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:24,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10250793] [2021-10-28 23:10:24,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10250793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:24,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016642915] [2021-10-28 23:10:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:24,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:24,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:24,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:24,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:10:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:24,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:10:24,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:10:25,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016642915] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:25,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:25,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 23:10:25,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322141678] [2021-10-28 23:10:25,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:25,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:25,020 INFO L87 Difference]: Start difference. First operand 260 states and 406 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:25,142 INFO L93 Difference]: Finished difference Result 274 states and 418 transitions. [2021-10-28 23:10:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-28 23:10:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:25,146 INFO L225 Difference]: With dead ends: 274 [2021-10-28 23:10:25,146 INFO L226 Difference]: Without dead ends: 262 [2021-10-28 23:10:25,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-28 23:10:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2021-10-28 23:10:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.5212355212355213) internal successors, (394), 259 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 394 transitions. [2021-10-28 23:10:25,158 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 394 transitions. Word has length 38 [2021-10-28 23:10:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:25,158 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 394 transitions. [2021-10-28 23:10:25,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 394 transitions. [2021-10-28 23:10:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 23:10:25,160 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:25,160 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-10-28 23:10:25,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:25,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:25,381 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:25,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1756734972, now seen corresponding path program 1 times [2021-10-28 23:10:25,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:25,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400457998] [2021-10-28 23:10:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:25,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:26,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:26,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400457998] [2021-10-28 23:10:26,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400457998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:26,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90780329] [2021-10-28 23:10:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:26,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:26,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:26,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:26,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:10:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:10:26,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:26,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90780329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:26,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:26,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2021-10-28 23:10:26,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789341414] [2021-10-28 23:10:26,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:10:26,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:10:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:26,668 INFO L87 Difference]: Start difference. First operand 260 states and 394 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:27,081 INFO L93 Difference]: Finished difference Result 274 states and 404 transitions. [2021-10-28 23:10:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:10:27,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-28 23:10:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:27,084 INFO L225 Difference]: With dead ends: 274 [2021-10-28 23:10:27,084 INFO L226 Difference]: Without dead ends: 272 [2021-10-28 23:10:27,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-28 23:10:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 261. [2021-10-28 23:10:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5192307692307692) internal successors, (395), 260 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2021-10-28 23:10:27,095 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 40 [2021-10-28 23:10:27,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:27,096 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2021-10-28 23:10:27,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2021-10-28 23:10:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 23:10:27,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:27,097 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-10-28 23:10:27,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:27,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 23:10:27,317 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1250552987, now seen corresponding path program 1 times [2021-10-28 23:10:27,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:27,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99700917] [2021-10-28 23:10:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:27,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:10:27,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:27,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99700917] [2021-10-28 23:10:27,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99700917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:27,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:27,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:27,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333943612] [2021-10-28 23:10:27,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:27,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:27,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:27,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:27,367 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:27,400 INFO L93 Difference]: Finished difference Result 461 states and 699 transitions. [2021-10-28 23:10:27,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:27,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 23:10:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:27,403 INFO L225 Difference]: With dead ends: 461 [2021-10-28 23:10:27,404 INFO L226 Difference]: Without dead ends: 245 [2021-10-28 23:10:27,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-28 23:10:27,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2021-10-28 23:10:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.487603305785124) internal successors, (360), 242 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 360 transitions. [2021-10-28 23:10:27,415 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 360 transitions. Word has length 41 [2021-10-28 23:10:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:27,416 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 360 transitions. [2021-10-28 23:10:27,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 360 transitions. [2021-10-28 23:10:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 23:10:27,418 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:27,418 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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] [2021-10-28 23:10:27,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:10:27,419 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1789960589, now seen corresponding path program 1 times [2021-10-28 23:10:27,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:27,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330587517] [2021-10-28 23:10:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:27,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 23:10:27,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:27,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330587517] [2021-10-28 23:10:27,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330587517] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:27,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:27,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:27,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490804983] [2021-10-28 23:10:27,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:27,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:27,511 INFO L87 Difference]: Start difference. First operand 243 states and 360 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:27,545 INFO L93 Difference]: Finished difference Result 333 states and 494 transitions. [2021-10-28 23:10:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:27,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-28 23:10:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:27,547 INFO L225 Difference]: With dead ends: 333 [2021-10-28 23:10:27,547 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 23:10:27,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 23:10:27,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-10-28 23:10:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4407894736842106) internal successors, (219), 152 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 219 transitions. [2021-10-28 23:10:27,556 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 219 transitions. Word has length 51 [2021-10-28 23:10:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:27,556 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 219 transitions. [2021-10-28 23:10:27,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 219 transitions. [2021-10-28 23:10:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 23:10:27,557 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:27,558 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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] [2021-10-28 23:10:27,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:10:27,558 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:27,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -608000180, now seen corresponding path program 1 times [2021-10-28 23:10:27,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:27,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546836645] [2021-10-28 23:10:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:27,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:10:27,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:27,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546836645] [2021-10-28 23:10:27,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546836645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:27,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035598239] [2021-10-28 23:10:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:27,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:27,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:27,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:27,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:10:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:27,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:10:27,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:10:28,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035598239] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:28,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:28,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 23:10:28,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697244572] [2021-10-28 23:10:28,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:28,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:28,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:28,359 INFO L87 Difference]: Start difference. First operand 153 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:28,458 INFO L93 Difference]: Finished difference Result 286 states and 418 transitions. [2021-10-28 23:10:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:28,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-28 23:10:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:28,461 INFO L225 Difference]: With dead ends: 286 [2021-10-28 23:10:28,461 INFO L226 Difference]: Without dead ends: 194 [2021-10-28 23:10:28,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-28 23:10:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2021-10-28 23:10:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.436842105263158) internal successors, (273), 190 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 273 transitions. [2021-10-28 23:10:28,473 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 273 transitions. Word has length 52 [2021-10-28 23:10:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:28,474 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 273 transitions. [2021-10-28 23:10:28,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 273 transitions. [2021-10-28 23:10:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-28 23:10:28,475 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:28,475 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 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] [2021-10-28 23:10:28,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:28,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 23:10:28,690 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1903289774, now seen corresponding path program 1 times [2021-10-28 23:10:28,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:28,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102393264] [2021-10-28 23:10:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:28,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:28,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:28,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102393264] [2021-10-28 23:10:28,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102393264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:28,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931359276] [2021-10-28 23:10:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:28,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:28,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:28,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:28,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:10:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:29,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:10:29,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:29,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931359276] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:29,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:29,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-28 23:10:29,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395274790] [2021-10-28 23:10:29,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:10:29,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:10:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:29,856 INFO L87 Difference]: Start difference. First operand 191 states and 273 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:30,023 INFO L93 Difference]: Finished difference Result 193 states and 274 transitions. [2021-10-28 23:10:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-28 23:10:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:30,025 INFO L225 Difference]: With dead ends: 193 [2021-10-28 23:10:30,026 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 23:10:30,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 23:10:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-10-28 23:10:30,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.431578947368421) internal successors, (272), 190 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 272 transitions. [2021-10-28 23:10:30,035 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 272 transitions. Word has length 56 [2021-10-28 23:10:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:30,036 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 272 transitions. [2021-10-28 23:10:30,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 272 transitions. [2021-10-28 23:10:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 23:10:30,037 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:30,038 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 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] [2021-10-28 23:10:30,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:30,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 23:10:30,255 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1029731011, now seen corresponding path program 1 times [2021-10-28 23:10:30,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:30,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782388624] [2021-10-28 23:10:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:30,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:30,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:30,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782388624] [2021-10-28 23:10:30,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782388624] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:30,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167086799] [2021-10-28 23:10:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:30,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:30,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:30,653 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:30,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:10:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:31,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:10:31,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:31,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167086799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:31,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:31,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-28 23:10:31,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118731724] [2021-10-28 23:10:31,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:31,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:31,891 INFO L87 Difference]: Start difference. First operand 191 states and 272 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:32,192 INFO L93 Difference]: Finished difference Result 197 states and 277 transitions. [2021-10-28 23:10:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:10:32,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-28 23:10:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:32,194 INFO L225 Difference]: With dead ends: 197 [2021-10-28 23:10:32,194 INFO L226 Difference]: Without dead ends: 195 [2021-10-28 23:10:32,195 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-28 23:10:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2021-10-28 23:10:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4293193717277486) internal successors, (273), 191 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 273 transitions. [2021-10-28 23:10:32,204 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 273 transitions. Word has length 63 [2021-10-28 23:10:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:32,204 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 273 transitions. [2021-10-28 23:10:32,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 273 transitions. [2021-10-28 23:10:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-28 23:10:32,206 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:32,206 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:32,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:32,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 23:10:32,421 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash 531523283, now seen corresponding path program 1 times [2021-10-28 23:10:32,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:32,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451837261] [2021-10-28 23:10:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:32,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:32,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:32,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451837261] [2021-10-28 23:10:32,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451837261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:32,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346222491] [2021-10-28 23:10:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:32,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:32,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:32,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:32,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:10:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:33,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:10:33,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:34,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346222491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:34,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:34,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-10-28 23:10:34,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126341833] [2021-10-28 23:10:34,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:10:34,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:10:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:34,030 INFO L87 Difference]: Start difference. First operand 192 states and 273 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:34,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:34,245 INFO L93 Difference]: Finished difference Result 301 states and 437 transitions. [2021-10-28 23:10:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:10:34,246 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-10-28 23:10:34,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:34,248 INFO L225 Difference]: With dead ends: 301 [2021-10-28 23:10:34,248 INFO L226 Difference]: Without dead ends: 211 [2021-10-28 23:10:34,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-28 23:10:34,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-10-28 23:10:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4238095238095239) internal successors, (299), 210 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 299 transitions. [2021-10-28 23:10:34,258 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 299 transitions. Word has length 73 [2021-10-28 23:10:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:34,259 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 299 transitions. [2021-10-28 23:10:34,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 299 transitions. [2021-10-28 23:10:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-28 23:10:34,260 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:34,261 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:34,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:34,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 23:10:34,485 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash 833926246, now seen corresponding path program 1 times [2021-10-28 23:10:34,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:34,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338806516] [2021-10-28 23:10:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:34,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:10:34,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:34,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338806516] [2021-10-28 23:10:34,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338806516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:34,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000610069] [2021-10-28 23:10:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:34,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:34,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:34,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:34,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:10:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:35,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:10:35,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 21 proven. 99 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 23:10:35,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000610069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:35,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:35,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-28 23:10:35,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788612180] [2021-10-28 23:10:35,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:35,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:35,941 INFO L87 Difference]: Start difference. First operand 211 states and 299 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:36,343 INFO L93 Difference]: Finished difference Result 329 states and 470 transitions. [2021-10-28 23:10:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:10:36,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-28 23:10:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:36,346 INFO L225 Difference]: With dead ends: 329 [2021-10-28 23:10:36,346 INFO L226 Difference]: Without dead ends: 239 [2021-10-28 23:10:36,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-10-28 23:10:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 230. [2021-10-28 23:10:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.4192139737991267) internal successors, (325), 229 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 325 transitions. [2021-10-28 23:10:36,357 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 325 transitions. Word has length 83 [2021-10-28 23:10:36,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:36,357 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 325 transitions. [2021-10-28 23:10:36,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 325 transitions. [2021-10-28 23:10:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 23:10:36,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:36,359 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:36,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:36,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:36,573 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash -112559507, now seen corresponding path program 1 times [2021-10-28 23:10:36,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:36,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985218973] [2021-10-28 23:10:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:36,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:37,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:37,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985218973] [2021-10-28 23:10:37,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985218973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:37,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798279740] [2021-10-28 23:10:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:37,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:37,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:37,201 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:37,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:10:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:37,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 23:10:37,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:39,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798279740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:39,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:39,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 23:10:39,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990645931] [2021-10-28 23:10:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:39,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:39,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:39,140 INFO L87 Difference]: Start difference. First operand 230 states and 325 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:39,362 INFO L93 Difference]: Finished difference Result 233 states and 328 transitions. [2021-10-28 23:10:39,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:10:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-28 23:10:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:39,365 INFO L225 Difference]: With dead ends: 233 [2021-10-28 23:10:39,365 INFO L226 Difference]: Without dead ends: 231 [2021-10-28 23:10:39,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-28 23:10:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-10-28 23:10:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4173913043478261) internal successors, (326), 230 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2021-10-28 23:10:39,384 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 86 [2021-10-28 23:10:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:39,385 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2021-10-28 23:10:39,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2021-10-28 23:10:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-28 23:10:39,387 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:39,387 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:39,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:39,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-28 23:10:39,606 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:39,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash -141600195, now seen corresponding path program 1 times [2021-10-28 23:10:39,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:39,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125044886] [2021-10-28 23:10:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:39,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 24 proven. 148 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 23:10:39,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:39,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125044886] [2021-10-28 23:10:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125044886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:39,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528830446] [2021-10-28 23:10:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:39,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:39,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:39,793 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:39,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 23:10:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:40,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 23:10:40,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 24 proven. 148 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 23:10:41,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528830446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:41,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:41,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 23:10:41,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816715065] [2021-10-28 23:10:41,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:10:41,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:10:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:41,488 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:41,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:41,654 INFO L93 Difference]: Finished difference Result 364 states and 525 transitions. [2021-10-28 23:10:41,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:10:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-28 23:10:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:41,657 INFO L225 Difference]: With dead ends: 364 [2021-10-28 23:10:41,657 INFO L226 Difference]: Without dead ends: 272 [2021-10-28 23:10:41,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-28 23:10:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2021-10-28 23:10:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4179104477611941) internal successors, (380), 268 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 380 transitions. [2021-10-28 23:10:41,671 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 380 transitions. Word has length 98 [2021-10-28 23:10:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:41,671 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 380 transitions. [2021-10-28 23:10:41,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 380 transitions. [2021-10-28 23:10:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 23:10:41,673 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:41,674 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:41,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:41,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:41,892 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1596344289, now seen corresponding path program 1 times [2021-10-28 23:10:41,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:41,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147089781] [2021-10-28 23:10:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:41,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:42,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:42,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147089781] [2021-10-28 23:10:42,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147089781] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:42,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253984811] [2021-10-28 23:10:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:42,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:42,221 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:42,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 23:10:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:43,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 23:10:43,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:44,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253984811] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:44,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:44,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-28 23:10:44,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474127614] [2021-10-28 23:10:44,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:10:44,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:44,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:10:44,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:44,365 INFO L87 Difference]: Start difference. First operand 269 states and 380 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:44,641 INFO L93 Difference]: Finished difference Result 271 states and 381 transitions. [2021-10-28 23:10:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:10:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-28 23:10:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:44,648 INFO L225 Difference]: With dead ends: 271 [2021-10-28 23:10:44,648 INFO L226 Difference]: Without dead ends: 269 [2021-10-28 23:10:44,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:44,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-28 23:10:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-10-28 23:10:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.414179104477612) internal successors, (379), 268 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 379 transitions. [2021-10-28 23:10:44,665 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 379 transitions. Word has length 102 [2021-10-28 23:10:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:44,666 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 379 transitions. [2021-10-28 23:10:44,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 379 transitions. [2021-10-28 23:10:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-28 23:10:44,672 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:44,673 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:44,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:44,893 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash -850579662, now seen corresponding path program 2 times [2021-10-28 23:10:44,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:44,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491672035] [2021-10-28 23:10:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:44,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 27 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:45,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:45,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491672035] [2021-10-28 23:10:45,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491672035] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:45,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645413839] [2021-10-28 23:10:45,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:10:45,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:45,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:45,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:45,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 23:10:46,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:10:46,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:10:46,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 23:10:46,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 27 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:48,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645413839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:48,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:48,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-10-28 23:10:48,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813886314] [2021-10-28 23:10:48,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:10:48,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:48,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:10:48,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:10:48,304 INFO L87 Difference]: Start difference. First operand 269 states and 379 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:48,783 INFO L93 Difference]: Finished difference Result 276 states and 385 transitions. [2021-10-28 23:10:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:10:48,784 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-10-28 23:10:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:48,787 INFO L225 Difference]: With dead ends: 276 [2021-10-28 23:10:48,787 INFO L226 Difference]: Without dead ends: 274 [2021-10-28 23:10:48,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:10:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-28 23:10:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2021-10-28 23:10:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.412639405204461) internal successors, (380), 269 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 380 transitions. [2021-10-28 23:10:48,799 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 380 transitions. Word has length 109 [2021-10-28 23:10:48,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:48,799 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 380 transitions. [2021-10-28 23:10:48,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 380 transitions. [2021-10-28 23:10:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-28 23:10:48,802 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:48,802 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:48,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:49,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 23:10:49,025 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash 990487682, now seen corresponding path program 2 times [2021-10-28 23:10:49,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:49,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466557922] [2021-10-28 23:10:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:49,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 30 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:49,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:49,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466557922] [2021-10-28 23:10:49,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466557922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:49,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088628495] [2021-10-28 23:10:49,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:10:49,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:49,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:49,496 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:49,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 23:10:50,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:10:50,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:10:50,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 23:10:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 30 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:51,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088628495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:51,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:51,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-10-28 23:10:51,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142705852] [2021-10-28 23:10:51,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 23:10:51,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 23:10:51,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:10:51,608 INFO L87 Difference]: Start difference. First operand 270 states and 380 transitions. Second operand has 22 states, 22 states have (on average 10.090909090909092) internal successors, (222), 22 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:52,072 INFO L93 Difference]: Finished difference Result 379 states and 544 transitions. [2021-10-28 23:10:52,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:10:52,073 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.090909090909092) internal successors, (222), 22 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-10-28 23:10:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:52,075 INFO L225 Difference]: With dead ends: 379 [2021-10-28 23:10:52,075 INFO L226 Difference]: Without dead ends: 289 [2021-10-28 23:10:52,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:10:52,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-28 23:10:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-10-28 23:10:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4097222222222223) internal successors, (406), 288 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 406 transitions. [2021-10-28 23:10:52,118 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 406 transitions. Word has length 119 [2021-10-28 23:10:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:52,119 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 406 transitions. [2021-10-28 23:10:52,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.090909090909092) internal successors, (222), 22 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 406 transitions. [2021-10-28 23:10:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-28 23:10:52,122 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:52,122 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:52,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:52,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-28 23:10:52,333 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1581114197, now seen corresponding path program 2 times [2021-10-28 23:10:52,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:52,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513499781] [2021-10-28 23:10:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:52,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 33 proven. 304 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 23:10:52,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:52,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513499781] [2021-10-28 23:10:52,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513499781] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:52,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781342317] [2021-10-28 23:10:52,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:10:52,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:52,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:52,690 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:52,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 23:10:53,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:10:53,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:10:53,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 23:10:53,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 33 proven. 298 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:10:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781342317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:54,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:54,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-10-28 23:10:54,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720696671] [2021-10-28 23:10:54,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:10:54,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:10:54,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:54,749 INFO L87 Difference]: Start difference. First operand 289 states and 406 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:55,053 INFO L93 Difference]: Finished difference Result 406 states and 576 transitions. [2021-10-28 23:10:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:10:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-10-28 23:10:55,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:55,056 INFO L225 Difference]: With dead ends: 406 [2021-10-28 23:10:55,056 INFO L226 Difference]: Without dead ends: 316 [2021-10-28 23:10:55,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:10:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-28 23:10:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 308. [2021-10-28 23:10:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.4071661237785016) internal successors, (432), 307 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 432 transitions. [2021-10-28 23:10:55,074 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 432 transitions. Word has length 129 [2021-10-28 23:10:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:55,075 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 432 transitions. [2021-10-28 23:10:55,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 432 transitions. [2021-10-28 23:10:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-28 23:10:55,078 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:55,078 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:55,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:55,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-28 23:10:55,293 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:55,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1451806434, now seen corresponding path program 2 times [2021-10-28 23:10:55,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:55,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869715026] [2021-10-28 23:10:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:55,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 33 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:56,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:56,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869715026] [2021-10-28 23:10:56,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869715026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:56,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500285082] [2021-10-28 23:10:56,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:10:56,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:56,149 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:56,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 23:10:57,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:10:57,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:10:57,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-28 23:10:57,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 33 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:59,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500285082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:59,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:59,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-28 23:10:59,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767911272] [2021-10-28 23:10:59,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:10:59,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:59,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:10:59,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:10:59,121 INFO L87 Difference]: Start difference. First operand 308 states and 432 transitions. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:59,419 INFO L93 Difference]: Finished difference Result 311 states and 435 transitions. [2021-10-28 23:10:59,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:10:59,420 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-10-28 23:10:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:59,422 INFO L225 Difference]: With dead ends: 311 [2021-10-28 23:10:59,422 INFO L226 Difference]: Without dead ends: 309 [2021-10-28 23:10:59,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:10:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-10-28 23:10:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-10-28 23:10:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.405844155844156) internal successors, (433), 308 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 433 transitions. [2021-10-28 23:10:59,435 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 433 transitions. Word has length 132 [2021-10-28 23:10:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:59,436 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 433 transitions. [2021-10-28 23:10:59,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:10:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 433 transitions. [2021-10-28 23:10:59,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-10-28 23:10:59,439 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:59,439 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:59,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:59,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:59,657 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:10:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash -722301074, now seen corresponding path program 2 times [2021-10-28 23:10:59,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:59,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491557498] [2021-10-28 23:10:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:59,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 36 proven. 379 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:10:59,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:59,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491557498] [2021-10-28 23:10:59,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491557498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:59,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354389858] [2021-10-28 23:10:59,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:10:59,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:59,913 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:59,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 23:11:01,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:11:01,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:01,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 23:11:01,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 36 proven. 379 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:11:02,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354389858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:02,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:02,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 23:11:02,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546437726] [2021-10-28 23:11:02,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:11:02,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:11:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:11:02,165 INFO L87 Difference]: Start difference. First operand 309 states and 433 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:02,369 INFO L93 Difference]: Finished difference Result 442 states and 632 transitions. [2021-10-28 23:11:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:11:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-10-28 23:11:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:02,373 INFO L225 Difference]: With dead ends: 442 [2021-10-28 23:11:02,374 INFO L226 Difference]: Without dead ends: 350 [2021-10-28 23:11:02,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:11:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-28 23:11:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 347. [2021-10-28 23:11:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.407514450867052) internal successors, (487), 346 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 487 transitions. [2021-10-28 23:11:02,391 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 487 transitions. Word has length 144 [2021-10-28 23:11:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:02,392 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 487 transitions. [2021-10-28 23:11:02,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 487 transitions. [2021-10-28 23:11:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-28 23:11:02,395 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:02,395 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:02,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:02,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 23:11:02,629 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:02,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash 38595792, now seen corresponding path program 2 times [2021-10-28 23:11:02,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:02,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749420324] [2021-10-28 23:11:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:02,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 36 proven. 417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:11:03,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:03,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749420324] [2021-10-28 23:11:03,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749420324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:03,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933720057] [2021-10-28 23:11:03,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:11:03,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:03,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:03,054 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:03,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 23:11:04,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:11:04,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:04,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-28 23:11:04,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 36 proven. 417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:11:05,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933720057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:05,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:05,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-10-28 23:11:05,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985101767] [2021-10-28 23:11:05,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 23:11:05,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 23:11:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-10-28 23:11:05,776 INFO L87 Difference]: Start difference. First operand 347 states and 487 transitions. Second operand has 25 states, 25 states have (on average 11.2) internal successors, (280), 25 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:06,149 INFO L93 Difference]: Finished difference Result 349 states and 488 transitions. [2021-10-28 23:11:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:11:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.2) internal successors, (280), 25 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-10-28 23:11:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:06,153 INFO L225 Difference]: With dead ends: 349 [2021-10-28 23:11:06,153 INFO L226 Difference]: Without dead ends: 347 [2021-10-28 23:11:06,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-10-28 23:11:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-28 23:11:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-10-28 23:11:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4046242774566473) internal successors, (486), 346 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 486 transitions. [2021-10-28 23:11:06,169 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 486 transitions. Word has length 148 [2021-10-28 23:11:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:06,169 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 486 transitions. [2021-10-28 23:11:06,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.2) internal successors, (280), 25 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:06,170 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 486 transitions. [2021-10-28 23:11:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-28 23:11:06,172 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:06,173 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 13, 9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:06,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:06,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 23:11:06,401 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:06,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash 71795041, now seen corresponding path program 3 times [2021-10-28 23:11:06,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:06,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18477369] [2021-10-28 23:11:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:06,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 39 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:11:07,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:07,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18477369] [2021-10-28 23:11:07,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18477369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:07,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321539383] [2021-10-28 23:11:07,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:11:07,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:07,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:07,332 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:07,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 23:11:09,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-28 23:11:09,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:09,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:11:09,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 248 proven. 32 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-10-28 23:11:09,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321539383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:09,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:09,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 19 [2021-10-28 23:11:09,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115448745] [2021-10-28 23:11:09,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:11:09,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:11:09,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:11:09,907 INFO L87 Difference]: Start difference. First operand 347 states and 486 transitions. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:10,738 INFO L93 Difference]: Finished difference Result 544 states and 765 transitions. [2021-10-28 23:11:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-28 23:11:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-10-28 23:11:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:10,741 INFO L225 Difference]: With dead ends: 544 [2021-10-28 23:11:10,742 INFO L226 Difference]: Without dead ends: 448 [2021-10-28 23:11:10,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2021-10-28 23:11:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-28 23:11:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 425. [2021-10-28 23:11:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.4103773584905661) internal successors, (598), 424 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 598 transitions. [2021-10-28 23:11:10,766 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 598 transitions. Word has length 155 [2021-10-28 23:11:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:10,766 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 598 transitions. [2021-10-28 23:11:10,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 598 transitions. [2021-10-28 23:11:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-10-28 23:11:10,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:10,770 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:10,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:10,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 23:11:10,998 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:10,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash 808412595, now seen corresponding path program 1 times [2021-10-28 23:11:10,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:10,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300342808] [2021-10-28 23:11:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:11,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 98 proven. 470 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 23:11:11,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:11,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300342808] [2021-10-28 23:11:11,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300342808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:11,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871318412] [2021-10-28 23:11:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:11,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:11,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:11,205 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:11,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:11:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:13,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:11:13,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 98 proven. 470 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 23:11:13,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871318412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:13,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:13,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-28 23:11:13,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807984851] [2021-10-28 23:11:13,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:11:13,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:13,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:11:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:11:13,656 INFO L87 Difference]: Start difference. First operand 425 states and 598 transitions. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:13,868 INFO L93 Difference]: Finished difference Result 927 states and 1318 transitions. [2021-10-28 23:11:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:11:13,869 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-10-28 23:11:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:13,877 INFO L225 Difference]: With dead ends: 927 [2021-10-28 23:11:13,877 INFO L226 Difference]: Without dead ends: 760 [2021-10-28 23:11:13,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:11:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-10-28 23:11:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 719. [2021-10-28 23:11:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 1.4080779944289694) internal successors, (1011), 718 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1011 transitions. [2021-10-28 23:11:13,910 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1011 transitions. Word has length 165 [2021-10-28 23:11:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:13,910 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1011 transitions. [2021-10-28 23:11:13,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1011 transitions. [2021-10-28 23:11:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-28 23:11:13,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:13,914 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 15, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:13,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:14,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:14,134 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1110215403, now seen corresponding path program 1 times [2021-10-28 23:11:14,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:14,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852073755] [2021-10-28 23:11:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:14,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 45 proven. 616 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-28 23:11:14,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:14,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852073755] [2021-10-28 23:11:14,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852073755] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:14,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197869492] [2021-10-28 23:11:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:14,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:14,801 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:14,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 23:11:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:16,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:11:16,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 23:11:17,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197869492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:11:17,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:11:17,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-10-28 23:11:17,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584100461] [2021-10-28 23:11:17,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:11:17,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:11:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:11:17,278 INFO L87 Difference]: Start difference. First operand 719 states and 1011 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:17,414 INFO L93 Difference]: Finished difference Result 860 states and 1208 transitions. [2021-10-28 23:11:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:11:17,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-10-28 23:11:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:17,421 INFO L225 Difference]: With dead ends: 860 [2021-10-28 23:11:17,421 INFO L226 Difference]: Without dead ends: 856 [2021-10-28 23:11:17,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:11:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-10-28 23:11:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 852. [2021-10-28 23:11:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.4101057579318448) internal successors, (1200), 851 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1200 transitions. [2021-10-28 23:11:17,451 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1200 transitions. Word has length 177 [2021-10-28 23:11:17,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:17,452 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1200 transitions. [2021-10-28 23:11:17,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1200 transitions. [2021-10-28 23:11:17,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-28 23:11:17,455 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:17,456 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 15, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:17,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:17,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:17,681 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash -45491697, now seen corresponding path program 3 times [2021-10-28 23:11:17,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:17,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088829004] [2021-10-28 23:11:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:17,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 45 proven. 656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:11:18,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:18,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088829004] [2021-10-28 23:11:18,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088829004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:18,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906908704] [2021-10-28 23:11:18,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:11:18,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:18,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:18,573 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:18,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 23:11:20,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-10-28 23:11:20,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:20,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-28 23:11:20,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 554 proven. 137 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:11:21,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906908704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:21,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:21,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-10-28 23:11:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983989003] [2021-10-28 23:11:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-28 23:11:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-28 23:11:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-10-28 23:11:21,909 INFO L87 Difference]: Start difference. First operand 852 states and 1200 transitions. Second operand has 32 states, 32 states have (on average 10.59375) internal successors, (339), 32 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:22,804 INFO L93 Difference]: Finished difference Result 867 states and 1213 transitions. [2021-10-28 23:11:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-28 23:11:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.59375) internal successors, (339), 32 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-10-28 23:11:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:22,810 INFO L225 Difference]: With dead ends: 867 [2021-10-28 23:11:22,811 INFO L226 Difference]: Without dead ends: 865 [2021-10-28 23:11:22,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=310, Invalid=1496, Unknown=0, NotChecked=0, Total=1806 [2021-10-28 23:11:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-10-28 23:11:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 852. [2021-10-28 23:11:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.408930669800235) internal successors, (1199), 851 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1199 transitions. [2021-10-28 23:11:22,842 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1199 transitions. Word has length 178 [2021-10-28 23:11:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:22,842 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1199 transitions. [2021-10-28 23:11:22,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.59375) internal successors, (339), 32 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1199 transitions. [2021-10-28 23:11:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-10-28 23:11:22,846 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:22,847 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 12, 12, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:22,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:23,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-28 23:11:23,065 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1121314851, now seen corresponding path program 1 times [2021-10-28 23:11:23,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:23,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521264954] [2021-10-28 23:11:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:23,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 125 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 23:11:23,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:23,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521264954] [2021-10-28 23:11:23,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521264954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:23,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996612525] [2021-10-28 23:11:23,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:23,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:23,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:23,283 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:23,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 23:11:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:25,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:11:25,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 125 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 23:11:25,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996612525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:25,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:25,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-28 23:11:25,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649801448] [2021-10-28 23:11:25,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:11:25,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:11:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:11:25,791 INFO L87 Difference]: Start difference. First operand 852 states and 1199 transitions. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:26,012 INFO L93 Difference]: Finished difference Result 1435 states and 2015 transitions. [2021-10-28 23:11:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:11:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-10-28 23:11:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:26,020 INFO L225 Difference]: With dead ends: 1435 [2021-10-28 23:11:26,020 INFO L226 Difference]: Without dead ends: 959 [2021-10-28 23:11:26,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:11:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-10-28 23:11:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 930. [2021-10-28 23:11:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.411194833153929) internal successors, (1311), 929 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1311 transitions. [2021-10-28 23:11:26,064 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1311 transitions. Word has length 193 [2021-10-28 23:11:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:26,065 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1311 transitions. [2021-10-28 23:11:26,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1311 transitions. [2021-10-28 23:11:26,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-28 23:11:26,067 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:26,068 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 12, 12, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:26,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:26,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-28 23:11:26,293 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -608595007, now seen corresponding path program 3 times [2021-10-28 23:11:26,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:26,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020902671] [2021-10-28 23:11:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:26,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 48 proven. 772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:11:26,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:26,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020902671] [2021-10-28 23:11:26,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020902671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:26,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198853951] [2021-10-28 23:11:26,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:11:26,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:26,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:26,813 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:26,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 23:11:28,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-10-28 23:11:28,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:28,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-28 23:11:28,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 478 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:11:30,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198853951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:30,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:30,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2021-10-28 23:11:30,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167603140] [2021-10-28 23:11:30,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-28 23:11:30,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-28 23:11:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 23:11:30,821 INFO L87 Difference]: Start difference. First operand 930 states and 1311 transitions. Second operand has 35 states, 35 states have (on average 10.82857142857143) internal successors, (379), 35 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:31,466 INFO L93 Difference]: Finished difference Result 934 states and 1313 transitions. [2021-10-28 23:11:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 23:11:31,467 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 10.82857142857143) internal successors, (379), 35 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-10-28 23:11:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:31,474 INFO L225 Difference]: With dead ends: 934 [2021-10-28 23:11:31,474 INFO L226 Difference]: Without dead ends: 932 [2021-10-28 23:11:31,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2021-10-28 23:11:31,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-10-28 23:11:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 930. [2021-10-28 23:11:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.4090419806243273) internal successors, (1309), 929 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1309 transitions. [2021-10-28 23:11:31,510 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1309 transitions. Word has length 194 [2021-10-28 23:11:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:31,510 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1309 transitions. [2021-10-28 23:11:31,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.82857142857143) internal successors, (379), 35 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1309 transitions. [2021-10-28 23:11:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-10-28 23:11:31,513 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:31,513 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 13, 13, 8, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:31,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:31,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:31,735 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2110169374, now seen corresponding path program 2 times [2021-10-28 23:11:31,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:31,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298157462] [2021-10-28 23:11:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:31,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 128 proven. 842 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-28 23:11:32,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:32,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298157462] [2021-10-28 23:11:32,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298157462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:32,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340731118] [2021-10-28 23:11:32,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:11:32,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:32,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:32,071 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:32,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 23:11:34,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:11:34,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:34,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:11:34,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 128 proven. 842 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-28 23:11:34,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340731118] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:34,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:34,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-28 23:11:34,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324702309] [2021-10-28 23:11:34,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:11:34,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:11:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:11:34,847 INFO L87 Difference]: Start difference. First operand 930 states and 1309 transitions. Second operand has 13 states, 13 states have (on average 14.384615384615385) internal successors, (187), 13 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:35,066 INFO L93 Difference]: Finished difference Result 1125 states and 1564 transitions. [2021-10-28 23:11:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:11:35,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.384615384615385) internal successors, (187), 13 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-10-28 23:11:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:35,074 INFO L225 Difference]: With dead ends: 1125 [2021-10-28 23:11:35,074 INFO L226 Difference]: Without dead ends: 1040 [2021-10-28 23:11:35,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:11:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-10-28 23:11:35,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1008. [2021-10-28 23:11:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 1.4061569016881827) internal successors, (1416), 1007 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1416 transitions. [2021-10-28 23:11:35,114 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1416 transitions. Word has length 211 [2021-10-28 23:11:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:35,115 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1416 transitions. [2021-10-28 23:11:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.384615384615385) internal successors, (187), 13 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1416 transitions. [2021-10-28 23:11:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-10-28 23:11:35,118 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:35,118 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 15, 15, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:35,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-28 23:11:35,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:35,333 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:35,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash -397716270, now seen corresponding path program 2 times [2021-10-28 23:11:35,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:35,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178358483] [2021-10-28 23:11:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:35,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 159 proven. 1078 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-28 23:11:35,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:35,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178358483] [2021-10-28 23:11:35,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178358483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:35,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540931425] [2021-10-28 23:11:35,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:11:35,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:35,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:35,720 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:35,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 23:11:38,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:11:38,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:11:38,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 159 proven. 1078 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-28 23:11:38,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540931425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:38,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:38,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-28 23:11:38,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5712935] [2021-10-28 23:11:38,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:11:38,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:11:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:11:38,940 INFO L87 Difference]: Start difference. First operand 1008 states and 1416 transitions. Second operand has 14 states, 14 states have (on average 15.0) internal successors, (210), 14 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:39,176 INFO L93 Difference]: Finished difference Result 1675 states and 2346 transitions. [2021-10-28 23:11:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:11:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.0) internal successors, (210), 14 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2021-10-28 23:11:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:39,184 INFO L225 Difference]: With dead ends: 1675 [2021-10-28 23:11:39,185 INFO L226 Difference]: Without dead ends: 1121 [2021-10-28 23:11:39,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:11:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-10-28 23:11:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1086. [2021-10-28 23:11:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.407373271889401) internal successors, (1527), 1085 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1527 transitions. [2021-10-28 23:11:39,228 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1527 transitions. Word has length 239 [2021-10-28 23:11:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:39,229 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1527 transitions. [2021-10-28 23:11:39,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.0) internal successors, (210), 14 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1527 transitions. [2021-10-28 23:11:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-10-28 23:11:39,232 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:39,232 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 16, 16, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:39,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:39,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 23:11:39,449 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:39,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:39,449 INFO L85 PathProgramCache]: Analyzing trace with hash 220503505, now seen corresponding path program 3 times [2021-10-28 23:11:39,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:39,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124165106] [2021-10-28 23:11:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:39,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 158 proven. 1322 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-28 23:11:39,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:39,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124165106] [2021-10-28 23:11:39,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124165106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:39,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57123849] [2021-10-28 23:11:39,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:11:39,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:39,833 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:39,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 23:11:42,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-10-28 23:11:42,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:42,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 23:11:42,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 158 proven. 1322 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-28 23:11:42,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57123849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:42,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:42,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-28 23:11:42,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248626604] [2021-10-28 23:11:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:11:42,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:11:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:11:42,912 INFO L87 Difference]: Start difference. First operand 1086 states and 1527 transitions. Second operand has 15 states, 15 states have (on average 15.0) internal successors, (225), 15 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:43,137 INFO L93 Difference]: Finished difference Result 1287 states and 1786 transitions. [2021-10-28 23:11:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:11:43,138 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.0) internal successors, (225), 15 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2021-10-28 23:11:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:43,145 INFO L225 Difference]: With dead ends: 1287 [2021-10-28 23:11:43,145 INFO L226 Difference]: Without dead ends: 1202 [2021-10-28 23:11:43,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:11:43,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-10-28 23:11:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1164. [2021-10-28 23:11:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 1.404987102321582) internal successors, (1634), 1163 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1634 transitions. [2021-10-28 23:11:43,187 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1634 transitions. Word has length 257 [2021-10-28 23:11:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:43,188 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 1634 transitions. [2021-10-28 23:11:43,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.0) internal successors, (225), 15 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1634 transitions. [2021-10-28 23:11:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-10-28 23:11:43,191 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:43,191 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:43,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:43,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 23:11:43,405 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash 530835265, now seen corresponding path program 3 times [2021-10-28 23:11:43,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:43,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896560413] [2021-10-28 23:11:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:43,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 193 proven. 1614 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-28 23:11:43,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:43,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896560413] [2021-10-28 23:11:43,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896560413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:43,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205348622] [2021-10-28 23:11:43,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:11:43,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:43,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:43,857 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:43,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 23:11:45,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 23:11:45,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:45,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:11:45,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 469 proven. 4 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2021-10-28 23:11:46,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205348622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:46,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:46,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2021-10-28 23:11:46,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215658723] [2021-10-28 23:11:46,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:11:46,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:11:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:11:46,781 INFO L87 Difference]: Start difference. First operand 1164 states and 1634 transitions. Second operand has 19 states, 19 states have (on average 15.631578947368421) internal successors, (297), 19 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:47,613 INFO L93 Difference]: Finished difference Result 1312 states and 1833 transitions. [2021-10-28 23:11:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-28 23:11:47,614 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.631578947368421) internal successors, (297), 19 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2021-10-28 23:11:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:47,617 INFO L225 Difference]: With dead ends: 1312 [2021-10-28 23:11:47,618 INFO L226 Difference]: Without dead ends: 680 [2021-10-28 23:11:47,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=591, Invalid=1761, Unknown=0, NotChecked=0, Total=2352 [2021-10-28 23:11:47,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-10-28 23:11:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 659. [2021-10-28 23:11:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.378419452887538) internal successors, (907), 658 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 907 transitions. [2021-10-28 23:11:47,643 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 907 transitions. Word has length 285 [2021-10-28 23:11:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:47,643 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 907 transitions. [2021-10-28 23:11:47,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.631578947368421) internal successors, (297), 19 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:47,644 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 907 transitions. [2021-10-28 23:11:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-10-28 23:11:47,647 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:47,648 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 22, 22, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:47,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:47,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-28 23:11:47,869 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash -689263377, now seen corresponding path program 4 times [2021-10-28 23:11:47,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:47,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360081192] [2021-10-28 23:11:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:47,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:11:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2894 backedges. 218 proven. 2606 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-28 23:11:48,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:11:48,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360081192] [2021-10-28 23:11:48,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360081192] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:48,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954921577] [2021-10-28 23:11:48,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:11:48,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:11:48,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:11:48,424 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:11:48,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 23:11:50,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:11:50,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:11:50,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 23:11:50,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:11:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2894 backedges. 218 proven. 2606 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-28 23:11:51,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954921577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:11:51,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:11:51,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-28 23:11:51,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020536398] [2021-10-28 23:11:51,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:11:51,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:11:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:11:51,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:11:51,996 INFO L87 Difference]: Start difference. First operand 659 states and 907 transitions. Second operand has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:52,298 INFO L93 Difference]: Finished difference Result 865 states and 1192 transitions. [2021-10-28 23:11:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:11:52,299 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349 [2021-10-28 23:11:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:52,305 INFO L225 Difference]: With dead ends: 865 [2021-10-28 23:11:52,305 INFO L226 Difference]: Without dead ends: 780 [2021-10-28 23:11:52,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:11:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-28 23:11:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 737. [2021-10-28 23:11:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.377717391304348) internal successors, (1014), 736 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1014 transitions. [2021-10-28 23:11:52,331 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1014 transitions. Word has length 349 [2021-10-28 23:11:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:52,332 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1014 transitions. [2021-10-28 23:11:52,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:11:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1014 transitions. [2021-10-28 23:11:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-10-28 23:11:52,336 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:52,336 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 25, 25, 16, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:52,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:52,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-28 23:11:52,553 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:11:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:52,553 INFO L85 PathProgramCache]: Analyzing trace with hash 49372446, now seen corresponding path program 5 times [2021-10-28 23:11:52,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:11:52,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334931684] [2021-10-28 23:11:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:52,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:11:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:54,380 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:56,028 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:11:56,028 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:11:56,030 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:11:56,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 23:11:56,038 INFO L731 BasicCegarLoop]: Path program histogram: [5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:56,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:11:56,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:11:56 BoogieIcfgContainer [2021-10-28 23:11:56,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:11:56,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:11:56,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:11:56,395 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:11:56,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:19" (3/4) ... [2021-10-28 23:11:56,399 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:11:56,766 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:11:56,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:11:56,770 INFO L168 Benchmark]: Toolchain (without parser) took 99634.30 ms. Allocated memory was 86.0 MB in the beginning and 813.7 MB in the end (delta: 727.7 MB). Free memory was 47.3 MB in the beginning and 331.3 MB in the end (delta: -284.1 MB). Peak memory consumption was 443.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:56,771 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 64.3 MB in the beginning and 64.2 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:11:56,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.24 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 72.6 MB in the end (delta: -25.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:56,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.28 ms. Allocated memory is still 104.9 MB. Free memory was 72.6 MB in the beginning and 67.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:56,773 INFO L168 Benchmark]: Boogie Preprocessor took 83.38 ms. Allocated memory is still 104.9 MB. Free memory was 67.9 MB in the beginning and 65.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:56,775 INFO L168 Benchmark]: RCFGBuilder took 1260.83 ms. Allocated memory is still 104.9 MB. Free memory was 65.0 MB in the beginning and 76.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:56,776 INFO L168 Benchmark]: TraceAbstraction took 97224.43 ms. Allocated memory was 104.9 MB in the beginning and 813.7 MB in the end (delta: 708.8 MB). Free memory was 76.3 MB in the beginning and 376.8 MB in the end (delta: -300.5 MB). Peak memory consumption was 592.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:56,776 INFO L168 Benchmark]: Witness Printer took 372.16 ms. Allocated memory is still 813.7 MB. Free memory was 376.8 MB in the beginning and 331.3 MB in the end (delta: 45.4 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:56,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory was 64.3 MB in the beginning and 64.2 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 584.24 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 72.6 MB in the end (delta: -25.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.28 ms. Allocated memory is still 104.9 MB. Free memory was 72.6 MB in the beginning and 67.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.38 ms. Allocated memory is still 104.9 MB. Free memory was 67.9 MB in the beginning and 65.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1260.83 ms. Allocated memory is still 104.9 MB. Free memory was 65.0 MB in the beginning and 76.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97224.43 ms. Allocated memory was 104.9 MB in the beginning and 813.7 MB in the end (delta: 708.8 MB). Free memory was 76.3 MB in the beginning and 376.8 MB in the end (delta: -300.5 MB). Peak memory consumption was 592.0 MB. Max. memory is 16.1 GB. * Witness Printer took 372.16 ms. Allocated memory is still 813.7 MB. Free memory was 376.8 MB in the beginning and 331.3 MB in the end (delta: 45.4 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 571]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] int m_Protocol = 1; [L8] int m_msg_2 = 2; [L9] int m_recv_ack_2 = 3; [L10] int m_msg_1_1 = 4; [L11] int m_msg_1_2 = 5; [L12] int m_recv_ack_1_1 = 6; [L13] int m_recv_ack_1_2 = 7; VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L18] int q = 0; [L19] int method_id; [L22] int this_expect = 0; [L23] int this_buffer_empty = 0; VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND TRUE q == 0 [L46] COND TRUE __VERIFIER_nondet_int() [L50] method_id = 1 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L52] COND FALSE !(0) [L56] q = 1 [L58] this_expect=0 [L58] this_buffer_empty=1 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L292] q = 4 [L294] this_expect=this_expect [L294] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND TRUE q == 4 [L366] COND FALSE !(__VERIFIER_nondet_int()) [L382] COND FALSE !(__VERIFIER_nondet_int()) [L398] COND FALSE !(__VERIFIER_nondet_int()) [L414] COND TRUE __VERIFIER_nondet_int() [L416] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L418] method_id = 5 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L420] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L424] q = 5 [L426] this_expect=(this_expect + 1) [L426] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND FALSE !(q == 3) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L365] COND FALSE !(q == 4) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L465] COND TRUE q == 5 [L466] COND FALSE !(__VERIFIER_nondet_int()) [L482] COND FALSE !(__VERIFIER_nondet_int()) [L498] COND FALSE !(__VERIFIER_nondet_int()) [L514] COND FALSE !(__VERIFIER_nondet_int()) [L530] COND FALSE !(__VERIFIER_nondet_int()) [L546] COND TRUE __VERIFIER_nondet_int() [L548] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L550] method_id = 7 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L552] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L556] q = 1 [L558] this_expect=this_expect [L558] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND TRUE q == 1 [L66] COND TRUE __VERIFIER_nondet_int() [L68] COND TRUE !((P1 % 2) != (0 % 2)) [L70] method_id = 2 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L72] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L76] q = 3 [L78] this_expect=(this_expect + 1) [L78] this_buffer_empty=(1 - this_buffer_empty) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND TRUE this_expect > 16 [L41] this_expect = -16 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L45] COND FALSE !(q == 0) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L65] COND FALSE !(q == 1) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L165] COND FALSE !(q == 2) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L265] COND TRUE q == 3 [L266] COND FALSE !(__VERIFIER_nondet_int()) [L282] COND TRUE __VERIFIER_nondet_int() [L284] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L286] method_id = 3 VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L288] COND TRUE (((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2)))) VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] [L571] reach_error() VAL [m_msg_1_1=4, m_msg_1_2=5, m_msg_2=2, m_Protocol=1, m_recv_ack_1_1=6, m_recv_ack_1_2=7, m_recv_ack_2=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 96.7s, OverallIterations: 40, TraceHistogramMax: 35, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8454 SDtfs, 16899 SDslu, 46330 SDs, 0 SdLazy, 7479 SolverSat, 862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4458 GetRequests, 4017 SyntacticMatches, 27 SemanticMatches, 414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1164occurred in iteration=37, InterpolantAutomatonStates: 413, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 39 MinimizatonAttempts, 385 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 8.4s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 8561 NumberOfCodeBlocks, 8239 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 8097 ConstructedInterpolants, 0 QuantifiedInterpolants, 47754 SizeOfPredicates, 63 NumberOfNonLiveVariables, 22562 ConjunctsInSsa, 698 ConjunctsInUnsatCore, 69 InterpolantComputations, 10 PerfectInterpolantSequences, 7912/31839 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:11:56,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0cd890b-7790-42ba-a631-6722ae9ada4c/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...