./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --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_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/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_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/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_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:32:00,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:32:00,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:32:00,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:32:00,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:32:00,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:32:00,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:32:00,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:32:00,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:32:00,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:32:00,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:32:00,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:32:00,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:32:00,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:32:00,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:32:00,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:32:00,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:32:00,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:32:00,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:32:00,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:32:00,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:32:00,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:32:00,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:32:00,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:32:00,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:32:00,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:32:00,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:32:00,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:32:00,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:32:00,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:32:00,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:32:00,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:32:00,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:32:00,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:32:00,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:32:00,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:32:00,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:32:00,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:32:00,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:32:00,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:32:00,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:32:00,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:32:00,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:32:00,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:32:00,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:32:00,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:32:00,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:32:00,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:32:00,179 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:32:00,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:32:00,179 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:32:00,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:32:00,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:32:00,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:32:00,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:32:00,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:32:00,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:32:00,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:32:00,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:32:00,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:32:00,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:32:00,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:32:00,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:32:00,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:32:00,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:32:00,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:32:00,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:32:00,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:32:00,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:32:00,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:32:00,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:32:00,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:32:00,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:32:00,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:32:00,186 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_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-10-28 23:32:00,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:32:00,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:32:00,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:32:00,493 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:32:00,493 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:32:00,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-new/nested-1.i [2021-10-28 23:32:00,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/data/4cf6143ad/1138784dfa494a869fdb9d15ad736ea8/FLAG859310f8e [2021-10-28 23:32:01,087 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:32:01,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/sv-benchmarks/c/loop-new/nested-1.i [2021-10-28 23:32:01,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/data/4cf6143ad/1138784dfa494a869fdb9d15ad736ea8/FLAG859310f8e [2021-10-28 23:32:01,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/data/4cf6143ad/1138784dfa494a869fdb9d15ad736ea8 [2021-10-28 23:32:01,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:32:01,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:32:01,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:32:01,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:32:01,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:32:01,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de1b29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01, skipping insertion in model container [2021-10-28 23:32:01,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:32:01,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:32:01,677 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_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-28 23:32:01,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:32:01,696 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:32:01,706 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_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-28 23:32:01,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:32:01,722 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:32:01,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01 WrapperNode [2021-10-28 23:32:01,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:32:01,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:32:01,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:32:01,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:32:01,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:32:01,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:32:01,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:32:01,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:32:01,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:32:01,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:32:01,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:32:01,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:32:01,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (1/1) ... [2021-10-28 23:32:01,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:32:01,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:01,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:32:01,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:32:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:32:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:32:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:32:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:32:02,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:32:02,051 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 23:32:02,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:02 BoogieIcfgContainer [2021-10-28 23:32:02,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:32:02,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:32:02,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:32:02,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:32:02,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:32:01" (1/3) ... [2021-10-28 23:32:02,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c34a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:32:02, skipping insertion in model container [2021-10-28 23:32:02,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:01" (2/3) ... [2021-10-28 23:32:02,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c34a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:32:02, skipping insertion in model container [2021-10-28 23:32:02,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:02" (3/3) ... [2021-10-28 23:32:02,062 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-1.i [2021-10-28 23:32:02,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:32:02,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:32:02,117 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:32:02,124 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 23:32:02,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:32:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 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 23:32:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:32:02,143 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:02,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:02,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:02,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 179613278, now seen corresponding path program 1 times [2021-10-28 23:32:02,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:02,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897137063] [2021-10-28 23:32:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:02,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:02,346 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 23:32:02,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:02,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897137063] [2021-10-28 23:32:02,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897137063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:02,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:02,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:32:02,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291657617] [2021-10-28 23:32:02,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:32:02,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:32:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:02,371 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 23:32:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:02,407 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-10-28 23:32:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:32:02,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-28 23:32:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:02,416 INFO L225 Difference]: With dead ends: 35 [2021-10-28 23:32:02,417 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 23:32:02,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:02,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 23:32:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-10-28 23:32:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 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 23:32:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-28 23:32:02,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-10-28 23:32:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:02,466 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-28 23:32:02,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 23:32:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-28 23:32:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:32:02,468 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:02,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:02,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:32:02,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:02,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash 754200042, now seen corresponding path program 1 times [2021-10-28 23:32:02,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:02,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682358826] [2021-10-28 23:32:02,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:02,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:02,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:02,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682358826] [2021-10-28 23:32:02,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682358826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:02,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:02,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:32:02,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312314354] [2021-10-28 23:32:02,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:32:02,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:32:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:02,588 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 23:32:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:02,631 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-28 23:32:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:32:02,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 23:32:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:02,633 INFO L225 Difference]: With dead ends: 23 [2021-10-28 23:32:02,633 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 23:32:02,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 23:32:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-28 23:32:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 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 23:32:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-28 23:32:02,640 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-28 23:32:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:02,640 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-28 23:32:02,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 23:32:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-28 23:32:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:32:02,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:02,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:02,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:32:02,645 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:02,647 INFO L85 PathProgramCache]: Analyzing trace with hash -902976276, now seen corresponding path program 1 times [2021-10-28 23:32:02,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:02,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932224431] [2021-10-28 23:32:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:02,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:02,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:02,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932224431] [2021-10-28 23:32:02,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932224431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:02,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585331620] [2021-10-28 23:32:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:02,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:02,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:02,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:02,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:32:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:02,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:32:02,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:02,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585331620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:02,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:02,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-28 23:32:02,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474237548] [2021-10-28 23:32:02,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:32:02,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:32:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:32:02,999 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 23:32:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:03,043 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-28 23:32:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:32:03,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 13 [2021-10-28 23:32:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:03,045 INFO L225 Difference]: With dead ends: 26 [2021-10-28 23:32:03,045 INFO L226 Difference]: Without dead ends: 17 [2021-10-28 23:32:03,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:32:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-28 23:32:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-28 23:32:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 23:32:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-28 23:32:03,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2021-10-28 23:32:03,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:03,051 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-28 23:32:03,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 23:32:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-28 23:32:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:32:03,052 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:03,052 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:03,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:03,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:03,263 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -16551058, now seen corresponding path program 2 times [2021-10-28 23:32:03,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:03,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265911380] [2021-10-28 23:32:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:03,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:03,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:03,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265911380] [2021-10-28 23:32:03,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265911380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:03,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319218917] [2021-10-28 23:32:03,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:32:03,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:03,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:03,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:03,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:32:03,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:32:03,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:03,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:32:03,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:03,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319218917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:03,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:03,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-28 23:32:03,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598688913] [2021-10-28 23:32:03,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:32:03,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:03,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:32:03,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:32:03,583 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:32:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:03,627 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-10-28 23:32:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:32:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 15 [2021-10-28 23:32:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:03,629 INFO L225 Difference]: With dead ends: 30 [2021-10-28 23:32:03,630 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 23:32:03,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:32:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 23:32:03,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-28 23:32:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 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 23:32:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-28 23:32:03,639 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-10-28 23:32:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:03,640 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-28 23:32:03,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 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 23:32:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-28 23:32:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:32:03,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:03,643 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:03,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:03,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:03,860 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1434558832, now seen corresponding path program 3 times [2021-10-28 23:32:03,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:03,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272508496] [2021-10-28 23:32:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:03,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:03,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:03,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272508496] [2021-10-28 23:32:03,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272508496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:03,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904801507] [2021-10-28 23:32:03,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:32:03,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:03,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:03,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:04,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:32:04,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 23:32:04,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:04,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:32:04,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 23:32:04,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904801507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:04,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:04,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2021-10-28 23:32:04,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759891671] [2021-10-28 23:32:04,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:32:04,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:32:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:32:04,229 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 23:32:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:04,526 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-10-28 23:32:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:32:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 23:32:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:04,527 INFO L225 Difference]: With dead ends: 57 [2021-10-28 23:32:04,528 INFO L226 Difference]: Without dead ends: 44 [2021-10-28 23:32:04,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=393, Unknown=0, NotChecked=0, Total=600 [2021-10-28 23:32:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-28 23:32:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-28 23:32:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 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 23:32:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-28 23:32:04,536 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2021-10-28 23:32:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:04,536 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-28 23:32:04,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 23:32:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-28 23:32:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:32:04,538 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:04,538 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:04,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-28 23:32:04,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:04,752 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:04,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1316009506, now seen corresponding path program 4 times [2021-10-28 23:32:04,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:04,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582235064] [2021-10-28 23:32:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:04,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 23:32:04,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:04,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582235064] [2021-10-28 23:32:04,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582235064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:04,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005170969] [2021-10-28 23:32:04,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:32:04,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:04,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:04,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:04,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:32:04,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:32:04,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:04,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:32:04,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 23:32:05,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005170969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:05,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:05,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-28 23:32:05,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494309984] [2021-10-28 23:32:05,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:32:05,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:32:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:32:05,155 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 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 23:32:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:05,196 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2021-10-28 23:32:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:32:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 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 30 [2021-10-28 23:32:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:05,200 INFO L225 Difference]: With dead ends: 54 [2021-10-28 23:32:05,200 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 23:32:05,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:32:05,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 23:32:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-10-28 23:32:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 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 23:32:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-28 23:32:05,223 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2021-10-28 23:32:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:05,224 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-28 23:32:05,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 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 23:32:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-28 23:32:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:32:05,227 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:05,228 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:05,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:05,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:05,444 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:05,444 INFO L85 PathProgramCache]: Analyzing trace with hash 158921246, now seen corresponding path program 5 times [2021-10-28 23:32:05,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:05,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090115449] [2021-10-28 23:32:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:05,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 23:32:05,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:05,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090115449] [2021-10-28 23:32:05,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090115449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:05,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688971508] [2021-10-28 23:32:05,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:32:05,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:05,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:05,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:05,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:32:05,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-28 23:32:05,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:05,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:32:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 23:32:05,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688971508] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:05,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:05,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-28 23:32:05,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034803809] [2021-10-28 23:32:05,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:32:05,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:32:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:32:05,881 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 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 23:32:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:05,925 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-10-28 23:32:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:32:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 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 34 [2021-10-28 23:32:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:05,930 INFO L225 Difference]: With dead ends: 60 [2021-10-28 23:32:05,930 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:32:05,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:32:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:32:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-28 23:32:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 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 23:32:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-28 23:32:05,946 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2021-10-28 23:32:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:05,947 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-28 23:32:05,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 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 23:32:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-28 23:32:05,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:32:05,951 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:05,952 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:05,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:06,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:06,180 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash -244827298, now seen corresponding path program 6 times [2021-10-28 23:32:06,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:06,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50869148] [2021-10-28 23:32:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:06,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 87 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-28 23:32:06,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:06,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50869148] [2021-10-28 23:32:06,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50869148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:06,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450395582] [2021-10-28 23:32:06,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:32:06,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:06,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:06,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:06,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:32:06,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-28 23:32:06,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:06,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:32:06,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-10-28 23:32:06,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450395582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:06,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:06,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2021-10-28 23:32:06,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590434022] [2021-10-28 23:32:06,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:32:06,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:06,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:32:06,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:32:06,652 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 23:32:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:07,253 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-10-28 23:32:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-28 23:32:07,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 23:32:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:07,254 INFO L225 Difference]: With dead ends: 101 [2021-10-28 23:32:07,254 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 23:32:07,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=669, Invalid=1401, Unknown=0, NotChecked=0, Total=2070 [2021-10-28 23:32:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 23:32:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-28 23:32:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 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 23:32:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-28 23:32:07,265 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 38 [2021-10-28 23:32:07,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:07,266 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-28 23:32:07,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 23:32:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-28 23:32:07,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 23:32:07,267 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:07,268 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:07,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:07,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:32:07,496 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2099079880, now seen corresponding path program 7 times [2021-10-28 23:32:07,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:07,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054690813] [2021-10-28 23:32:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:07,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-28 23:32:07,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:07,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054690813] [2021-10-28 23:32:07,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054690813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:07,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860854927] [2021-10-28 23:32:07,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:32:07,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:07,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:07,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:07,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:32:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:07,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:32:07,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-28 23:32:08,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860854927] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:08,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:08,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-28 23:32:08,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843377712] [2021-10-28 23:32:08,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:32:08,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:32:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:32:08,027 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 23:32:08,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:08,075 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-10-28 23:32:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:32:08,076 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 59 [2021-10-28 23:32:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:08,078 INFO L225 Difference]: With dead ends: 109 [2021-10-28 23:32:08,079 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 23:32:08,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:32:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 23:32:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-10-28 23:32:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 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 23:32:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-10-28 23:32:08,104 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 59 [2021-10-28 23:32:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:08,105 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-10-28 23:32:08,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 23:32:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-10-28 23:32:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 23:32:08,112 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:08,113 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:08,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:08,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:08,328 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1083775622, now seen corresponding path program 8 times [2021-10-28 23:32:08,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:08,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142722473] [2021-10-28 23:32:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:08,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-28 23:32:08,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:08,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142722473] [2021-10-28 23:32:08,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142722473] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:08,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633501433] [2021-10-28 23:32:08,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:32:08,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:08,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:08,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:32:08,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:32:08,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:08,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:32:08,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-28 23:32:09,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633501433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:09,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:09,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-28 23:32:09,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295155463] [2021-10-28 23:32:09,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 23:32:09,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:09,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 23:32:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:32:09,047 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 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 23:32:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:09,099 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-28 23:32:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:32:09,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 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 65 [2021-10-28 23:32:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:09,101 INFO L225 Difference]: With dead ends: 119 [2021-10-28 23:32:09,101 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 23:32:09,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:32:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 23:32:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-10-28 23:32:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 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 23:32:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-10-28 23:32:09,110 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 65 [2021-10-28 23:32:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:09,111 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-10-28 23:32:09,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 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 23:32:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-10-28 23:32:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-28 23:32:09,112 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:09,112 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:09,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:09,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:32:09,340 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 832519228, now seen corresponding path program 9 times [2021-10-28 23:32:09,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:09,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366464755] [2021-10-28 23:32:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:09,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 365 proven. 81 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-10-28 23:32:09,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:09,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366464755] [2021-10-28 23:32:09,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366464755] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:09,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350620969] [2021-10-28 23:32:09,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:32:09,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:09,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:09,474 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:09,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:32:09,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-28 23:32:09,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:09,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:32:09,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 367 proven. 81 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-10-28 23:32:10,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350620969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:10,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:10,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-28 23:32:10,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032350946] [2021-10-28 23:32:10,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 23:32:10,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 23:32:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:32:10,108 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 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 23:32:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:10,177 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-10-28 23:32:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:32:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 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 71 [2021-10-28 23:32:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:10,179 INFO L225 Difference]: With dead ends: 129 [2021-10-28 23:32:10,179 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 23:32:10,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=223, Invalid=329, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:32:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 23:32:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2021-10-28 23:32:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 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 23:32:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-10-28 23:32:10,198 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 71 [2021-10-28 23:32:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:10,200 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-10-28 23:32:10,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 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 23:32:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-10-28 23:32:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 23:32:10,202 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:10,202 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:10,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:10,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 23:32:10,428 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash -202032770, now seen corresponding path program 10 times [2021-10-28 23:32:10,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:10,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402754477] [2021-10-28 23:32:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:10,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-10-28 23:32:10,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:10,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402754477] [2021-10-28 23:32:10,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402754477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:10,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529386320] [2021-10-28 23:32:10,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:32:10,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:10,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:10,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:32:10,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:32:10,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:10,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:32:10,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-10-28 23:32:11,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529386320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:11,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:11,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-28 23:32:11,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594685699] [2021-10-28 23:32:11,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:32:11,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:32:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:32:11,270 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 23:32:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:11,302 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2021-10-28 23:32:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:32:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 77 [2021-10-28 23:32:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:11,304 INFO L225 Difference]: With dead ends: 127 [2021-10-28 23:32:11,304 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 23:32:11,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:32:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 23:32:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2021-10-28 23:32:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 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 23:32:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-28 23:32:11,314 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 77 [2021-10-28 23:32:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:11,314 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-28 23:32:11,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 23:32:11,315 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-28 23:32:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:32:11,315 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:11,316 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:11,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:11,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 23:32:11,532 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash -112220578, now seen corresponding path program 11 times [2021-10-28 23:32:11,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:11,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804792933] [2021-10-28 23:32:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:11,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 23:32:11,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:11,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804792933] [2021-10-28 23:32:11,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804792933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:11,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965918705] [2021-10-28 23:32:11,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:32:11,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:11,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:11,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:11,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:32:11,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2021-10-28 23:32:11,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:11,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:32:11,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 23:32:12,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965918705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:12,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:12,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-28 23:32:12,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289249512] [2021-10-28 23:32:12,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:32:12,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:32:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:32:12,701 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 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 23:32:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:12,745 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-10-28 23:32:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:32:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 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 100 [2021-10-28 23:32:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:12,747 INFO L225 Difference]: With dead ends: 150 [2021-10-28 23:32:12,747 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 23:32:12,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:32:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 23:32:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2021-10-28 23:32:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.048780487804878) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 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 23:32:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-10-28 23:32:12,759 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 100 [2021-10-28 23:32:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:12,760 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-10-28 23:32:12,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 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 23:32:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-10-28 23:32:12,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-28 23:32:12,762 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:12,762 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:12,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:12,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 23:32:12,976 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:12,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1202143874, now seen corresponding path program 12 times [2021-10-28 23:32:12,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:12,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565484001] [2021-10-28 23:32:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:12,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-10-28 23:32:13,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:13,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565484001] [2021-10-28 23:32:13,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565484001] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:13,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670452344] [2021-10-28 23:32:13,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:32:13,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:13,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:13,142 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:13,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 23:32:13,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-28 23:32:13,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:13,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:32:13,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-10-28 23:32:14,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670452344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:14,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:14,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-28 23:32:14,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514152461] [2021-10-28 23:32:14,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:32:14,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:32:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:32:14,235 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:32:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:14,276 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2021-10-28 23:32:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:32:14,276 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 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 123 [2021-10-28 23:32:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:14,278 INFO L225 Difference]: With dead ends: 173 [2021-10-28 23:32:14,279 INFO L226 Difference]: Without dead ends: 169 [2021-10-28 23:32:14,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:32:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-28 23:32:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2021-10-28 23:32:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.047945205479452) internal successors, (153), 146 states have internal predecessors, (153), 0 states have call successors, (0), 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 23:32:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2021-10-28 23:32:14,317 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 123 [2021-10-28 23:32:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:14,319 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2021-10-28 23:32:14,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 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 23:32:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2021-10-28 23:32:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-28 23:32:14,323 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:14,323 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:14,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:14,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:14,544 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:14,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1019764130, now seen corresponding path program 13 times [2021-10-28 23:32:14,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:14,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403842622] [2021-10-28 23:32:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:14,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-10-28 23:32:14,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:14,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403842622] [2021-10-28 23:32:14,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403842622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:14,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420394306] [2021-10-28 23:32:14,687 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:32:14,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:14,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:14,692 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:14,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 23:32:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:15,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:32:15,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-10-28 23:32:16,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420394306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:16,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:16,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-28 23:32:16,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517920522] [2021-10-28 23:32:16,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 23:32:16,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:16,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 23:32:16,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:32:16,047 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 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 23:32:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:16,105 INFO L93 Difference]: Finished difference Result 196 states and 204 transitions. [2021-10-28 23:32:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:32:16,105 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 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 146 [2021-10-28 23:32:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:16,107 INFO L225 Difference]: With dead ends: 196 [2021-10-28 23:32:16,107 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 23:32:16,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:32:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 23:32:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 170. [2021-10-28 23:32:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.047337278106509) internal successors, (177), 169 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 23:32:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 177 transitions. [2021-10-28 23:32:16,124 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 177 transitions. Word has length 146 [2021-10-28 23:32:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:16,124 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 177 transitions. [2021-10-28 23:32:16,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 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 23:32:16,125 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 177 transitions. [2021-10-28 23:32:16,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-28 23:32:16,127 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:16,127 INFO L513 BasicCegarLoop]: trace histogram [70, 70, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:16,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:16,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 23:32:16,340 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1127563646, now seen corresponding path program 14 times [2021-10-28 23:32:16,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:16,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112300427] [2021-10-28 23:32:16,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:16,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-10-28 23:32:16,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:16,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112300427] [2021-10-28 23:32:16,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112300427] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:16,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731727049] [2021-10-28 23:32:16,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:32:16,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:16,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:16,532 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:16,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 23:32:16,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:32:16,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:17,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:32:17,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-10-28 23:32:18,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731727049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:18,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:18,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-28 23:32:18,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307715477] [2021-10-28 23:32:18,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:32:18,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:32:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:32:18,005 INFO L87 Difference]: Start difference. First operand 170 states and 177 transitions. Second operand has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 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 23:32:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:18,064 INFO L93 Difference]: Finished difference Result 219 states and 228 transitions. [2021-10-28 23:32:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:32:18,065 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 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 169 [2021-10-28 23:32:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:18,067 INFO L225 Difference]: With dead ends: 219 [2021-10-28 23:32:18,067 INFO L226 Difference]: Without dead ends: 215 [2021-10-28 23:32:18,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:32:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-28 23:32:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 193. [2021-10-28 23:32:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.046875) internal successors, (201), 192 states have internal predecessors, (201), 0 states have call successors, (0), 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 23:32:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 201 transitions. [2021-10-28 23:32:18,107 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 201 transitions. Word has length 169 [2021-10-28 23:32:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:18,108 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 201 transitions. [2021-10-28 23:32:18,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 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 23:32:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 201 transitions. [2021-10-28 23:32:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-28 23:32:18,110 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:18,111 INFO L513 BasicCegarLoop]: trace histogram [80, 80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:18,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:18,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 23:32:18,336 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:18,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1903780258, now seen corresponding path program 15 times [2021-10-28 23:32:18,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:18,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100803193] [2021-10-28 23:32:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:18,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-10-28 23:32:18,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:18,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100803193] [2021-10-28 23:32:18,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100803193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:18,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273412792] [2021-10-28 23:32:18,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:32:18,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:18,524 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:18,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 23:32:19,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2021-10-28 23:32:19,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:19,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:32:19,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-10-28 23:32:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273412792] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:20,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:20,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-28 23:32:20,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417644636] [2021-10-28 23:32:20,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 23:32:20,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 23:32:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:32:20,490 INFO L87 Difference]: Start difference. First operand 193 states and 201 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 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 23:32:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:20,551 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2021-10-28 23:32:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:32:20,551 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 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 192 [2021-10-28 23:32:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:20,553 INFO L225 Difference]: With dead ends: 242 [2021-10-28 23:32:20,554 INFO L226 Difference]: Without dead ends: 238 [2021-10-28 23:32:20,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:32:20,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-28 23:32:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 216. [2021-10-28 23:32:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0465116279069768) internal successors, (225), 215 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 23:32:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2021-10-28 23:32:20,571 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 192 [2021-10-28 23:32:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:20,572 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2021-10-28 23:32:20,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 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 23:32:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2021-10-28 23:32:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-10-28 23:32:20,575 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:20,576 INFO L513 BasicCegarLoop]: trace histogram [90, 90, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:20,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:20,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 23:32:20,793 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 684377470, now seen corresponding path program 16 times [2021-10-28 23:32:20,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:20,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260438643] [2021-10-28 23:32:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:20,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-10-28 23:32:21,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:21,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260438643] [2021-10-28 23:32:21,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260438643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:21,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709540911] [2021-10-28 23:32:21,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:32:21,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:21,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:21,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:21,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 23:32:21,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:32:21,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:21,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:32:21,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-10-28 23:32:23,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709540911] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:23,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:23,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-28 23:32:23,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630637830] [2021-10-28 23:32:23,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 23:32:23,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:23,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 23:32:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:32:23,261 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 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 23:32:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:23,344 INFO L93 Difference]: Finished difference Result 265 states and 276 transitions. [2021-10-28 23:32:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:32:23,344 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 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 215 [2021-10-28 23:32:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:23,346 INFO L225 Difference]: With dead ends: 265 [2021-10-28 23:32:23,346 INFO L226 Difference]: Without dead ends: 261 [2021-10-28 23:32:23,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=223, Invalid=329, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:32:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-28 23:32:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 239. [2021-10-28 23:32:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.046218487394958) internal successors, (249), 238 states have internal predecessors, (249), 0 states have call successors, (0), 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 23:32:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 249 transitions. [2021-10-28 23:32:23,366 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 249 transitions. Word has length 215 [2021-10-28 23:32:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:23,367 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 249 transitions. [2021-10-28 23:32:23,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 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 23:32:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 249 transitions. [2021-10-28 23:32:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-28 23:32:23,371 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:23,371 INFO L513 BasicCegarLoop]: trace histogram [100, 100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:23,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:23,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 23:32:23,596 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:23,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash -16999842, now seen corresponding path program 17 times [2021-10-28 23:32:23,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:23,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363386592] [2021-10-28 23:32:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:23,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 10917 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 23:32:27,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:27,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363386592] [2021-10-28 23:32:27,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363386592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:27,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828257797] [2021-10-28 23:32:27,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:32:27,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:27,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:27,965 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:27,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 23:32:28,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2021-10-28 23:32:28,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:32:28,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-28 23:32:28,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 11036 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 23:32:29,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828257797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:29,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:32:29,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [104] total 106 [2021-10-28 23:32:29,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750801401] [2021-10-28 23:32:29,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-28 23:32:29,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:29,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-28 23:32:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2021-10-28 23:32:29,649 INFO L87 Difference]: Start difference. First operand 239 states and 249 transitions. Second operand has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 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 23:32:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:31,126 INFO L93 Difference]: Finished difference Result 9779 states and 10239 transitions. [2021-10-28 23:32:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-28 23:32:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2021-10-28 23:32:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:31,127 INFO L225 Difference]: With dead ends: 9779 [2021-10-28 23:32:31,128 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:32:31,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5366, Invalid=5976, Unknown=0, NotChecked=0, Total=11342 [2021-10-28 23:32:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:32:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:32:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 23:32:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:32:31,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2021-10-28 23:32:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:31,142 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:32:31,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 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 23:32:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:32:31,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:32:31,146 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:32:31,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:31,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:31,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:32:31,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:32:31,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:34:24,687 WARN L207 SmtUtils]: Spent 1.89 m on a formula simplification. DAG size of input: 5172 DAG size of output: 2205 [2021-10-28 23:34:24,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:34:26,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:36:01,063 WARN L207 SmtUtils]: Spent 1.58 m on a formula simplification. DAG size of input: 2186 DAG size of output: 363 [2021-10-28 23:36:07,258 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 663 DAG size of output: 59 [2021-10-28 23:36:07,261 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:36:07,261 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-28 23:36:07,262 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 31 35) no Hoare annotation was computed. [2021-10-28 23:36:07,262 INFO L853 garLoopResultBuilder]: At program point L31-3(lines 31 35) the Hoare annotation is: (let ((.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 60 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 6)) (and .cse0 .cse1 (<= 20 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 2)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 4) (<= 40 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~i~0 0)) (and .cse0 .cse1 (<= 70 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 7)) (and .cse0 (<= ULTIMATE.start_main_~i~0 1) .cse1 (<= 10 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 5) (<= 50 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 8) (<= 80 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 30 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 3)) (and .cse0 .cse1 (<= 90 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 9)))) [2021-10-28 23:36:07,262 INFO L857 garLoopResultBuilder]: For program point L31-4(lines 31 35) no Hoare annotation was computed. [2021-10-28 23:36:07,263 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-28 23:36:07,263 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:36:07,263 INFO L857 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-10-28 23:36:07,263 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2021-10-28 23:36:07,263 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:36:07,265 INFO L853 garLoopResultBuilder]: At program point L32-3(lines 32 34) the Hoare annotation is: (let ((.cse16 (<= 60 ULTIMATE.start_main_~k~0)) (.cse2 (<= 20 ULTIMATE.start_main_~k~0)) (.cse12 (<= 70 ULTIMATE.start_main_~k~0)) (.cse23 (<= 30 ULTIMATE.start_main_~k~0)) (.cse29 (<= 80 ULTIMATE.start_main_~k~0)) (.cse10 (<= ULTIMATE.start_main_~j~0 3)) (.cse7 (<= ULTIMATE.start_main_~j~0 7)) (.cse28 (<= 10 ULTIMATE.start_main_~k~0)) (.cse30 (<= 90 ULTIMATE.start_main_~k~0)) (.cse11 (<= ULTIMATE.start_main_~j~0 8)) (.cse21 (<= 40 ULTIMATE.start_main_~k~0)) (.cse25 (<= 50 ULTIMATE.start_main_~k~0)) (.cse4 (= ULTIMATE.start_main_~j~0 0)) (.cse17 (<= ULTIMATE.start_main_~i~0 5)) (.cse13 (<= ULTIMATE.start_main_~i~0 7)) (.cse6 (<= ULTIMATE.start_main_~j~0 5)) (.cse27 (<= ULTIMATE.start_main_~j~0 1)) (.cse18 (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0)) (.cse24 (<= ULTIMATE.start_main_~i~0 4)) (.cse26 (<= ULTIMATE.start_main_~j~0 6)) (.cse19 (<= ULTIMATE.start_main_~i~0 8)) (.cse3 (<= ULTIMATE.start_main_~i~0 2)) (.cse22 (= ULTIMATE.start_main_~i~0 0)) (.cse5 (<= ULTIMATE.start_main_~i~0 6)) (.cse14 (<= ULTIMATE.start_main_~j~0 9)) (.cse9 (<= ULTIMATE.start_main_~i~0 1)) (.cse20 (<= ULTIMATE.start_main_~j~0 2)) (.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0)) (.cse8 (<= ULTIMATE.start_main_~i~0 3)) (.cse15 (<= ULTIMATE.start_main_~j~0 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (<= 65 ULTIMATE.start_main_~k~0) .cse5 .cse6) (and .cse0 .cse1 .cse7 (<= 37 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse9 .cse1 .cse10 (<= 13 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 68 ULTIMATE.start_main_~k~0) .cse11 .cse5) (and .cse0 .cse1 .cse12 .cse5) (and .cse0 (<= 79 ULTIMATE.start_main_~k~0) .cse1 .cse13 .cse14) (and .cse0 .cse9 .cse1 (<= 14 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse16 .cse17) (and .cse0 .cse1 .cse18 (<= 94 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 (<= 54 ULTIMATE.start_main_~k~0) .cse17 .cse15) (and .cse0 .cse1 .cse18 (<= 97 ULTIMATE.start_main_~k~0) .cse7) (and .cse0 .cse1 .cse16 .cse5 .cse4) (and .cse0 .cse1 .cse18 .cse6 (<= 95 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 83 ULTIMATE.start_main_~k~0) .cse10 .cse19) (and .cse0 .cse1 .cse17 .cse20 (<= 52 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 53 ULTIMATE.start_main_~k~0) .cse1 .cse17 .cse10) (and .cse0 .cse1 .cse21 .cse8) (and .cse0 .cse1 (<= 3 ULTIMATE.start_main_~k~0) .cse10 .cse22) (and .cse0 .cse1 (<= 39 ULTIMATE.start_main_~k~0) .cse8 .cse14) (and .cse0 .cse1 .cse23 .cse8 .cse4) (and .cse0 .cse1 .cse6 (<= 85 ULTIMATE.start_main_~k~0) .cse19) (and .cse0 .cse1 .cse24 .cse25) (and .cse0 .cse1 .cse26 .cse19 (<= 86 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse6 (<= 15 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse24 (<= 41 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 (<= 21 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 25 ULTIMATE.start_main_~k~0) .cse6 .cse3) (and .cse0 .cse1 (<= 82 ULTIMATE.start_main_~k~0) .cse19 .cse20) (and .cse0 .cse9 .cse1 .cse28 .cse4) (and .cse0 .cse1 .cse24 .cse7 (<= 47 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse20 (<= 42 ULTIMATE.start_main_~k~0)) (and (<= 29 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse3 .cse14) (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~k~0) .cse22 .cse14) (and .cse0 .cse1 .cse5 (<= 66 ULTIMATE.start_main_~k~0) .cse26) (and .cse0 .cse1 (<= 48 ULTIMATE.start_main_~k~0) .cse11 .cse24) (and .cse0 .cse9 .cse1 (<= 19 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse11 (<= 28 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 7 ULTIMATE.start_main_~k~0) .cse7 .cse22) (and .cse0 .cse1 (<= 88 ULTIMATE.start_main_~k~0) .cse11 .cse19) (and .cse0 .cse1 .cse10 (<= 33 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse27 .cse1 .cse19 (<= 81 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse5 (<= 64 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse19 .cse4 .cse29) (and .cse0 .cse9 .cse1 .cse2) (and .cse0 .cse1 .cse13 .cse10 (<= 73 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse4) (and .cse0 .cse1 (<= 55 ULTIMATE.start_main_~k~0) .cse17 .cse6) (and .cse0 .cse1 (<= 5 ULTIMATE.start_main_~k~0) .cse6 .cse22) (and .cse0 .cse1 .cse24 (<= 44 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse9 .cse1 .cse11 (<= 18 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 23 ULTIMATE.start_main_~k~0) .cse10 .cse3) (and .cse0 .cse1 .cse12 .cse13 .cse4) (and .cse0 .cse27 .cse1 (<= 1 ULTIMATE.start_main_~k~0) .cse22) (and .cse0 .cse1 .cse11 (<= 38 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse1 (<= 59 ULTIMATE.start_main_~k~0) .cse17 .cse14) (and .cse0 .cse1 .cse26 .cse3 (<= 26 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 92 ULTIMATE.start_main_~k~0) .cse1 .cse18 .cse20) (and .cse0 .cse1 .cse6 .cse8 (<= 35 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse23 .cse3) (and .cse0 .cse1 .cse18 (<= 96 ULTIMATE.start_main_~k~0) .cse26) (and (<= 87 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse7 .cse19) (and .cse0 .cse1 (<= 77 ULTIMATE.start_main_~k~0) .cse13 .cse7) (and .cse0 .cse27 .cse1 .cse8 (<= 31 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 89 ULTIMATE.start_main_~k~0) .cse19 .cse14) (and .cse0 .cse1 .cse13 (<= 72 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 (<= 57 ULTIMATE.start_main_~k~0) .cse17 .cse7) (and .cse0 .cse1 .cse18 (<= 93 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 .cse24 (<= 49 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse11 .cse13 (<= 78 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse17 (<= 56 ULTIMATE.start_main_~k~0) .cse26) (and .cse0 .cse1 .cse18 .cse11 (<= 98 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse10 (<= 43 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse11 .cse17 (<= 58 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse5 .cse7 (<= 67 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse30 .cse19) (and .cse0 .cse1 .cse13 .cse29) (and .cse0 (<= 63 ULTIMATE.start_main_~k~0) .cse1 .cse5 .cse10) (and .cse0 .cse1 .cse7 .cse3 (<= 27 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse18 (<= 91 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse18 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 32 ULTIMATE.start_main_~k~0) .cse8 .cse20) (and .cse0 .cse1 (<= 74 ULTIMATE.start_main_~k~0) .cse13 .cse15) (and .cse0 .cse1 (<= 2 ULTIMATE.start_main_~k~0) .cse22 .cse20) (and .cse0 .cse27 .cse1 (<= 61 ULTIMATE.start_main_~k~0) .cse5) (and (<= 36 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse26 .cse8) (and .cse0 .cse1 .cse13 .cse26 (<= 76 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse13 (<= 71 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse7 (<= 17 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse6 (<= 45 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse26 (<= 16 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 22 ULTIMATE.start_main_~k~0) .cse3 .cse20) (and .cse0 .cse1 .cse22 .cse28) (and .cse0 .cse1 .cse30 .cse18 .cse4) (and .cse0 .cse1 (<= 6 ULTIMATE.start_main_~k~0) .cse22 .cse26) (and (<= 8 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse11 .cse22) (and .cse0 .cse1 .cse24 .cse21 .cse4) (and .cse0 .cse1 .cse17 .cse25 .cse4) (and .cse0 .cse27 .cse1 .cse17 (<= 51 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse13 (<= 75 ULTIMATE.start_main_~k~0) .cse6) (and .cse0 .cse1 .cse5 .cse20 (<= 62 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse27 .cse1 (<= 11 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse18 (<= 99 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse24 .cse26 (<= 46 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 84 ULTIMATE.start_main_~k~0) .cse19 .cse15) (and .cse0 .cse1 (<= 24 ULTIMATE.start_main_~k~0) .cse3 .cse15) (and .cse0 (<= 4 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse15) (and .cse0 .cse1 (<= 69 ULTIMATE.start_main_~k~0) .cse5 .cse14) (and .cse0 .cse9 .cse1 (<= 12 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 .cse8 .cse15 (<= 34 ULTIMATE.start_main_~k~0)))) [2021-10-28 23:36:07,265 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:36:07,265 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 23:36:07,265 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-28 23:36:07,266 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (<= 10 ULTIMATE.start_main_~n~0) [2021-10-28 23:36:07,266 INFO L860 garLoopResultBuilder]: At program point L37(lines 24 38) the Hoare annotation is: true [2021-10-28 23:36:07,270 INFO L731 BasicCegarLoop]: Path program histogram: [17, 1, 1] [2021-10-28 23:36:07,271 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:36:07,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:36:07 BoogieIcfgContainer [2021-10-28 23:36:07,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:36:07,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:36:07,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:36:07,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:36:07,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:02" (3/4) ... [2021-10-28 23:36:07,338 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:36:07,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:36:07,364 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:36:07,364 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:36:07,364 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:36:07,411 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:36:07,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:36:07,412 INFO L168 Benchmark]: Toolchain (without parser) took 245938.14 ms. Allocated memory was 130.0 MB in the beginning and 6.4 GB in the end (delta: 6.3 GB). Free memory was 93.5 MB in the beginning and 6.0 GB in the end (delta: -5.9 GB). Peak memory consumption was 378.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:07,413 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 101.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:07,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.07 ms. Allocated memory is still 130.0 MB. Free memory was 93.5 MB in the beginning and 103.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:07,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.24 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:07,414 INFO L168 Benchmark]: Boogie Preprocessor took 20.43 ms. Allocated memory is still 130.0 MB. Free memory was 102.4 MB in the beginning and 101.8 MB in the end (delta: 582.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:07,414 INFO L168 Benchmark]: RCFGBuilder took 273.20 ms. Allocated memory is still 130.0 MB. Free memory was 101.1 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:07,415 INFO L168 Benchmark]: TraceAbstraction took 245278.25 ms. Allocated memory was 130.0 MB in the beginning and 6.4 GB in the end (delta: 6.3 GB). Free memory was 91.4 MB in the beginning and 6.0 GB in the end (delta: -5.9 GB). Peak memory consumption was 2.8 GB. Max. memory is 16.1 GB. [2021-10-28 23:36:07,416 INFO L168 Benchmark]: Witness Printer took 77.19 ms. Allocated memory is still 6.4 GB. Free memory was 6.0 GB in the beginning and 6.0 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:07,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 101.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.07 ms. Allocated memory is still 130.0 MB. Free memory was 93.5 MB in the beginning and 103.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.24 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.43 ms. Allocated memory is still 130.0 MB. Free memory was 102.4 MB in the beginning and 101.8 MB in the end (delta: 582.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 273.20 ms. Allocated memory is still 130.0 MB. Free memory was 101.1 MB in the beginning and 91.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 245278.25 ms. Allocated memory was 130.0 MB in the beginning and 6.4 GB in the end (delta: 6.3 GB). Free memory was 91.4 MB in the beginning and 6.0 GB in the end (delta: -5.9 GB). Peak memory consumption was 2.8 GB. Max. memory is 16.1 GB. * Witness Printer took 77.19 ms. Allocated memory is still 6.4 GB. Free memory was 6.0 GB in the beginning and 6.0 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 245.1s, OverallIterations: 19, TraceHistogramMax: 100, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 215.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 561 SDtfs, 1217 SDslu, 2554 SDs, 0 SdLazy, 1243 SolverSat, 276 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1898 GetRequests, 1522 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=18, InterpolantAutomatonStates: 301, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 206 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5123 NumberOfFragments, 1898 HoareAnnotationTreeSize, 4 FomulaSimplifications, 5909860 FormulaSimplificationTreeSizeReduction, 114.7s HoareSimplificationTime, 4 FomulaSimplificationsInter, 141739 FormulaSimplificationTreeSizeReductionInter, 101.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 3223 NumberOfCodeBlocks, 3172 NumberOfCodeBlocksAsserted, 304 NumberOfCheckSat, 3187 ConstructedInterpolants, 0 QuantifiedInterpolants, 15496 SizeOfPredicates, 34 NumberOfNonLiveVariables, 4267 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 34349/88241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 10 <= n - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 10 <= n) && 20 <= k) && i <= 2) && j == 0) || ((((10 <= m && 10 <= n) && 65 <= k) && i <= 6) && j <= 5)) || ((((10 <= m && 10 <= n) && j <= 7) && 37 <= k) && i <= 3)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 3) && 13 <= k)) || ((((10 <= m && 10 <= n) && 68 <= k) && j <= 8) && i <= 6)) || (((10 <= m && 10 <= n) && 70 <= k) && i <= 6)) || ((((10 <= m && 79 <= k) && 10 <= n) && i <= 7) && j <= 9)) || ((((10 <= m && i <= 1) && 10 <= n) && 14 <= k) && j <= 4)) || (((10 <= m && 10 <= n) && 60 <= k) && i <= 5)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 94 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && 54 <= k) && i <= 5) && j <= 4)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 97 <= k) && j <= 7)) || ((((10 <= m && 10 <= n) && 60 <= k) && i <= 6) && j == 0)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && j <= 5) && 95 <= k)) || ((((10 <= m && 10 <= n) && 83 <= k) && j <= 3) && i <= 8)) || ((((10 <= m && 10 <= n) && i <= 5) && j <= 2) && 52 <= k)) || ((((10 <= m && 53 <= k) && 10 <= n) && i <= 5) && j <= 3)) || (((10 <= m && 10 <= n) && 40 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 3 <= k) && j <= 3) && i == 0)) || ((((10 <= m && 10 <= n) && 39 <= k) && i <= 3) && j <= 9)) || ((((10 <= m && 10 <= n) && 30 <= k) && i <= 3) && j == 0)) || ((((10 <= m && 10 <= n) && j <= 5) && 85 <= k) && i <= 8)) || (((10 <= m && 10 <= n) && i <= 4) && 50 <= k)) || ((((10 <= m && 10 <= n) && j <= 6) && i <= 8) && 86 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 5) && 15 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && 21 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 25 <= k) && j <= 5) && i <= 2)) || ((((10 <= m && 10 <= n) && 82 <= k) && i <= 8) && j <= 2)) || ((((10 <= m && i <= 1) && 10 <= n) && 10 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 7) && 47 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 2) && 42 <= k)) || ((((29 <= k && 10 <= m) && 10 <= n) && i <= 2) && j <= 9)) || ((((10 <= m && 10 <= n) && 9 <= k) && i == 0) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 6) && 66 <= k) && j <= 6)) || ((((10 <= m && 10 <= n) && 48 <= k) && j <= 8) && i <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && 19 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 8) && 28 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 7 <= k) && j <= 7) && i == 0)) || ((((10 <= m && 10 <= n) && 88 <= k) && j <= 8) && i <= 8)) || ((((10 <= m && 10 <= n) && j <= 3) && 33 <= k) && i <= 3)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 8) && 81 <= k)) || ((((10 <= m && 10 <= n) && i <= 6) && 64 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && i <= 8) && j == 0) && 80 <= k)) || (((10 <= m && i <= 1) && 10 <= n) && 20 <= k)) || ((((10 <= m && 10 <= n) && i <= 7) && j <= 3) && 73 <= k)) || ((((10 <= m && 0 <= k) && 10 <= n) && i == 0) && j == 0)) || ((((10 <= m && 10 <= n) && 55 <= k) && i <= 5) && j <= 5)) || ((((10 <= m && 10 <= n) && 5 <= k) && j <= 5) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 44 <= k) && j <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 8) && 18 <= k)) || ((((10 <= m && 10 <= n) && 23 <= k) && j <= 3) && i <= 2)) || ((((10 <= m && 10 <= n) && 70 <= k) && i <= 7) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && 1 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && j <= 8) && 38 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 59 <= k) && i <= 5) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 6) && i <= 2) && 26 <= k)) || ((((10 <= m && 92 <= k) && 10 <= n) && i + 1 <= n) && j <= 2)) || ((((10 <= m && 10 <= n) && j <= 5) && i <= 3) && 35 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 96 <= k) && j <= 6)) || ((((87 <= k && 10 <= m) && 10 <= n) && j <= 7) && i <= 8)) || ((((10 <= m && 10 <= n) && 77 <= k) && i <= 7) && j <= 7)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 3) && 31 <= k)) || ((((10 <= m && 10 <= n) && 89 <= k) && i <= 8) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 7) && 72 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && 57 <= k) && i <= 5) && j <= 7)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 93 <= k) && j <= 3)) || ((((10 <= m && 10 <= n) && i <= 4) && 49 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 8) && i <= 7) && 78 <= k)) || ((((10 <= m && 10 <= n) && i <= 5) && 56 <= k) && j <= 6)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && j <= 8) && 98 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 3) && 43 <= k)) || ((((10 <= m && 10 <= n) && j <= 8) && i <= 5) && 58 <= k)) || ((((10 <= m && 10 <= n) && i <= 6) && j <= 7) && 67 <= k)) || (((10 <= m && 10 <= n) && 90 <= k) && i <= 8)) || (((10 <= m && 10 <= n) && i <= 7) && 80 <= k)) || ((((10 <= m && 63 <= k) && 10 <= n) && i <= 6) && j <= 3)) || ((((10 <= m && 10 <= n) && j <= 7) && i <= 2) && 27 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i + 1 <= n) && 91 <= k)) || (((10 <= m && 10 <= n) && i + 1 <= n) && 100 <= k)) || ((((10 <= m && 10 <= n) && 32 <= k) && i <= 3) && j <= 2)) || ((((10 <= m && 10 <= n) && 74 <= k) && i <= 7) && j <= 4)) || ((((10 <= m && 10 <= n) && 2 <= k) && i == 0) && j <= 2)) || ((((10 <= m && j <= 1) && 10 <= n) && 61 <= k) && i <= 6)) || ((((36 <= k && 10 <= m) && 10 <= n) && j <= 6) && i <= 3)) || ((((10 <= m && 10 <= n) && i <= 7) && j <= 6) && 76 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 7) && 71 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 7) && 17 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 5) && 45 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 6) && 16 <= k)) || ((((10 <= m && 10 <= n) && 22 <= k) && i <= 2) && j <= 2)) || (((10 <= m && 10 <= n) && i == 0) && 10 <= k)) || ((((10 <= m && 10 <= n) && 90 <= k) && i + 1 <= n) && j == 0)) || ((((10 <= m && 10 <= n) && 6 <= k) && i == 0) && j <= 6)) || ((((8 <= k && 10 <= m) && 10 <= n) && j <= 8) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 40 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 5) && 50 <= k) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 5) && 51 <= k)) || ((((10 <= m && 10 <= n) && i <= 7) && 75 <= k) && j <= 5)) || ((((10 <= m && 10 <= n) && i <= 6) && j <= 2) && 62 <= k)) || ((((10 <= m && i <= 1) && j <= 1) && 10 <= n) && 11 <= k)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 99 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 6) && 46 <= k)) || ((((10 <= m && 10 <= n) && 84 <= k) && i <= 8) && j <= 4)) || ((((10 <= m && 10 <= n) && 24 <= k) && i <= 2) && j <= 4)) || ((((10 <= m && 4 <= k) && 10 <= n) && i == 0) && j <= 4)) || ((((10 <= m && 10 <= n) && 69 <= k) && i <= 6) && j <= 9)) || ((((10 <= m && i <= 1) && 10 <= n) && 12 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && i <= 3) && j <= 4) && 34 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((((((((10 <= m && 10 <= n) && 100 <= k) || (((10 <= m && 10 <= n) && 60 <= k) && i <= 6)) || (((10 <= m && 10 <= n) && 20 <= k) && i <= 2)) || (((10 <= m && 10 <= n) && i <= 4) && 40 <= k)) || (((10 <= m && 0 <= k) && 10 <= n) && i == 0)) || (((10 <= m && 10 <= n) && 70 <= k) && i <= 7)) || (((10 <= m && i <= 1) && 10 <= n) && 10 <= k)) || (((10 <= m && 10 <= n) && i <= 5) && 50 <= k)) || (((10 <= m && 10 <= n) && i <= 8) && 80 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 3)) || (((10 <= m && 10 <= n) && 90 <= k) && i <= 9) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:36:07,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb7a6cd-5e43-40a1-bfe4-c5a585e70fb1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...