./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.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_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0 --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 19aa3a10df20aa66b298603653689263cc3fd1e3f00b1be832baa1f64aefda99 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:04:20,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:04:20,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:04:20,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:04:20,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:04:20,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:04:20,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:04:20,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:04:20,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:04:20,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:04:20,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:04:20,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:04:20,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:04:20,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:04:20,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:04:20,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:04:20,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:04:20,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:04:20,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:04:20,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:04:20,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:04:20,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:04:20,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:04:20,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:04:20,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:04:20,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:04:20,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:04:20,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:04:20,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:04:20,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:04:20,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:04:20,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:04:20,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:04:20,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:04:20,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:04:20,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:04:20,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:04:20,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:04:20,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:04:20,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:04:20,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:04:20,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:04:20,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:04:20,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:04:20,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:04:20,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:04:20,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:04:20,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:04:20,300 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:04:20,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:04:20,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:04:20,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:04:20,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:04:20,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:04:20,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:04:20,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:04:20,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:04:20,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:04:20,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:04:20,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:04:20,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:04:20,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:04:20,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:04:20,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:04:20,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:04:20,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:04:20,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:04:20,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:04:20,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:04:20,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:04:20,304 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:04:20,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:04:20,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:04:20,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:04:20,305 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_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19aa3a10df20aa66b298603653689263cc3fd1e3f00b1be832baa1f64aefda99 [2021-11-22 15:04:20,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:04:20,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:04:20,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:04:20,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:04:20,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:04:20,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c [2021-11-22 15:04:20,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/data/34eaecb9b/6f72c52a44cb4c14b284aa552cbbaaba/FLAG118ef1320 [2021-11-22 15:04:21,747 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:04:21,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c [2021-11-22 15:04:21,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/data/34eaecb9b/6f72c52a44cb4c14b284aa552cbbaaba/FLAG118ef1320 [2021-11-22 15:04:22,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/data/34eaecb9b/6f72c52a44cb4c14b284aa552cbbaaba [2021-11-22 15:04:22,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:04:22,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:04:22,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:04:22,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:04:22,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:04:22,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:04:22" (1/1) ... [2021-11-22 15:04:22,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22918bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:22, skipping insertion in model container [2021-11-22 15:04:22,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:04:22" (1/1) ... [2021-11-22 15:04:22,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:04:22,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:04:24,832 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_d4933ded-fcaf-4548-b236-3a85895976ae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c[377069,377082] [2021-11-22 15:04:24,869 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_d4933ded-fcaf-4548-b236-3a85895976ae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c[383339,383352] [2021-11-22 15:04:25,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:04:25,286 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:04:26,577 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_d4933ded-fcaf-4548-b236-3a85895976ae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c[377069,377082] [2021-11-22 15:04:26,589 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_d4933ded-fcaf-4548-b236-3a85895976ae/sv-benchmarks/c/combinations/Problem05_label40+token_ring.13.cil-2.c[383339,383352] [2021-11-22 15:04:26,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:04:26,724 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:04:26,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26 WrapperNode [2021-11-22 15:04:26,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:04:26,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:04:26,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:04:26,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:04:26,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:26,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:27,432 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 75, calls inlined = 312, statements flattened = 17256 [2021-11-22 15:04:27,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:04:27,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:04:27,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:04:27,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:04:27,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:27,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:27,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:27,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:27,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:27,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:27,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:28,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:04:28,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:04:28,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:04:28,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:04:28,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (1/1) ... [2021-11-22 15:04:28,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:04:28,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:04:28,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:04:28,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4933ded-fcaf-4548-b236-3a85895976ae/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:04:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:04:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:04:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:04:28,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:04:28,667 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:04:28,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:04:37,350 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:04:37,414 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:04:37,414 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-22 15:04:37,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:04:37 BoogieIcfgContainer [2021-11-22 15:04:37,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:04:37,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:04:37,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:04:37,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:04:37,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:04:22" (1/3) ... [2021-11-22 15:04:37,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a124c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:04:37, skipping insertion in model container [2021-11-22 15:04:37,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:04:26" (2/3) ... [2021-11-22 15:04:37,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a124c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:04:37, skipping insertion in model container [2021-11-22 15:04:37,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:04:37" (3/3) ... [2021-11-22 15:04:37,434 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.13.cil-2.c [2021-11-22 15:04:37,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:04:37,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:04:37,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:04:37,521 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:04:37,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:04:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:37,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:37,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:37,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1887285597, now seen corresponding path program 1 times [2021-11-22 15:04:37,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897170423] [2021-11-22 15:04:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:37,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:37,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:37,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897170423] [2021-11-22 15:04:37,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897170423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:37,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:37,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:37,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321823971] [2021-11-22 15:04:37,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:37,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:04:37,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:04:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:37,974 INFO L87 Difference]: Start difference. First operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:38,363 INFO L93 Difference]: Finished difference Result 8406 states and 14203 transitions. [2021-11-22 15:04:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:04:38,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:38,404 INFO L225 Difference]: With dead ends: 8406 [2021-11-22 15:04:38,404 INFO L226 Difference]: Without dead ends: 4141 [2021-11-22 15:04:38,415 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 [2021-11-22 15:04:38,419 INFO L933 BasicCegarLoop]: 7014 mSDtfsCounter, 2983 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 11036 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:38,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2983 Valid, 11036 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:38,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2021-11-22 15:04:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4141. [2021-11-22 15:04:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4139 states have (on average 1.678183136023194) internal successors, (6946), 4140 states have internal predecessors, (6946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6946 transitions. [2021-11-22 15:04:38,638 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6946 transitions. Word has length 176 [2021-11-22 15:04:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:38,638 INFO L470 AbstractCegarLoop]: Abstraction has 4141 states and 6946 transitions. [2021-11-22 15:04:38,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6946 transitions. [2021-11-22 15:04:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:38,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:38,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:38,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:04:38,650 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash -484431269, now seen corresponding path program 1 times [2021-11-22 15:04:38,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:38,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852576690] [2021-11-22 15:04:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:38,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:39,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:39,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852576690] [2021-11-22 15:04:39,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852576690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:39,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:39,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:04:39,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529805549] [2021-11-22 15:04:39,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:39,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:04:39,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:04:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:39,081 INFO L87 Difference]: Start difference. First operand 4141 states and 6946 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:39,323 INFO L93 Difference]: Finished difference Result 7886 states and 12459 transitions. [2021-11-22 15:04:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:04:39,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:39,358 INFO L225 Difference]: With dead ends: 7886 [2021-11-22 15:04:39,358 INFO L226 Difference]: Without dead ends: 5886 [2021-11-22 15:04:39,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:39,370 INFO L933 BasicCegarLoop]: 6940 mSDtfsCounter, 6778 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6778 SdHoareTripleChecker+Valid, 9635 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:39,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6778 Valid, 9635 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-11-22 15:04:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5884. [2021-11-22 15:04:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.615096905814349) internal successors, (9500), 5883 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9500 transitions. [2021-11-22 15:04:39,573 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9500 transitions. Word has length 176 [2021-11-22 15:04:39,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:39,573 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9500 transitions. [2021-11-22 15:04:39,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:39,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9500 transitions. [2021-11-22 15:04:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:39,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:39,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:39,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:04:39,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash -400869733, now seen corresponding path program 1 times [2021-11-22 15:04:39,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351141151] [2021-11-22 15:04:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:39,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:39,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:39,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351141151] [2021-11-22 15:04:39,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351141151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:39,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:39,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:04:39,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606901060] [2021-11-22 15:04:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:39,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:04:39,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:39,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:04:39,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:39,727 INFO L87 Difference]: Start difference. First operand 5884 states and 9500 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:39,912 INFO L93 Difference]: Finished difference Result 9626 states and 15007 transitions. [2021-11-22 15:04:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:04:39,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:39,947 INFO L225 Difference]: With dead ends: 9626 [2021-11-22 15:04:39,947 INFO L226 Difference]: Without dead ends: 5884 [2021-11-22 15:04:39,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:39,962 INFO L933 BasicCegarLoop]: 6934 mSDtfsCounter, 6918 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6918 SdHoareTripleChecker+Valid, 6934 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:39,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6918 Valid, 6934 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2021-11-22 15:04:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2021-11-22 15:04:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6137368242094525) internal successors, (9492), 5883 states have internal predecessors, (9492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9492 transitions. [2021-11-22 15:04:40,191 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9492 transitions. Word has length 176 [2021-11-22 15:04:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:40,191 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9492 transitions. [2021-11-22 15:04:40,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9492 transitions. [2021-11-22 15:04:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:40,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:40,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:40,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:04:40,197 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1922194853, now seen corresponding path program 1 times [2021-11-22 15:04:40,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:40,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090765800] [2021-11-22 15:04:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:40,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:40,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:40,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090765800] [2021-11-22 15:04:40,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090765800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:40,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:40,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:04:40,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737079669] [2021-11-22 15:04:40,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:40,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:04:40,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:40,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:04:40,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:40,303 INFO L87 Difference]: Start difference. First operand 5884 states and 9492 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:40,497 INFO L93 Difference]: Finished difference Result 9625 states and 14990 transitions. [2021-11-22 15:04:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:04:40,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:40,530 INFO L225 Difference]: With dead ends: 9625 [2021-11-22 15:04:40,530 INFO L226 Difference]: Without dead ends: 5884 [2021-11-22 15:04:40,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:40,545 INFO L933 BasicCegarLoop]: 6929 mSDtfsCounter, 6912 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6912 SdHoareTripleChecker+Valid, 6929 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:40,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6912 Valid, 6929 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2021-11-22 15:04:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2021-11-22 15:04:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6123767426045563) internal successors, (9484), 5883 states have internal predecessors, (9484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9484 transitions. [2021-11-22 15:04:40,856 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9484 transitions. Word has length 176 [2021-11-22 15:04:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:40,857 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9484 transitions. [2021-11-22 15:04:40,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9484 transitions. [2021-11-22 15:04:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:40,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:40,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:40,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:04:40,861 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:40,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:40,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2109817189, now seen corresponding path program 1 times [2021-11-22 15:04:40,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:40,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170702211] [2021-11-22 15:04:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:40,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:40,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:40,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170702211] [2021-11-22 15:04:40,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170702211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:40,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:40,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:40,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830156272] [2021-11-22 15:04:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:40,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:40,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:40,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:40,923 INFO L87 Difference]: Start difference. First operand 5884 states and 9484 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:41,330 INFO L93 Difference]: Finished difference Result 13237 states and 20268 transitions. [2021-11-22 15:04:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:41,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:41,376 INFO L225 Difference]: With dead ends: 13237 [2021-11-22 15:04:41,377 INFO L226 Difference]: Without dead ends: 9497 [2021-11-22 15:04:41,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:41,386 INFO L933 BasicCegarLoop]: 7232 mSDtfsCounter, 16262 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16262 SdHoareTripleChecker+Valid, 9968 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:41,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16262 Valid, 9968 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9497 states. [2021-11-22 15:04:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9497 to 5884. [2021-11-22 15:04:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6118667120027201) internal successors, (9481), 5883 states have internal predecessors, (9481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9481 transitions. [2021-11-22 15:04:41,630 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9481 transitions. Word has length 176 [2021-11-22 15:04:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:41,630 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9481 transitions. [2021-11-22 15:04:41,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9481 transitions. [2021-11-22 15:04:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:41,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:41,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:41,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:04:41,637 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:41,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 779958429, now seen corresponding path program 1 times [2021-11-22 15:04:41,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:41,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426427072] [2021-11-22 15:04:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:41,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:41,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:41,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426427072] [2021-11-22 15:04:41,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426427072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:41,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:41,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:41,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094215635] [2021-11-22 15:04:41,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:41,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:41,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:41,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:41,693 INFO L87 Difference]: Start difference. First operand 5884 states and 9481 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:42,154 INFO L93 Difference]: Finished difference Result 13235 states and 20257 transitions. [2021-11-22 15:04:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:42,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:42,177 INFO L225 Difference]: With dead ends: 13235 [2021-11-22 15:04:42,177 INFO L226 Difference]: Without dead ends: 9496 [2021-11-22 15:04:42,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:42,187 INFO L933 BasicCegarLoop]: 9653 mSDtfsCounter, 13829 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13829 SdHoareTripleChecker+Valid, 12386 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:42,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13829 Valid, 12386 Invalid, 34 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2021-11-22 15:04:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 5884. [2021-11-22 15:04:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.611356681400884) internal successors, (9478), 5883 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9478 transitions. [2021-11-22 15:04:42,471 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9478 transitions. Word has length 176 [2021-11-22 15:04:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:42,472 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9478 transitions. [2021-11-22 15:04:42,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9478 transitions. [2021-11-22 15:04:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:42,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:42,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:42,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:04:42,476 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1620674981, now seen corresponding path program 1 times [2021-11-22 15:04:42,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395375198] [2021-11-22 15:04:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:42,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:42,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:42,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395375198] [2021-11-22 15:04:42,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395375198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:42,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:42,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:42,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099832869] [2021-11-22 15:04:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:42,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:42,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:42,532 INFO L87 Difference]: Start difference. First operand 5884 states and 9478 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:43,068 INFO L93 Difference]: Finished difference Result 13231 states and 20242 transitions. [2021-11-22 15:04:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:43,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:43,091 INFO L225 Difference]: With dead ends: 13231 [2021-11-22 15:04:43,092 INFO L226 Difference]: Without dead ends: 9494 [2021-11-22 15:04:43,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:43,102 INFO L933 BasicCegarLoop]: 9646 mSDtfsCounter, 13823 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13823 SdHoareTripleChecker+Valid, 12374 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:43,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13823 Valid, 12374 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9494 states. [2021-11-22 15:04:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9494 to 5884. [2021-11-22 15:04:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.610846650799048) internal successors, (9475), 5883 states have internal predecessors, (9475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9475 transitions. [2021-11-22 15:04:43,436 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9475 transitions. Word has length 176 [2021-11-22 15:04:43,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:43,436 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9475 transitions. [2021-11-22 15:04:43,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9475 transitions. [2021-11-22 15:04:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:43,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:43,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:43,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:04:43,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:43,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1751124889, now seen corresponding path program 1 times [2021-11-22 15:04:43,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:43,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881615917] [2021-11-22 15:04:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:43,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:43,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881615917] [2021-11-22 15:04:43,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881615917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:43,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:43,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:04:43,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357930825] [2021-11-22 15:04:43,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:43,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:04:43,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:04:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:43,504 INFO L87 Difference]: Start difference. First operand 5884 states and 9475 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:43,766 INFO L93 Difference]: Finished difference Result 9620 states and 14950 transitions. [2021-11-22 15:04:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:04:43,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:43,782 INFO L225 Difference]: With dead ends: 9620 [2021-11-22 15:04:43,783 INFO L226 Difference]: Without dead ends: 5884 [2021-11-22 15:04:43,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:43,791 INFO L933 BasicCegarLoop]: 6918 mSDtfsCounter, 6896 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6896 SdHoareTripleChecker+Valid, 6918 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:43,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6896 Valid, 6918 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2021-11-22 15:04:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2021-11-22 15:04:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6094865691941516) internal successors, (9467), 5883 states have internal predecessors, (9467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9467 transitions. [2021-11-22 15:04:44,083 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9467 transitions. Word has length 176 [2021-11-22 15:04:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:44,084 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9467 transitions. [2021-11-22 15:04:44,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9467 transitions. [2021-11-22 15:04:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:44,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:44,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:44,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:04:44,089 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1742620505, now seen corresponding path program 1 times [2021-11-22 15:04:44,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:44,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33351106] [2021-11-22 15:04:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:44,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:44,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:44,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33351106] [2021-11-22 15:04:44,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33351106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:44,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:44,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:44,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271751188] [2021-11-22 15:04:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:44,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:44,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:44,141 INFO L87 Difference]: Start difference. First operand 5884 states and 9467 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:44,738 INFO L93 Difference]: Finished difference Result 13227 states and 20206 transitions. [2021-11-22 15:04:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:44,761 INFO L225 Difference]: With dead ends: 13227 [2021-11-22 15:04:44,761 INFO L226 Difference]: Without dead ends: 9492 [2021-11-22 15:04:44,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:44,771 INFO L933 BasicCegarLoop]: 9631 mSDtfsCounter, 13807 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13807 SdHoareTripleChecker+Valid, 12351 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:44,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13807 Valid, 12351 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2021-11-22 15:04:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 5884. [2021-11-22 15:04:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6089765385923156) internal successors, (9464), 5883 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9464 transitions. [2021-11-22 15:04:45,119 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9464 transitions. Word has length 176 [2021-11-22 15:04:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:45,120 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9464 transitions. [2021-11-22 15:04:45,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9464 transitions. [2021-11-22 15:04:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:45,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:45,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:45,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:04:45,124 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1477973015, now seen corresponding path program 1 times [2021-11-22 15:04:45,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:45,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954236570] [2021-11-22 15:04:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:45,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:45,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954236570] [2021-11-22 15:04:45,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954236570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:45,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:45,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:45,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082188140] [2021-11-22 15:04:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:45,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:45,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:45,185 INFO L87 Difference]: Start difference. First operand 5884 states and 9464 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:45,747 INFO L93 Difference]: Finished difference Result 13225 states and 20195 transitions. [2021-11-22 15:04:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:45,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:45,767 INFO L225 Difference]: With dead ends: 13225 [2021-11-22 15:04:45,768 INFO L226 Difference]: Without dead ends: 9491 [2021-11-22 15:04:45,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:45,776 INFO L933 BasicCegarLoop]: 9626 mSDtfsCounter, 13802 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13802 SdHoareTripleChecker+Valid, 12343 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:45,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13802 Valid, 12343 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2021-11-22 15:04:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 5884. [2021-11-22 15:04:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6084665079904794) internal successors, (9461), 5883 states have internal predecessors, (9461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9461 transitions. [2021-11-22 15:04:46,097 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9461 transitions. Word has length 176 [2021-11-22 15:04:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:46,098 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9461 transitions. [2021-11-22 15:04:46,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9461 transitions. [2021-11-22 15:04:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:46,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:46,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:46,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:04:46,102 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash -885868647, now seen corresponding path program 1 times [2021-11-22 15:04:46,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:46,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853112995] [2021-11-22 15:04:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:46,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:46,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:46,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853112995] [2021-11-22 15:04:46,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853112995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:46,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:46,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:46,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993266413] [2021-11-22 15:04:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:46,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:46,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:46,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:46,149 INFO L87 Difference]: Start difference. First operand 5884 states and 9461 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:46,662 INFO L93 Difference]: Finished difference Result 13223 states and 20184 transitions. [2021-11-22 15:04:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:46,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:46,683 INFO L225 Difference]: With dead ends: 13223 [2021-11-22 15:04:46,683 INFO L226 Difference]: Without dead ends: 9490 [2021-11-22 15:04:46,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:46,691 INFO L933 BasicCegarLoop]: 9621 mSDtfsCounter, 13797 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13797 SdHoareTripleChecker+Valid, 12335 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:46,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13797 Valid, 12335 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9490 states. [2021-11-22 15:04:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9490 to 5884. [2021-11-22 15:04:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6079564773886432) internal successors, (9458), 5883 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9458 transitions. [2021-11-22 15:04:46,984 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9458 transitions. Word has length 176 [2021-11-22 15:04:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:46,986 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9458 transitions. [2021-11-22 15:04:46,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9458 transitions. [2021-11-22 15:04:46,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:46,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:46,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:46,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:04:46,990 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2085919703, now seen corresponding path program 1 times [2021-11-22 15:04:46,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:46,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349031269] [2021-11-22 15:04:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:46,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:47,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:47,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349031269] [2021-11-22 15:04:47,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349031269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:47,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:47,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:47,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951178952] [2021-11-22 15:04:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:47,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:47,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:47,052 INFO L87 Difference]: Start difference. First operand 5884 states and 9458 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:47,540 INFO L93 Difference]: Finished difference Result 13221 states and 20173 transitions. [2021-11-22 15:04:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:47,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:47,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:47,559 INFO L225 Difference]: With dead ends: 13221 [2021-11-22 15:04:47,559 INFO L226 Difference]: Without dead ends: 9489 [2021-11-22 15:04:47,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:47,567 INFO L933 BasicCegarLoop]: 7198 mSDtfsCounter, 16212 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16212 SdHoareTripleChecker+Valid, 9909 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:47,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16212 Valid, 9909 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9489 states. [2021-11-22 15:04:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9489 to 5884. [2021-11-22 15:04:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6074464467868073) internal successors, (9455), 5883 states have internal predecessors, (9455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9455 transitions. [2021-11-22 15:04:47,850 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9455 transitions. Word has length 176 [2021-11-22 15:04:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:47,850 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9455 transitions. [2021-11-22 15:04:47,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9455 transitions. [2021-11-22 15:04:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:47,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:47,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:47,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:04:47,854 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash -312068135, now seen corresponding path program 1 times [2021-11-22 15:04:47,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:47,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436363240] [2021-11-22 15:04:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:47,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:47,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:47,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436363240] [2021-11-22 15:04:47,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436363240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:47,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:47,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:47,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803395862] [2021-11-22 15:04:47,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:47,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:47,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:47,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:47,898 INFO L87 Difference]: Start difference. First operand 5884 states and 9455 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:48,513 INFO L93 Difference]: Finished difference Result 13219 states and 20162 transitions. [2021-11-22 15:04:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:48,538 INFO L225 Difference]: With dead ends: 13219 [2021-11-22 15:04:48,538 INFO L226 Difference]: Without dead ends: 9488 [2021-11-22 15:04:48,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:48,547 INFO L933 BasicCegarLoop]: 9611 mSDtfsCounter, 13787 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13787 SdHoareTripleChecker+Valid, 12319 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:48,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13787 Valid, 12319 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9488 states. [2021-11-22 15:04:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9488 to 5884. [2021-11-22 15:04:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.606936416184971) internal successors, (9452), 5883 states have internal predecessors, (9452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9452 transitions. [2021-11-22 15:04:48,928 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9452 transitions. Word has length 176 [2021-11-22 15:04:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:48,929 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9452 transitions. [2021-11-22 15:04:48,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9452 transitions. [2021-11-22 15:04:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:48,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:48,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:48,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:04:48,933 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:48,933 INFO L85 PathProgramCache]: Analyzing trace with hash 26219415, now seen corresponding path program 1 times [2021-11-22 15:04:48,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:48,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176775501] [2021-11-22 15:04:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:48,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:48,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:48,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176775501] [2021-11-22 15:04:48,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176775501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:48,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:48,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:48,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848558179] [2021-11-22 15:04:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:48,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:48,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:48,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:48,996 INFO L87 Difference]: Start difference. First operand 5884 states and 9452 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:49,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:49,599 INFO L93 Difference]: Finished difference Result 13017 states and 19865 transitions. [2021-11-22 15:04:49,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:49,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:49,616 INFO L225 Difference]: With dead ends: 13017 [2021-11-22 15:04:49,616 INFO L226 Difference]: Without dead ends: 9288 [2021-11-22 15:04:49,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:49,626 INFO L933 BasicCegarLoop]: 9399 mSDtfsCounter, 13637 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13637 SdHoareTripleChecker+Valid, 12068 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:49,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13637 Valid, 12068 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2021-11-22 15:04:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 5884. [2021-11-22 15:04:49,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6064263855831349) internal successors, (9449), 5883 states have internal predecessors, (9449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9449 transitions. [2021-11-22 15:04:49,958 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9449 transitions. Word has length 176 [2021-11-22 15:04:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:49,959 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9449 transitions. [2021-11-22 15:04:49,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9449 transitions. [2021-11-22 15:04:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:49,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:49,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:49,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:04:49,962 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash -514210091, now seen corresponding path program 1 times [2021-11-22 15:04:49,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:49,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039958277] [2021-11-22 15:04:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:49,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:50,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:50,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039958277] [2021-11-22 15:04:50,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039958277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:50,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:50,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:50,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897403748] [2021-11-22 15:04:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:50,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:50,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:50,004 INFO L87 Difference]: Start difference. First operand 5884 states and 9449 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:50,666 INFO L93 Difference]: Finished difference Result 13013 states and 19852 transitions. [2021-11-22 15:04:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:50,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:50,683 INFO L225 Difference]: With dead ends: 13013 [2021-11-22 15:04:50,683 INFO L226 Difference]: Without dead ends: 9285 [2021-11-22 15:04:50,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:50,694 INFO L933 BasicCegarLoop]: 9393 mSDtfsCounter, 13631 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13631 SdHoareTripleChecker+Valid, 12059 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:50,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13631 Valid, 12059 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9285 states. [2021-11-22 15:04:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9285 to 5884. [2021-11-22 15:04:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.605916354981299) internal successors, (9446), 5883 states have internal predecessors, (9446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9446 transitions. [2021-11-22 15:04:51,018 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9446 transitions. Word has length 176 [2021-11-22 15:04:51,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:51,018 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9446 transitions. [2021-11-22 15:04:51,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9446 transitions. [2021-11-22 15:04:51,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:51,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:51,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:51,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:04:51,021 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:51,022 INFO L85 PathProgramCache]: Analyzing trace with hash -670190633, now seen corresponding path program 1 times [2021-11-22 15:04:51,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:51,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345237878] [2021-11-22 15:04:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:51,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:51,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345237878] [2021-11-22 15:04:51,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345237878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:51,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:51,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:04:51,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975657366] [2021-11-22 15:04:51,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:51,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:04:51,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:51,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:04:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:51,062 INFO L87 Difference]: Start difference. First operand 5884 states and 9446 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:51,353 INFO L93 Difference]: Finished difference Result 9611 states and 14882 transitions. [2021-11-22 15:04:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:04:51,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:51,364 INFO L225 Difference]: With dead ends: 9611 [2021-11-22 15:04:51,364 INFO L226 Difference]: Without dead ends: 5884 [2021-11-22 15:04:51,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:04:51,371 INFO L933 BasicCegarLoop]: 6867 mSDtfsCounter, 6710 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6710 SdHoareTripleChecker+Valid, 7005 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:51,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6710 Valid, 7005 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:04:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2021-11-22 15:04:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2021-11-22 15:04:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5994559673580415) internal successors, (9408), 5883 states have internal predecessors, (9408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9408 transitions. [2021-11-22 15:04:51,675 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9408 transitions. Word has length 176 [2021-11-22 15:04:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:51,675 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9408 transitions. [2021-11-22 15:04:51,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9408 transitions. [2021-11-22 15:04:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:51,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:51,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:51,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:04:51,678 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:51,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:51,678 INFO L85 PathProgramCache]: Analyzing trace with hash -611816168, now seen corresponding path program 1 times [2021-11-22 15:04:51,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:51,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819946284] [2021-11-22 15:04:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:51,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:51,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:51,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819946284] [2021-11-22 15:04:51,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819946284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:51,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:51,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:51,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34054452] [2021-11-22 15:04:51,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:51,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:51,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:51,721 INFO L87 Difference]: Start difference. First operand 5884 states and 9408 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:52,259 INFO L93 Difference]: Finished difference Result 13011 states and 19731 transitions. [2021-11-22 15:04:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:52,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:52,269 INFO L225 Difference]: With dead ends: 13011 [2021-11-22 15:04:52,269 INFO L226 Difference]: Without dead ends: 9285 [2021-11-22 15:04:52,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:52,278 INFO L933 BasicCegarLoop]: 9349 mSDtfsCounter, 13585 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13585 SdHoareTripleChecker+Valid, 11992 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:52,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13585 Valid, 11992 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9285 states. [2021-11-22 15:04:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9285 to 5884. [2021-11-22 15:04:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5989459367562053) internal successors, (9405), 5883 states have internal predecessors, (9405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9405 transitions. [2021-11-22 15:04:52,551 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9405 transitions. Word has length 176 [2021-11-22 15:04:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:52,552 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9405 transitions. [2021-11-22 15:04:52,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9405 transitions. [2021-11-22 15:04:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:52,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:52,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:52,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:04:52,555 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1895281306, now seen corresponding path program 1 times [2021-11-22 15:04:52,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:52,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758131089] [2021-11-22 15:04:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:52,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:52,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:52,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758131089] [2021-11-22 15:04:52,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758131089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:52,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:52,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:52,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998884364] [2021-11-22 15:04:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:52,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:52,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:52,599 INFO L87 Difference]: Start difference. First operand 5884 states and 9405 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:53,117 INFO L93 Difference]: Finished difference Result 13009 states and 19720 transitions. [2021-11-22 15:04:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:53,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:53,129 INFO L225 Difference]: With dead ends: 13009 [2021-11-22 15:04:53,129 INFO L226 Difference]: Without dead ends: 9284 [2021-11-22 15:04:53,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:53,135 INFO L933 BasicCegarLoop]: 9344 mSDtfsCounter, 13580 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13580 SdHoareTripleChecker+Valid, 11984 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:53,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13580 Valid, 11984 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9284 states. [2021-11-22 15:04:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9284 to 5884. [2021-11-22 15:04:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5984359061543694) internal successors, (9402), 5883 states have internal predecessors, (9402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9402 transitions. [2021-11-22 15:04:53,527 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9402 transitions. Word has length 176 [2021-11-22 15:04:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:53,527 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9402 transitions. [2021-11-22 15:04:53,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9402 transitions. [2021-11-22 15:04:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:53,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:53,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:53,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:04:53,530 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -240601896, now seen corresponding path program 1 times [2021-11-22 15:04:53,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:53,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625908917] [2021-11-22 15:04:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:53,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:53,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:53,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625908917] [2021-11-22 15:04:53,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625908917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:53,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:53,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:53,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610959184] [2021-11-22 15:04:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:53,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:53,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:53,579 INFO L87 Difference]: Start difference. First operand 5884 states and 9402 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:54,349 INFO L93 Difference]: Finished difference Result 13007 states and 19709 transitions. [2021-11-22 15:04:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:54,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:54,362 INFO L225 Difference]: With dead ends: 13007 [2021-11-22 15:04:54,362 INFO L226 Difference]: Without dead ends: 9283 [2021-11-22 15:04:54,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:54,369 INFO L933 BasicCegarLoop]: 7111 mSDtfsCounter, 15832 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15832 SdHoareTripleChecker+Valid, 9748 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:54,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15832 Valid, 9748 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9283 states. [2021-11-22 15:04:54,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9283 to 5884. [2021-11-22 15:04:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5979258755525332) internal successors, (9399), 5883 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9399 transitions. [2021-11-22 15:04:54,660 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9399 transitions. Word has length 176 [2021-11-22 15:04:54,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:54,660 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9399 transitions. [2021-11-22 15:04:54,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:54,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9399 transitions. [2021-11-22 15:04:54,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:54,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:54,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:54,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:04:54,662 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:54,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash -170954022, now seen corresponding path program 1 times [2021-11-22 15:04:54,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:54,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210979893] [2021-11-22 15:04:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:54,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:54,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:54,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210979893] [2021-11-22 15:04:54,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210979893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:54,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:54,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:54,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503854698] [2021-11-22 15:04:54,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:54,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:54,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:54,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:54,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:54,714 INFO L87 Difference]: Start difference. First operand 5884 states and 9399 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:55,508 INFO L93 Difference]: Finished difference Result 13005 states and 19698 transitions. [2021-11-22 15:04:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:55,520 INFO L225 Difference]: With dead ends: 13005 [2021-11-22 15:04:55,520 INFO L226 Difference]: Without dead ends: 9282 [2021-11-22 15:04:55,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:55,526 INFO L933 BasicCegarLoop]: 9334 mSDtfsCounter, 13570 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13570 SdHoareTripleChecker+Valid, 11968 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:55,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13570 Valid, 11968 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9282 states. [2021-11-22 15:04:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9282 to 5884. [2021-11-22 15:04:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.597415844950697) internal successors, (9396), 5883 states have internal predecessors, (9396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9396 transitions. [2021-11-22 15:04:55,819 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9396 transitions. Word has length 176 [2021-11-22 15:04:55,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:55,819 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9396 transitions. [2021-11-22 15:04:55,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9396 transitions. [2021-11-22 15:04:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:55,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:55,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:55,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:04:55,822 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:55,823 INFO L85 PathProgramCache]: Analyzing trace with hash 246934680, now seen corresponding path program 1 times [2021-11-22 15:04:55,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:55,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681163282] [2021-11-22 15:04:55,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:55,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:55,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:55,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681163282] [2021-11-22 15:04:55,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681163282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:55,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:55,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:55,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962920587] [2021-11-22 15:04:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:55,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:55,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:55,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:55,867 INFO L87 Difference]: Start difference. First operand 5884 states and 9396 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:56,510 INFO L93 Difference]: Finished difference Result 13001 states and 19683 transitions. [2021-11-22 15:04:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:56,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:56,527 INFO L225 Difference]: With dead ends: 13001 [2021-11-22 15:04:56,527 INFO L226 Difference]: Without dead ends: 9280 [2021-11-22 15:04:56,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:56,534 INFO L933 BasicCegarLoop]: 9327 mSDtfsCounter, 13564 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13564 SdHoareTripleChecker+Valid, 11956 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:56,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13564 Valid, 11956 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2021-11-22 15:04:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 5884. [2021-11-22 15:04:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.596905814348861) internal successors, (9393), 5883 states have internal predecessors, (9393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9393 transitions. [2021-11-22 15:04:56,850 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9393 transitions. Word has length 176 [2021-11-22 15:04:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:56,851 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9393 transitions. [2021-11-22 15:04:56,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9393 transitions. [2021-11-22 15:04:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:56,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:56,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:56,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:04:56,854 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1370505770, now seen corresponding path program 1 times [2021-11-22 15:04:56,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:56,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969824091] [2021-11-22 15:04:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:56,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:56,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:56,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969824091] [2021-11-22 15:04:56,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969824091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:56,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:56,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:56,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458033814] [2021-11-22 15:04:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:56,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:56,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:56,898 INFO L87 Difference]: Start difference. First operand 5884 states and 9393 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:57,544 INFO L93 Difference]: Finished difference Result 12999 states and 19672 transitions. [2021-11-22 15:04:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:57,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:57,555 INFO L225 Difference]: With dead ends: 12999 [2021-11-22 15:04:57,555 INFO L226 Difference]: Without dead ends: 9279 [2021-11-22 15:04:57,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:57,560 INFO L933 BasicCegarLoop]: 9322 mSDtfsCounter, 13559 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13559 SdHoareTripleChecker+Valid, 11948 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:57,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13559 Valid, 11948 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9279 states. [2021-11-22 15:04:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9279 to 5884. [2021-11-22 15:04:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5963957837470248) internal successors, (9390), 5883 states have internal predecessors, (9390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9390 transitions. [2021-11-22 15:04:57,866 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9390 transitions. Word has length 176 [2021-11-22 15:04:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:57,866 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9390 transitions. [2021-11-22 15:04:57,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9390 transitions. [2021-11-22 15:04:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:57,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:57,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:57,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:04:57,868 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1007039272, now seen corresponding path program 1 times [2021-11-22 15:04:57,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:57,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760674221] [2021-11-22 15:04:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:57,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:57,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:57,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760674221] [2021-11-22 15:04:57,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760674221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:57,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:57,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:57,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265346475] [2021-11-22 15:04:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:57,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:57,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:57,910 INFO L87 Difference]: Start difference. First operand 5884 states and 9390 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:58,618 INFO L93 Difference]: Finished difference Result 12997 states and 19661 transitions. [2021-11-22 15:04:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:58,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:58,627 INFO L225 Difference]: With dead ends: 12997 [2021-11-22 15:04:58,627 INFO L226 Difference]: Without dead ends: 9278 [2021-11-22 15:04:58,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:58,631 INFO L933 BasicCegarLoop]: 9317 mSDtfsCounter, 13554 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13554 SdHoareTripleChecker+Valid, 11940 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:58,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13554 Valid, 11940 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9278 states. [2021-11-22 15:04:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9278 to 5884. [2021-11-22 15:04:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5958857531451887) internal successors, (9387), 5883 states have internal predecessors, (9387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9387 transitions. [2021-11-22 15:04:58,952 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9387 transitions. Word has length 176 [2021-11-22 15:04:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:58,952 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9387 transitions. [2021-11-22 15:04:58,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9387 transitions. [2021-11-22 15:04:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:04:58,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:58,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:04:58,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:04:58,954 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:04:58,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:58,955 INFO L85 PathProgramCache]: Analyzing trace with hash -718219882, now seen corresponding path program 1 times [2021-11-22 15:04:58,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:58,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272154798] [2021-11-22 15:04:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:58,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:58,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:58,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272154798] [2021-11-22 15:04:58,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272154798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:58,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:58,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:04:58,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50254315] [2021-11-22 15:04:58,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:58,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:04:58,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:58,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:04:58,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:04:58,998 INFO L87 Difference]: Start difference. First operand 5884 states and 9387 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:59,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:59,728 INFO L93 Difference]: Finished difference Result 12995 states and 19650 transitions. [2021-11-22 15:04:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:04:59,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:04:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:59,738 INFO L225 Difference]: With dead ends: 12995 [2021-11-22 15:04:59,738 INFO L226 Difference]: Without dead ends: 9277 [2021-11-22 15:04:59,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:04:59,744 INFO L933 BasicCegarLoop]: 9312 mSDtfsCounter, 13549 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13549 SdHoareTripleChecker+Valid, 11932 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:59,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13549 Valid, 11932 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:04:59,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2021-11-22 15:05:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 5884. [2021-11-22 15:05:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5953757225433527) internal successors, (9384), 5883 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9384 transitions. [2021-11-22 15:05:00,081 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9384 transitions. Word has length 176 [2021-11-22 15:05:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:00,082 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9384 transitions. [2021-11-22 15:05:00,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9384 transitions. [2021-11-22 15:05:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:05:00,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:00,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:00,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:05:00,083 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1263092456, now seen corresponding path program 1 times [2021-11-22 15:05:00,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423471079] [2021-11-22 15:05:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:00,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:05:00,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423471079] [2021-11-22 15:05:00,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423471079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:00,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:00,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:05:00,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540005504] [2021-11-22 15:05:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:00,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:05:00,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:05:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:05:00,126 INFO L87 Difference]: Start difference. First operand 5884 states and 9384 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:01,002 INFO L93 Difference]: Finished difference Result 12993 states and 19639 transitions. [2021-11-22 15:05:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:05:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:05:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:01,010 INFO L225 Difference]: With dead ends: 12993 [2021-11-22 15:05:01,011 INFO L226 Difference]: Without dead ends: 9276 [2021-11-22 15:05:01,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:01,015 INFO L933 BasicCegarLoop]: 9307 mSDtfsCounter, 13544 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13544 SdHoareTripleChecker+Valid, 11924 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:01,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13544 Valid, 11924 Invalid, 135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:05:01,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2021-11-22 15:05:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 5884. [2021-11-22 15:05:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5948656919415165) internal successors, (9381), 5883 states have internal predecessors, (9381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9381 transitions. [2021-11-22 15:05:01,379 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9381 transitions. Word has length 176 [2021-11-22 15:05:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:01,379 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9381 transitions. [2021-11-22 15:05:01,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9381 transitions. [2021-11-22 15:05:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:05:01,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:01,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:01,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:05:01,381 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:01,381 INFO L85 PathProgramCache]: Analyzing trace with hash -587932330, now seen corresponding path program 1 times [2021-11-22 15:05:01,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:01,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095999097] [2021-11-22 15:05:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:01,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:05:01,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:01,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095999097] [2021-11-22 15:05:01,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095999097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:01,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:01,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:05:01,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394830139] [2021-11-22 15:05:01,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:01,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:05:01,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:01,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:05:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:05:01,423 INFO L87 Difference]: Start difference. First operand 5884 states and 9381 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:02,166 INFO L93 Difference]: Finished difference Result 12991 states and 19628 transitions. [2021-11-22 15:05:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:05:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:05:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:02,176 INFO L225 Difference]: With dead ends: 12991 [2021-11-22 15:05:02,176 INFO L226 Difference]: Without dead ends: 9275 [2021-11-22 15:05:02,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:02,182 INFO L933 BasicCegarLoop]: 7081 mSDtfsCounter, 15789 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15789 SdHoareTripleChecker+Valid, 9695 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:02,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15789 Valid, 9695 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:05:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9275 states. [2021-11-22 15:05:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9275 to 5884. [2021-11-22 15:05:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5943556613396803) internal successors, (9378), 5883 states have internal predecessors, (9378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9378 transitions. [2021-11-22 15:05:02,561 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9378 transitions. Word has length 176 [2021-11-22 15:05:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:02,562 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9378 transitions. [2021-11-22 15:05:02,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9378 transitions. [2021-11-22 15:05:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:05:02,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:02,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:02,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:05:02,565 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1535984296, now seen corresponding path program 1 times [2021-11-22 15:05:02,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:02,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031311053] [2021-11-22 15:05:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:02,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:05:02,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:02,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031311053] [2021-11-22 15:05:02,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031311053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:02,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:02,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:05:02,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478336914] [2021-11-22 15:05:02,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:02,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:05:02,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:05:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:02,631 INFO L87 Difference]: Start difference. First operand 5884 states and 9378 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:04,065 INFO L93 Difference]: Finished difference Result 16735 states and 24989 transitions. [2021-11-22 15:05:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:05:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:05:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:04,079 INFO L225 Difference]: With dead ends: 16735 [2021-11-22 15:05:04,079 INFO L226 Difference]: Without dead ends: 13026 [2021-11-22 15:05:04,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:05:04,087 INFO L933 BasicCegarLoop]: 8941 mSDtfsCounter, 9752 mSDsluCounter, 24736 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9752 SdHoareTripleChecker+Valid, 33677 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:04,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9752 Valid, 33677 Invalid, 302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:05:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13026 states. [2021-11-22 15:05:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13026 to 5980. [2021-11-22 15:05:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 5978 states have (on average 1.5848109735697558) internal successors, (9474), 5979 states have internal predecessors, (9474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 9474 transitions. [2021-11-22 15:05:04,557 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 9474 transitions. Word has length 176 [2021-11-22 15:05:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:04,558 INFO L470 AbstractCegarLoop]: Abstraction has 5980 states and 9474 transitions. [2021-11-22 15:05:04,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 9474 transitions. [2021-11-22 15:05:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-22 15:05:04,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:04,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:04,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:05:04,560 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash -674150694, now seen corresponding path program 1 times [2021-11-22 15:05:04,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:04,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279790710] [2021-11-22 15:05:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:04,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:05:04,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:04,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279790710] [2021-11-22 15:05:04,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279790710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:04,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:04,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:05:04,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878181956] [2021-11-22 15:05:04,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:04,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:05:04,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:05:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:05:04,609 INFO L87 Difference]: Start difference. First operand 5980 states and 9474 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:05,973 INFO L93 Difference]: Finished difference Result 16731 states and 24805 transitions. [2021-11-22 15:05:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:05:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-22 15:05:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:05,991 INFO L225 Difference]: With dead ends: 16731 [2021-11-22 15:05:05,991 INFO L226 Difference]: Without dead ends: 12921 [2021-11-22 15:05:05,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:05,997 INFO L933 BasicCegarLoop]: 7013 mSDtfsCounter, 15730 mSDsluCounter, 6971 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15730 SdHoareTripleChecker+Valid, 13984 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:05,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15730 Valid, 13984 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:05:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12921 states. [2021-11-22 15:05:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12921 to 12535. [2021-11-22 15:05:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12535 states, 12533 states have (on average 1.4942152716827575) internal successors, (18727), 12534 states have internal predecessors, (18727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12535 states to 12535 states and 18727 transitions. [2021-11-22 15:05:07,069 INFO L78 Accepts]: Start accepts. Automaton has 12535 states and 18727 transitions. Word has length 176 [2021-11-22 15:05:07,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:07,070 INFO L470 AbstractCegarLoop]: Abstraction has 12535 states and 18727 transitions. [2021-11-22 15:05:07,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 12535 states and 18727 transitions. [2021-11-22 15:05:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 15:05:07,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:07,073 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:07,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:05:07,073 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1485228300, now seen corresponding path program 1 times [2021-11-22 15:05:07,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:07,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889939447] [2021-11-22 15:05:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:07,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:05:07,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:07,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889939447] [2021-11-22 15:05:07,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889939447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:07,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:07,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:05:07,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610686581] [2021-11-22 15:05:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:07,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:05:07,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:05:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:07,130 INFO L87 Difference]: Start difference. First operand 12535 states and 18727 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:09,128 INFO L93 Difference]: Finished difference Result 29663 states and 43099 transitions. [2021-11-22 15:05:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:05:09,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-22 15:05:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:09,149 INFO L225 Difference]: With dead ends: 29663 [2021-11-22 15:05:09,149 INFO L226 Difference]: Without dead ends: 19308 [2021-11-22 15:05:09,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:05:09,162 INFO L933 BasicCegarLoop]: 7060 mSDtfsCounter, 10155 mSDsluCounter, 24038 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10155 SdHoareTripleChecker+Valid, 31098 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:09,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10155 Valid, 31098 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:05:09,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19308 states. [2021-11-22 15:05:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19308 to 12628. [2021-11-22 15:05:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12628 states, 12626 states have (on average 1.4860605100586093) internal successors, (18763), 12627 states have internal predecessors, (18763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12628 states to 12628 states and 18763 transitions. [2021-11-22 15:05:10,389 INFO L78 Accepts]: Start accepts. Automaton has 12628 states and 18763 transitions. Word has length 201 [2021-11-22 15:05:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:10,389 INFO L470 AbstractCegarLoop]: Abstraction has 12628 states and 18763 transitions. [2021-11-22 15:05:10,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:10,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12628 states and 18763 transitions. [2021-11-22 15:05:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 15:05:10,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:10,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:10,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:05:10,393 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 944798794, now seen corresponding path program 1 times [2021-11-22 15:05:10,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:10,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891071186] [2021-11-22 15:05:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:10,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:05:10,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:10,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891071186] [2021-11-22 15:05:10,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891071186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:10,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:10,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:05:10,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272789142] [2021-11-22 15:05:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:10,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:05:10,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:05:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:10,443 INFO L87 Difference]: Start difference. First operand 12628 states and 18763 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:12,023 INFO L93 Difference]: Finished difference Result 24779 states and 35808 transitions. [2021-11-22 15:05:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:05:12,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-22 15:05:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:12,039 INFO L225 Difference]: With dead ends: 24779 [2021-11-22 15:05:12,039 INFO L226 Difference]: Without dead ends: 14338 [2021-11-22 15:05:12,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:05:12,046 INFO L933 BasicCegarLoop]: 6793 mSDtfsCounter, 8136 mSDsluCounter, 14218 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8136 SdHoareTripleChecker+Valid, 21011 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:12,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8136 Valid, 21011 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:05:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14338 states. [2021-11-22 15:05:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14338 to 12634. [2021-11-22 15:05:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12634 states, 12632 states have (on average 1.4790215326155796) internal successors, (18683), 12633 states have internal predecessors, (18683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12634 states to 12634 states and 18683 transitions. [2021-11-22 15:05:13,174 INFO L78 Accepts]: Start accepts. Automaton has 12634 states and 18683 transitions. Word has length 201 [2021-11-22 15:05:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:13,175 INFO L470 AbstractCegarLoop]: Abstraction has 12634 states and 18683 transitions. [2021-11-22 15:05:13,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12634 states and 18683 transitions. [2021-11-22 15:05:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 15:05:13,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:13,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:13,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:05:13,179 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1362687496, now seen corresponding path program 1 times [2021-11-22 15:05:13,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:13,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273407118] [2021-11-22 15:05:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:13,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:05:13,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:13,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273407118] [2021-11-22 15:05:13,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273407118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:13,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:13,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:05:13,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446108591] [2021-11-22 15:05:13,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:13,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:05:13,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:05:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:05:13,226 INFO L87 Difference]: Start difference. First operand 12634 states and 18683 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:15,493 INFO L93 Difference]: Finished difference Result 32712 states and 46787 transitions. [2021-11-22 15:05:15,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:05:15,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-22 15:05:15,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:15,622 INFO L225 Difference]: With dead ends: 32712 [2021-11-22 15:05:15,623 INFO L226 Difference]: Without dead ends: 22274 [2021-11-22 15:05:15,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:05:15,630 INFO L933 BasicCegarLoop]: 6822 mSDtfsCounter, 6580 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6580 SdHoareTripleChecker+Valid, 9425 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:15,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6580 Valid, 9425 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:05:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22274 states. [2021-11-22 15:05:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22274 to 22260. [2021-11-22 15:05:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22260 states, 22258 states have (on average 1.4402462036121844) internal successors, (32057), 22259 states have internal predecessors, (32057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22260 states to 22260 states and 32057 transitions. [2021-11-22 15:05:18,151 INFO L78 Accepts]: Start accepts. Automaton has 22260 states and 32057 transitions. Word has length 201 [2021-11-22 15:05:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:18,151 INFO L470 AbstractCegarLoop]: Abstraction has 22260 states and 32057 transitions. [2021-11-22 15:05:18,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 22260 states and 32057 transitions. [2021-11-22 15:05:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 15:05:18,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:18,157 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:18,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:05:18,157 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1987530073, now seen corresponding path program 1 times [2021-11-22 15:05:18,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:18,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4438498] [2021-11-22 15:05:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:18,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:05:18,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:18,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4438498] [2021-11-22 15:05:18,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4438498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:18,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:18,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:05:18,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938956982] [2021-11-22 15:05:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:18,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:05:18,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:05:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:18,219 INFO L87 Difference]: Start difference. First operand 22260 states and 32057 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:22,485 INFO L93 Difference]: Finished difference Result 59583 states and 84537 transitions. [2021-11-22 15:05:22,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:05:22,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-22 15:05:22,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:22,532 INFO L225 Difference]: With dead ends: 59583 [2021-11-22 15:05:22,532 INFO L226 Difference]: Without dead ends: 39523 [2021-11-22 15:05:22,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:05:22,549 INFO L933 BasicCegarLoop]: 6976 mSDtfsCounter, 9138 mSDsluCounter, 22991 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9138 SdHoareTripleChecker+Valid, 29967 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:22,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9138 Valid, 29967 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:05:22,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39523 states. [2021-11-22 15:05:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39523 to 22521. [2021-11-22 15:05:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22521 states, 22519 states have (on average 1.4315022869576801) internal successors, (32236), 22520 states have internal predecessors, (32236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22521 states to 22521 states and 32236 transitions. [2021-11-22 15:05:25,408 INFO L78 Accepts]: Start accepts. Automaton has 22521 states and 32236 transitions. Word has length 201 [2021-11-22 15:05:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:25,408 INFO L470 AbstractCegarLoop]: Abstraction has 22521 states and 32236 transitions. [2021-11-22 15:05:25,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22521 states and 32236 transitions. [2021-11-22 15:05:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 15:05:25,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:25,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:25,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:05:25,412 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1040492187, now seen corresponding path program 1 times [2021-11-22 15:05:25,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:25,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487404039] [2021-11-22 15:05:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:25,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:05:25,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:25,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487404039] [2021-11-22 15:05:25,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487404039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:25,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:25,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:05:25,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116802778] [2021-11-22 15:05:25,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:25,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:05:25,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:05:25,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:25,469 INFO L87 Difference]: Start difference. First operand 22521 states and 32236 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:32,189 INFO L93 Difference]: Finished difference Result 75510 states and 106482 transitions. [2021-11-22 15:05:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:05:32,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-22 15:05:32,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:32,258 INFO L225 Difference]: With dead ends: 75510 [2021-11-22 15:05:32,258 INFO L226 Difference]: Without dead ends: 55196 [2021-11-22 15:05:32,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:05:32,279 INFO L933 BasicCegarLoop]: 8582 mSDtfsCounter, 8147 mSDsluCounter, 23763 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8147 SdHoareTripleChecker+Valid, 32345 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:32,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8147 Valid, 32345 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:05:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55196 states. [2021-11-22 15:05:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55196 to 23028. [2021-11-22 15:05:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23028 states, 23026 states have (on average 1.4220012160166768) internal successors, (32743), 23027 states have internal predecessors, (32743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23028 states to 23028 states and 32743 transitions. [2021-11-22 15:05:36,068 INFO L78 Accepts]: Start accepts. Automaton has 23028 states and 32743 transitions. Word has length 201 [2021-11-22 15:05:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:36,068 INFO L470 AbstractCegarLoop]: Abstraction has 23028 states and 32743 transitions. [2021-11-22 15:05:36,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 23028 states and 32743 transitions. [2021-11-22 15:05:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-22 15:05:36,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:36,071 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:05:36,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:05:36,071 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:05:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1411999395, now seen corresponding path program 1 times [2021-11-22 15:05:36,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:05:36,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038942339] [2021-11-22 15:05:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:36,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:05:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:05:36,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:05:36,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038942339] [2021-11-22 15:05:36,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038942339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:05:36,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:05:36,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:05:36,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309330400] [2021-11-22 15:05:36,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:05:36,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:05:36,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:05:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:05:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:05:36,147 INFO L87 Difference]: Start difference. First operand 23028 states and 32743 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:44,994 INFO L93 Difference]: Finished difference Result 82637 states and 114698 transitions. [2021-11-22 15:05:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:05:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-22 15:05:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:45,083 INFO L225 Difference]: With dead ends: 82637 [2021-11-22 15:05:45,083 INFO L226 Difference]: Without dead ends: 61821 [2021-11-22 15:05:45,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:05:45,110 INFO L933 BasicCegarLoop]: 6863 mSDtfsCounter, 15593 mSDsluCounter, 7171 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15593 SdHoareTripleChecker+Valid, 14034 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:45,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15593 Valid, 14034 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:05:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61821 states.