./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:24:07,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:24:07,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:24:08,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:24:08,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:24:08,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:24:08,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:24:08,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:24:08,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:24:08,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:24:08,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:24:08,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:24:08,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:24:08,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:24:08,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:24:08,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:24:08,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:24:08,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:24:08,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:24:08,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:24:08,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:24:08,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:24:08,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:24:08,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:24:08,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:24:08,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:24:08,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:24:08,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:24:08,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:24:08,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:24:08,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:24:08,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:24:08,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:24:08,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:24:08,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:24:08,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:24:08,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:24:08,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:24:08,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:24:08,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:24:08,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:24:08,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:24:08,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:24:08,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:24:08,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:24:08,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:24:08,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:24:08,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:24:08,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:24:08,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:24:08,171 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:24:08,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:24:08,172 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:24:08,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:24:08,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:24:08,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:24:08,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:24:08,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:24:08,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:24:08,174 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:24:08,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:24:08,174 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:24:08,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:24:08,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:24:08,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:24:08,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:24:08,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:08,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:24:08,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:24:08,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:24:08,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:24:08,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:24:08,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:24:08,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:24:08,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:24:08,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd [2022-10-17 10:24:08,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:24:08,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:24:08,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:24:08,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:24:08,456 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:24:08,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2022-10-17 10:24:08,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/data/386f90740/b39e7a1145f0481cb67ef00f3e0840f4/FLAG7cc2e2e92 [2022-10-17 10:24:09,122 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:24:09,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2022-10-17 10:24:09,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/data/386f90740/b39e7a1145f0481cb67ef00f3e0840f4/FLAG7cc2e2e92 [2022-10-17 10:24:09,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/data/386f90740/b39e7a1145f0481cb67ef00f3e0840f4 [2022-10-17 10:24:09,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:24:09,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:24:09,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:09,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:24:09,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:24:09,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:09" (1/1) ... [2022-10-17 10:24:09,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1187c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:09, skipping insertion in model container [2022-10-17 10:24:09,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:09" (1/1) ... [2022-10-17 10:24:09,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:24:09,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:24:10,042 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_4517ea80-19ea-4790-9f98-d0f385f49a13/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2022-10-17 10:24:10,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:10,072 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:24:10,199 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_4517ea80-19ea-4790-9f98-d0f385f49a13/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2022-10-17 10:24:10,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:10,235 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:24:10,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10 WrapperNode [2022-10-17 10:24:10,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:10,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:10,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:24:10,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:24:10,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,353 INFO L138 Inliner]: procedures = 91, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 863 [2022-10-17 10:24:10,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:10,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:24:10,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:24:10,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:24:10,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:24:10,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:24:10,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:24:10,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:24:10,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (1/1) ... [2022-10-17 10:24:10,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:10,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:10,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:24:10,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517ea80-19ea-4790-9f98-d0f385f49a13/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:24:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:24:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-10-17 10:24:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-10-17 10:24:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-10-17 10:24:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-10-17 10:24:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-10-17 10:24:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-10-17 10:24:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-10-17 10:24:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-10-17 10:24:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-10-17 10:24:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-10-17 10:24:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-10-17 10:24:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-10-17 10:24:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 10:24:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 10:24:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 10:24:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 10:24:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 10:24:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 10:24:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-10-17 10:24:10,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-10-17 10:24:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-10-17 10:24:10,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-10-17 10:24:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-10-17 10:24:10,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-10-17 10:24:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-10-17 10:24:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-10-17 10:24:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-10-17 10:24:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-10-17 10:24:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-10-17 10:24:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-10-17 10:24:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-10-17 10:24:10,598 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-10-17 10:24:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-10-17 10:24:10,598 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-10-17 10:24:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-10-17 10:24:10,599 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-10-17 10:24:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-10-17 10:24:10,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-10-17 10:24:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-10-17 10:24:10,599 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-10-17 10:24:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:24:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-10-17 10:24:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-10-17 10:24:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-10-17 10:24:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-10-17 10:24:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-10-17 10:24:10,600 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-10-17 10:24:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-10-17 10:24:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-10-17 10:24:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:24:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:24:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-10-17 10:24:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-10-17 10:24:10,739 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:24:10,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:24:11,976 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:24:11,990 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:24:11,990 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:24:11,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:11 BoogieIcfgContainer [2022-10-17 10:24:11,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:24:11,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:24:11,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:24:12,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:24:12,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:24:09" (1/3) ... [2022-10-17 10:24:12,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e73efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:12, skipping insertion in model container [2022-10-17 10:24:12,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:10" (2/3) ... [2022-10-17 10:24:12,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e73efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:12, skipping insertion in model container [2022-10-17 10:24:12,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:11" (3/3) ... [2022-10-17 10:24:12,003 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2022-10-17 10:24:12,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:24:12,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:24:12,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:24:12,124 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c438f4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:24:12,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:24:12,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 469 states have internal predecessors, (757), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-10-17 10:24:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 10:24:12,149 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:12,149 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:24:12,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1615056188, now seen corresponding path program 1 times [2022-10-17 10:24:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:12,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937375686] [2022-10-17 10:24:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:24:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:24:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:24:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:24:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:24:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:24:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:13,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937375686] [2022-10-17 10:24:13,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937375686] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:13,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:13,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:24:13,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580161191] [2022-10-17 10:24:13,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:13,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:24:13,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:13,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:24:13,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:24:13,493 INFO L87 Difference]: Start difference. First operand has 578 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 469 states have internal predecessors, (757), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-17 10:24:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:22,139 INFO L93 Difference]: Finished difference Result 1437 states and 2483 transitions. [2022-10-17 10:24:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:24:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-10-17 10:24:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:22,180 INFO L225 Difference]: With dead ends: 1437 [2022-10-17 10:24:22,180 INFO L226 Difference]: Without dead ends: 863 [2022-10-17 10:24:22,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:24:22,194 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 922 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 5083 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 5083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:22,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 2998 Invalid, 5302 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [219 Valid, 5083 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-10-17 10:24:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-10-17 10:24:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 581. [2022-10-17 10:24:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 452 states have (on average 1.676991150442478) internal successors, (758), 472 states have internal predecessors, (758), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2022-10-17 10:24:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 963 transitions. [2022-10-17 10:24:22,516 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 963 transitions. Word has length 63 [2022-10-17 10:24:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:22,517 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 963 transitions. [2022-10-17 10:24:22,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-17 10:24:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 963 transitions. [2022-10-17 10:24:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 10:24:22,533 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:22,533 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:24:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:24:22,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash -102377112, now seen corresponding path program 1 times [2022-10-17 10:24:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:22,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496032278] [2022-10-17 10:24:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:24:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:24:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:24:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:24:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:24:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:24:23,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:23,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496032278] [2022-10-17 10:24:23,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496032278] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:23,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:23,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:24:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511831249] [2022-10-17 10:24:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:23,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:24:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:24:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:24:23,241 INFO L87 Difference]: Start difference. First operand 581 states and 963 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-17 10:24:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:30,859 INFO L93 Difference]: Finished difference Result 1431 states and 2447 transitions. [2022-10-17 10:24:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:24:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2022-10-17 10:24:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:30,871 INFO L225 Difference]: With dead ends: 1431 [2022-10-17 10:24:30,871 INFO L226 Difference]: Without dead ends: 866 [2022-10-17 10:24:30,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:24:30,878 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1484 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 5394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:30,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 3120 Invalid, 5394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [422 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-10-17 10:24:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-10-17 10:24:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 581. [2022-10-17 10:24:31,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 452 states have (on average 1.674778761061947) internal successors, (757), 472 states have internal predecessors, (757), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2022-10-17 10:24:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 962 transitions. [2022-10-17 10:24:31,031 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 962 transitions. Word has length 64 [2022-10-17 10:24:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:31,032 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 962 transitions. [2022-10-17 10:24:31,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-17 10:24:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 962 transitions. [2022-10-17 10:24:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 10:24:31,035 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:31,035 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:24:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:24:31,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash 638342732, now seen corresponding path program 1 times [2022-10-17 10:24:31,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:31,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530079609] [2022-10-17 10:24:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:31,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:24:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:24:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:24:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:24:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:24:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:24:31,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:31,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530079609] [2022-10-17 10:24:31,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530079609] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:31,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:31,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:24:31,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954212939] [2022-10-17 10:24:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:31,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:24:31,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:24:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:24:31,581 INFO L87 Difference]: Start difference. First operand 581 states and 962 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:24:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:36,974 INFO L93 Difference]: Finished difference Result 1422 states and 2427 transitions. [2022-10-17 10:24:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:24:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-10-17 10:24:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:36,992 INFO L225 Difference]: With dead ends: 1422 [2022-10-17 10:24:36,992 INFO L226 Difference]: Without dead ends: 826 [2022-10-17 10:24:36,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:24:37,006 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 1403 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:37,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1816 Invalid, 2793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [430 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-10-17 10:24:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-10-17 10:24:37,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 557. [2022-10-17 10:24:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 431 states have (on average 1.665893271461717) internal successors, (718), 449 states have internal predecessors, (718), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-10-17 10:24:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 919 transitions. [2022-10-17 10:24:37,161 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 919 transitions. Word has length 64 [2022-10-17 10:24:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:37,164 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 919 transitions. [2022-10-17 10:24:37,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:24:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 919 transitions. [2022-10-17 10:24:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 10:24:37,167 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:37,167 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:24:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:24:37,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:37,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2003466896, now seen corresponding path program 1 times [2022-10-17 10:24:37,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:37,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911077705] [2022-10-17 10:24:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:24:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:24:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:24:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:24:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:24:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:24:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911077705] [2022-10-17 10:24:37,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911077705] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:37,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:37,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:24:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231760751] [2022-10-17 10:24:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:37,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:24:37,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:24:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:24:37,725 INFO L87 Difference]: Start difference. First operand 557 states and 919 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)