./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:08:24,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:08:24,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:08:24,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:08:24,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:08:24,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:08:24,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:08:24,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:08:24,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:08:24,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:08:24,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:08:24,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:08:24,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:08:24,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:08:24,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:08:24,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:08:24,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:08:24,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:08:24,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:08:24,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:08:24,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:08:24,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:08:24,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:08:24,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:08:24,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:08:24,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:08:24,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:08:24,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:08:24,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:08:24,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:08:24,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:08:24,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:08:24,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:08:24,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:08:24,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:08:24,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:08:24,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:08:24,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:08:24,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:08:24,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:08:24,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:08:24,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:08:24,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:08:24,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:08:24,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:08:24,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:08:24,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:08:24,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:08:24,216 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:08:24,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:08:24,217 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:08:24,217 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:08:24,218 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:08:24,218 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:08:24,218 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:08:24,219 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:08:24,219 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:08:24,219 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:08:24,219 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:08:24,220 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:08:24,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:08:24,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:08:24,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:08:24,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:08:24,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:08:24,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:08:24,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:08:24,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:08:24,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:08:24,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:08:24,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:08:24,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:08:24,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:08:24,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:08:24,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:08:24,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:08:24,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:08:24,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:08:24,227 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:08:24,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:08:24,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:08:24,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:08:24,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:08:24,228 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece [2021-11-23 03:08:24,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:08:24,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:08:24,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:08:24,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:08:24,601 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:08:24,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2021-11-23 03:08:24,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/data/8b12e8e5b/f329f0de9ce342ddb060e427b3c9daec/FLAG0bc1ed7f8 [2021-11-23 03:08:25,423 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:08:25,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2021-11-23 03:08:25,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/data/8b12e8e5b/f329f0de9ce342ddb060e427b3c9daec/FLAG0bc1ed7f8 [2021-11-23 03:08:25,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/data/8b12e8e5b/f329f0de9ce342ddb060e427b3c9daec [2021-11-23 03:08:25,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:08:25,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:08:25,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:08:25,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:08:25,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:08:25,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:25" (1/1) ... [2021-11-23 03:08:25,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9e9752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:25, skipping insertion in model container [2021-11-23 03:08:25,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:25" (1/1) ... [2021-11-23 03:08:25,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:08:25,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:08:25,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2021-11-23 03:08:26,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:08:26,296 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:08:26,310 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2021-11-23 03:08:26,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:08:26,471 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:08:26,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26 WrapperNode [2021-11-23 03:08:26,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:08:26,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:08:26,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:08:26,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:08:26,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,595 INFO L137 Inliner]: procedures = 88, calls = 329, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 743 [2021-11-23 03:08:26,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:08:26,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:08:26,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:08:26,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:08:26,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:08:26,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:08:26,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:08:26,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:08:26,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (1/1) ... [2021-11-23 03:08:26,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:08:26,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:08:26,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:08:26,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:08:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-11-23 03:08:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-11-23 03:08:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:08:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-23 03:08:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-23 03:08:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-23 03:08:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-23 03:08:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-23 03:08:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-23 03:08:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-23 03:08:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-23 03:08:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:08:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:08:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:08:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:08:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-23 03:08:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-23 03:08:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-23 03:08:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-23 03:08:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-23 03:08:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-23 03:08:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-23 03:08:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-23 03:08:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-23 03:08:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-23 03:08:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-23 03:08:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-23 03:08:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-23 03:08:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-23 03:08:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-23 03:08:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-23 03:08:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-23 03:08:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-23 03:08:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-23 03:08:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-23 03:08:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:08:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-23 03:08:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-23 03:08:26,844 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-23 03:08:26,844 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-23 03:08:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-23 03:08:26,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-23 03:08:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:08:26,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:08:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-23 03:08:26,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-23 03:08:27,039 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:08:27,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:08:28,254 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:08:28,901 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:08:28,901 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:08:28,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:28 BoogieIcfgContainer [2021-11-23 03:08:28,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:08:28,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:08:28,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:08:28,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:08:28,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:08:25" (1/3) ... [2021-11-23 03:08:28,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13415844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:28, skipping insertion in model container [2021-11-23 03:08:28,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:26" (2/3) ... [2021-11-23 03:08:28,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13415844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:28, skipping insertion in model container [2021-11-23 03:08:28,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:28" (3/3) ... [2021-11-23 03:08:28,916 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2021-11-23 03:08:28,922 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:08:28,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:08:28,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:08:28,995 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:08:28,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:08:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-23 03:08:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:08:29,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:29,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:29,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash -895696957, now seen corresponding path program 1 times [2021-11-23 03:08:29,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:29,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100085838] [2021-11-23 03:08:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:29,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:08:29,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:29,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100085838] [2021-11-23 03:08:29,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100085838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:29,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:29,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:08:29,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186325995] [2021-11-23 03:08:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:29,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:08:29,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:29,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:08:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:08:29,787 INFO L87 Difference]: Start difference. First operand has 348 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-23 03:08:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:32,445 INFO L93 Difference]: Finished difference Result 1159 states and 1908 transitions. [2021-11-23 03:08:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:08:32,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 62 [2021-11-23 03:08:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:32,481 INFO L225 Difference]: With dead ends: 1159 [2021-11-23 03:08:32,481 INFO L226 Difference]: Without dead ends: 828 [2021-11-23 03:08:32,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:08:32,497 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 1623 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:32,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 2122 Invalid, 2544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [506 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 03:08:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-23 03:08:32,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 779. [2021-11-23 03:08:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 552 states have (on average 1.6431159420289856) internal successors, (907), 587 states have internal predecessors, (907), 184 states have call successors, (184), 40 states have call predecessors, (184), 42 states have return successors, (185), 176 states have call predecessors, (185), 179 states have call successors, (185) [2021-11-23 03:08:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1276 transitions. [2021-11-23 03:08:32,674 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1276 transitions. Word has length 62 [2021-11-23 03:08:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:32,675 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 1276 transitions. [2021-11-23 03:08:32,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-23 03:08:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1276 transitions. [2021-11-23 03:08:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:08:32,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:32,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:32,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:08:32,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash -832320358, now seen corresponding path program 1 times [2021-11-23 03:08:32,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:32,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016364408] [2021-11-23 03:08:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:32,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:08:32,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016364408] [2021-11-23 03:08:32,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016364408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:32,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:32,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:08:32,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842270921] [2021-11-23 03:08:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:32,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:08:32,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:08:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:08:32,843 INFO L87 Difference]: Start difference. First operand 779 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:08:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:33,046 INFO L93 Difference]: Finished difference Result 1309 states and 2151 transitions. [2021-11-23 03:08:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:08:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2021-11-23 03:08:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:33,055 INFO L225 Difference]: With dead ends: 1309 [2021-11-23 03:08:33,055 INFO L226 Difference]: Without dead ends: 849 [2021-11-23 03:08:33,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:08:33,062 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 41 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:33,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 2179 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:08:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-23 03:08:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 791. [2021-11-23 03:08:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 561 states have (on average 1.6327985739750446) internal successors, (916), 596 states have internal predecessors, (916), 184 states have call successors, (184), 40 states have call predecessors, (184), 45 states have return successors, (191), 179 states have call predecessors, (191), 179 states have call successors, (191) [2021-11-23 03:08:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1291 transitions. [2021-11-23 03:08:33,130 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1291 transitions. Word has length 67 [2021-11-23 03:08:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:33,131 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1291 transitions. [2021-11-23 03:08:33,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:08:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1291 transitions. [2021-11-23 03:08:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 03:08:33,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:33,135 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:33,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:08:33,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:33,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2143206914, now seen corresponding path program 1 times [2021-11-23 03:08:33,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:33,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912336992] [2021-11-23 03:08:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:33,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:08:33,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:33,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912336992] [2021-11-23 03:08:33,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912336992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:33,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:33,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:08:33,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227987584] [2021-11-23 03:08:33,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:33,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:08:33,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:33,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:08:33,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:08:33,361 INFO L87 Difference]: Start difference. First operand 791 states and 1291 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-23 03:08:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:35,456 INFO L93 Difference]: Finished difference Result 1798 states and 2930 transitions. [2021-11-23 03:08:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:08:35,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 71 [2021-11-23 03:08:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:35,483 INFO L225 Difference]: With dead ends: 1798 [2021-11-23 03:08:35,483 INFO L226 Difference]: Without dead ends: 1230 [2021-11-23 03:08:35,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:08:35,489 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 2176 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:35,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 1653 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:08:35,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-23 03:08:35,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1136. [2021-11-23 03:08:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 794 states have (on average 1.5881612090680102) internal successors, (1261), 846 states have internal predecessors, (1261), 270 states have call successors, (270), 63 states have call predecessors, (270), 71 states have return successors, (286), 263 states have call predecessors, (286), 265 states have call successors, (286) [2021-11-23 03:08:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1817 transitions. [2021-11-23 03:08:35,588 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1817 transitions. Word has length 71 [2021-11-23 03:08:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:35,589 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1817 transitions. [2021-11-23 03:08:35,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-23 03:08:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1817 transitions. [2021-11-23 03:08:35,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 03:08:35,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:35,601 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:35,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:08:35,602 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:35,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 351547510, now seen corresponding path program 1 times [2021-11-23 03:08:35,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:35,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743295948] [2021-11-23 03:08:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:35,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:08:35,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:35,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743295948] [2021-11-23 03:08:35,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743295948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:35,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:35,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:08:35,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118497904] [2021-11-23 03:08:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:35,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:08:35,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:08:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:08:35,813 INFO L87 Difference]: Start difference. First operand 1136 states and 1817 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 03:08:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:36,119 INFO L93 Difference]: Finished difference Result 2193 states and 3564 transitions. [2021-11-23 03:08:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:08:36,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2021-11-23 03:08:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:36,132 INFO L225 Difference]: With dead ends: 2193 [2021-11-23 03:08:36,132 INFO L226 Difference]: Without dead ends: 1136 [2021-11-23 03:08:36,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:08:36,150 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 221 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:36,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 1939 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:08:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-23 03:08:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1136. [2021-11-23 03:08:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 794 states have (on average 1.5478589420654911) internal successors, (1229), 846 states have internal predecessors, (1229), 270 states have call successors, (270), 63 states have call predecessors, (270), 71 states have return successors, (286), 263 states have call predecessors, (286), 265 states have call successors, (286) [2021-11-23 03:08:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1785 transitions. [2021-11-23 03:08:36,248 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1785 transitions. Word has length 74 [2021-11-23 03:08:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:36,249 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1785 transitions. [2021-11-23 03:08:36,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-23 03:08:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1785 transitions. [2021-11-23 03:08:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 03:08:36,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:36,255 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:36,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:08:36,261 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1570471703, now seen corresponding path program 1 times [2021-11-23 03:08:36,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:36,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233809726] [2021-11-23 03:08:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:36,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:08:36,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233809726] [2021-11-23 03:08:36,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233809726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:36,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:36,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:08:36,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399504070] [2021-11-23 03:08:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:36,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:08:36,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:08:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:08:36,479 INFO L87 Difference]: Start difference. First operand 1136 states and 1785 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 03:08:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:38,283 INFO L93 Difference]: Finished difference Result 2180 states and 3442 transitions. [2021-11-23 03:08:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:08:38,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2021-11-23 03:08:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:38,298 INFO L225 Difference]: With dead ends: 2180 [2021-11-23 03:08:38,299 INFO L226 Difference]: Without dead ends: 1324 [2021-11-23 03:08:38,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:08:38,309 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 900 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:38,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1767 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 03:08:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-11-23 03:08:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1163. [2021-11-23 03:08:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 812 states have (on average 1.54064039408867) internal successors, (1251), 868 states have internal predecessors, (1251), 271 states have call successors, (271), 68 states have call predecessors, (271), 79 states have return successors, (297), 263 states have call predecessors, (297), 266 states have call successors, (297) [2021-11-23 03:08:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1819 transitions. [2021-11-23 03:08:38,387 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1819 transitions. Word has length 76 [2021-11-23 03:08:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:38,409 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1819 transitions. [2021-11-23 03:08:38,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 03:08:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1819 transitions. [2021-11-23 03:08:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 03:08:38,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:38,414 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:38,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:08:38,414 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:38,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash -72769100, now seen corresponding path program 1 times [2021-11-23 03:08:38,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:38,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674764858] [2021-11-23 03:08:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:38,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:08:38,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:38,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674764858] [2021-11-23 03:08:38,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674764858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:38,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:38,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:08:38,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255811851] [2021-11-23 03:08:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:38,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:08:38,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:08:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:08:38,623 INFO L87 Difference]: Start difference. First operand 1163 states and 1819 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:08:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:39,109 INFO L93 Difference]: Finished difference Result 1235 states and 1932 transitions. [2021-11-23 03:08:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:08:39,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2021-11-23 03:08:39,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:39,123 INFO L225 Difference]: With dead ends: 1235 [2021-11-23 03:08:39,123 INFO L226 Difference]: Without dead ends: 1220 [2021-11-23 03:08:39,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:08:39,126 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 632 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:39,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 1370 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:08:39,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-23 03:08:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1167. [2021-11-23 03:08:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 816 states have (on average 1.5379901960784315) internal successors, (1255), 872 states have internal predecessors, (1255), 271 states have call successors, (271), 68 states have call predecessors, (271), 79 states have return successors, (297), 263 states have call predecessors, (297), 266 states have call successors, (297) [2021-11-23 03:08:39,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1823 transitions. [2021-11-23 03:08:39,214 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1823 transitions. Word has length 83 [2021-11-23 03:08:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:39,214 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1823 transitions. [2021-11-23 03:08:39,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:08:39,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1823 transitions. [2021-11-23 03:08:39,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:08:39,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:39,223 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:39,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:08:39,224 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2034699635, now seen corresponding path program 1 times [2021-11-23 03:08:39,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:39,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770056376] [2021-11-23 03:08:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:39,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 03:08:39,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:39,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770056376] [2021-11-23 03:08:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770056376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:39,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:39,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:08:39,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336517101] [2021-11-23 03:08:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:39,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:08:39,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:08:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:08:39,394 INFO L87 Difference]: Start difference. First operand 1167 states and 1823 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-23 03:08:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:39,594 INFO L93 Difference]: Finished difference Result 1186 states and 1847 transitions. [2021-11-23 03:08:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:08:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 85 [2021-11-23 03:08:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:39,604 INFO L225 Difference]: With dead ends: 1186 [2021-11-23 03:08:39,605 INFO L226 Difference]: Without dead ends: 1171 [2021-11-23 03:08:39,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:08:39,610 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 41 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:39,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 2506 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:08:39,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-23 03:08:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1167. [2021-11-23 03:08:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 816 states have (on average 1.5343137254901962) internal successors, (1252), 872 states have internal predecessors, (1252), 271 states have call successors, (271), 68 states have call predecessors, (271), 79 states have return successors, (297), 263 states have call predecessors, (297), 266 states have call successors, (297) [2021-11-23 03:08:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1820 transitions. [2021-11-23 03:08:39,703 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1820 transitions. Word has length 85 [2021-11-23 03:08:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:39,704 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1820 transitions. [2021-11-23 03:08:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-23 03:08:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1820 transitions. [2021-11-23 03:08:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 03:08:39,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:39,709 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:39,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:08:39,710 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -615279116, now seen corresponding path program 1 times [2021-11-23 03:08:39,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:39,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587151996] [2021-11-23 03:08:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:39,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:08:39,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:39,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587151996] [2021-11-23 03:08:39,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587151996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:08:39,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030511953] [2021-11-23 03:08:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:39,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:08:39,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:08:39,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:08:40,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:08:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:40,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 03:08:40,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:08:42,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:08:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 03:08:45,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030511953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:08:45,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [151059439] [2021-11-23 03:08:45,868 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2021-11-23 03:08:45,869 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:08:45,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:08:45,880 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:08:45,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:08:53,172 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 578 for LOIs [2021-11-23 03:09:39,024 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2021-11-23 03:09:42,593 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 82 for LOIs [2021-11-23 03:09:43,132 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 42 for LOIs [2021-11-23 03:09:43,162 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 587 for LOIs [2021-11-23 03:09:46,956 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 438 for LOIs [2021-11-23 03:09:47,190 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 90 for LOIs [2021-11-23 03:09:47,310 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 90 for LOIs [2021-11-23 03:09:47,332 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 550 for LOIs [2021-11-23 03:09:50,068 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 821 for LOIs [2021-11-23 03:09:55,851 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 648 for LOIs [2021-11-23 03:09:56,288 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:10:11,849 WARN L227 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 648 DAG size of output: 515 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:22,088 WARN L227 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 688 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:28,304 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 669 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:34,573 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 669 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:52,913 WARN L227 SmtUtils]: Spent 17.03s on a formula simplification. DAG size of input: 821 DAG size of output: 675 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:00,343 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 830 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:51,556 WARN L227 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 506 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:01,892 WARN L227 SmtUtils]: Spent 9.23s on a formula simplification. DAG size of input: 508 DAG size of output: 475 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:12,458 WARN L227 SmtUtils]: Spent 9.45s on a formula simplification. DAG size of input: 511 DAG size of output: 478 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:21,477 WARN L227 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 438 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:29,461 WARN L227 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 442 DAG size of output: 431 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:38,775 WARN L227 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 520 DAG size of output: 465 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:49,876 WARN L227 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 520 DAG size of output: 473 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:01,246 WARN L227 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 523 DAG size of output: 476 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:10,875 WARN L227 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 526 DAG size of output: 472 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:20,716 WARN L227 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 532 DAG size of output: 478 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:30,748 WARN L227 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 548 DAG size of output: 488 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:30,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [151059439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:13:30,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:13:30,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [12, 12, 12] total 85 [2021-11-23 03:13:30,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245527152] [2021-11-23 03:13:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:13:30,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-23 03:13:30,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:13:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-23 03:13:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=6584, Unknown=0, NotChecked=0, Total=7140 [2021-11-23 03:13:30,756 INFO L87 Difference]: Start difference. First operand 1167 states and 1820 transitions. Second operand has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-23 03:13:37,877 WARN L227 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 636 DAG size of output: 590 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:44,800 WARN L227 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 648 DAG size of output: 597 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:50,414 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 736 DAG size of output: 622 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:56,298 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 599 DAG size of output: 553 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:14:01,725 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 611 DAG size of output: 560 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:14:44,676 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 433 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:14:51,550 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 446 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:15:53,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:53,425 INFO L93 Difference]: Finished difference Result 2968 states and 4661 transitions. [2021-11-23 03:15:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-23 03:15:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) Word has length 92 [2021-11-23 03:15:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:53,452 INFO L225 Difference]: With dead ends: 2968 [2021-11-23 03:15:53,452 INFO L226 Difference]: Without dead ends: 1824 [2021-11-23 03:15:53,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3312 ImplicationChecksByTransitivity, 275.0s TimeCoverageRelationStatistics Valid=687, Invalid=8433, Unknown=0, NotChecked=0, Total=9120 [2021-11-23 03:15:53,461 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 1002 mSDsluCounter, 9702 mSDsCounter, 0 mSdLazyCounter, 19601 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 10215 SdHoareTripleChecker+Invalid, 19747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 19601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:53,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 10215 Invalid, 19747 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [146 Valid, 19601 Invalid, 0 Unknown, 0 Unchecked, 82.1s Time] [2021-11-23 03:15:53,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2021-11-23 03:15:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1685. [2021-11-23 03:15:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1200 states have (on average 1.5283333333333333) internal successors, (1834), 1272 states have internal predecessors, (1834), 373 states have call successors, (373), 95 states have call predecessors, (373), 111 states have return successors, (408), 366 states have call predecessors, (408), 368 states have call successors, (408) [2021-11-23 03:15:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2615 transitions. [2021-11-23 03:15:53,841 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2615 transitions. Word has length 92 [2021-11-23 03:15:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:53,841 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2615 transitions. [2021-11-23 03:15:53,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-23 03:15:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2615 transitions. [2021-11-23 03:15:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 03:15:53,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:53,845 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:53,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:15:54,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 03:15:54,072 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:15:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1529592686, now seen corresponding path program 1 times [2021-11-23 03:15:54,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:54,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816326311] [2021-11-23 03:15:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:54,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:15:54,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:54,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816326311] [2021-11-23 03:15:54,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816326311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:54,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:54,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:15:54,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116550392] [2021-11-23 03:15:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:54,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:15:54,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:15:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:15:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:15:54,327 INFO L87 Difference]: Start difference. First operand 1685 states and 2615 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-23 03:15:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:56,590 INFO L93 Difference]: Finished difference Result 3368 states and 5361 transitions. [2021-11-23 03:15:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:15:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 94 [2021-11-23 03:15:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:56,607 INFO L225 Difference]: With dead ends: 3368 [2021-11-23 03:15:56,607 INFO L226 Difference]: Without dead ends: 2484 [2021-11-23 03:15:56,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:15:56,613 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 912 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:56,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 1968 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2750 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:15:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-11-23 03:15:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2146. [2021-11-23 03:15:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 1473 states have (on average 1.525458248472505) internal successors, (2247), 1585 states have internal predecessors, (2247), 544 states have call successors, (544), 108 states have call predecessors, (544), 128 states have return successors, (591), 536 states have call predecessors, (591), 539 states have call successors, (591) [2021-11-23 03:15:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3382 transitions. [2021-11-23 03:15:57,046 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3382 transitions. Word has length 94 [2021-11-23 03:15:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:57,046 INFO L470 AbstractCegarLoop]: Abstraction has 2146 states and 3382 transitions. [2021-11-23 03:15:57,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-23 03:15:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3382 transitions. [2021-11-23 03:15:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:15:57,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:57,050 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:57,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:15:57,050 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:15:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:57,051 INFO L85 PathProgramCache]: Analyzing trace with hash -934847287, now seen corresponding path program 1 times [2021-11-23 03:15:57,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:57,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847240530] [2021-11-23 03:15:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:57,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:15:57,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:57,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847240530] [2021-11-23 03:15:57,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847240530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:57,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:57,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:15:57,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083116147] [2021-11-23 03:15:57,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:57,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:15:57,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:15:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:15:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:57,177 INFO L87 Difference]: Start difference. First operand 2146 states and 3382 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 03:15:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:58,132 INFO L93 Difference]: Finished difference Result 5890 states and 9382 transitions. [2021-11-23 03:15:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:15:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2021-11-23 03:15:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:58,164 INFO L225 Difference]: With dead ends: 5890 [2021-11-23 03:15:58,164 INFO L226 Difference]: Without dead ends: 4020 [2021-11-23 03:15:58,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:58,177 INFO L933 BasicCegarLoop]: 974 mSDtfsCounter, 492 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:58,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 1461 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2021-11-23 03:15:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 4017. [2021-11-23 03:15:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 2774 states have (on average 1.533886085075703) internal successors, (4255), 2977 states have internal predecessors, (4255), 1003 states have call successors, (1003), 201 states have call predecessors, (1003), 239 states have return successors, (1115), 994 states have call predecessors, (1115), 998 states have call successors, (1115) [2021-11-23 03:15:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6373 transitions. [2021-11-23 03:15:59,150 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6373 transitions. Word has length 93 [2021-11-23 03:15:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:59,150 INFO L470 AbstractCegarLoop]: Abstraction has 4017 states and 6373 transitions. [2021-11-23 03:15:59,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 03:15:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6373 transitions. [2021-11-23 03:15:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:15:59,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:59,154 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:59,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:15:59,155 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:15:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1191814703, now seen corresponding path program 1 times [2021-11-23 03:15:59,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:15:59,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685505185] [2021-11-23 03:15:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:59,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:15:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:15:59,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:15:59,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685505185] [2021-11-23 03:15:59,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685505185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:15:59,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291508636] [2021-11-23 03:15:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:59,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:15:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:15:59,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:15:59,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b254cb39-d27c-49fc-b0af-991622a8bd7b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:15:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:59,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 03:15:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:16:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:16:01,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:16:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 03:16:04,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291508636] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:16:04,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1350934278] [2021-11-23 03:16:04,005 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2021-11-23 03:16:04,006 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:16:04,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:16:04,007 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:16:04,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:16:09,444 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 578 for LOIs [2021-11-23 03:16:51,814 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2021-11-23 03:16:54,891 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 82 for LOIs [2021-11-23 03:16:55,521 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 25 for LOIs [2021-11-23 03:16:55,531 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 587 for LOIs [2021-11-23 03:16:59,310 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 432 for LOIs [2021-11-23 03:16:59,537 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 90 for LOIs [2021-11-23 03:16:59,669 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 90 for LOIs [2021-11-23 03:16:59,691 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 550 for LOIs [2021-11-23 03:17:02,367 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 821 for LOIs [2021-11-23 03:17:08,095 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 648 for LOIs [2021-11-23 03:17:08,540 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:17:24,135 WARN L227 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 648 DAG size of output: 515 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:34,550 WARN L227 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 688 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:40,814 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 669 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:17:47,055 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 669 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:18:05,824 WARN L227 SmtUtils]: Spent 17.31s on a formula simplification. DAG size of input: 821 DAG size of output: 675 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:18:13,266 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 830 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:02,299 WARN L227 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 500 DAG size of output: 451 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:11,596 WARN L227 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 502 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:20,955 WARN L227 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 505 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:29,433 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 432 DAG size of output: 416 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:36,814 WARN L227 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 436 DAG size of output: 420 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:19:46,406 WARN L227 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 514 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:02,445 WARN L227 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 517 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:20:13,298 WARN L227 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 520 DAG size of output: 470 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)