./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a --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 af34cca1265ebda4ef436604d1992244d07816396f61d2a729ccbfca2d3a784e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:49:11,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:49:11,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:49:11,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:49:11,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:49:11,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:49:11,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:49:11,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:49:11,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:49:11,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:49:11,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:49:11,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:49:11,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:49:11,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:49:11,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:49:11,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:49:11,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:49:11,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:49:11,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:49:11,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:49:11,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:49:11,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:49:11,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:49:11,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:49:11,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:49:11,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:49:11,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:49:11,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:49:11,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:49:11,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:49:11,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:49:11,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:49:11,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:49:11,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:49:11,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:49:11,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:49:11,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:49:11,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:49:11,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:49:11,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:49:11,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:49:11,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:49:11,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:49:11,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:49:11,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:49:11,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:49:11,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:49:11,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:49:11,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:49:11,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:49:11,389 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:49:11,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:49:11,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:49:11,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:49:11,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:49:11,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:49:11,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:49:11,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:49:11,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:49:11,391 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:49:11,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:49:11,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:49:11,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:49:11,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:49:11,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:49:11,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:49:11,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:49:11,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:49:11,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:49:11,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:49:11,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:49:11,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:49:11,393 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:49:11,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:49:11,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:49:11,394 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_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af34cca1265ebda4ef436604d1992244d07816396f61d2a729ccbfca2d3a784e [2022-11-21 13:49:11,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:49:11,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:49:11,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:49:11,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:49:11,649 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:49:11,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem12_label10.c [2022-11-21 13:49:14,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:49:15,403 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:49:15,404 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/sv-benchmarks/c/eca-rers2012/Problem12_label10.c [2022-11-21 13:49:15,437 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/data/c80232e88/23535146679a480896ed3c999e281ba4/FLAGebe9a5e98 [2022-11-21 13:49:15,461 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/data/c80232e88/23535146679a480896ed3c999e281ba4 [2022-11-21 13:49:15,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:49:15,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:49:15,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:49:15,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:49:15,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:49:15,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:15" (1/1) ... [2022-11-21 13:49:15,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f48e454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:15, skipping insertion in model container [2022-11-21 13:49:15,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:15" (1/1) ... [2022-11-21 13:49:15,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:49:15,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:49:15,877 WARN L237 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_78593f97-1cf6-4adb-8468-2b104524c9a9/sv-benchmarks/c/eca-rers2012/Problem12_label10.c[3658,3671] [2022-11-21 13:49:16,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:49:16,837 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:49:16,867 WARN L237 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_78593f97-1cf6-4adb-8468-2b104524c9a9/sv-benchmarks/c/eca-rers2012/Problem12_label10.c[3658,3671] [2022-11-21 13:49:17,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:49:17,438 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:49:17,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17 WrapperNode [2022-11-21 13:49:17,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:49:17,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:49:17,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:49:17,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:49:17,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:17,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:17,810 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-21 13:49:17,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:49:17,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:49:17,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:49:17,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:49:17,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:17,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:17,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:17,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:18,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:18,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:18,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:18,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:18,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:49:18,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:49:18,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:49:18,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:49:18,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (1/1) ... [2022-11-21 13:49:18,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:49:18,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:49:18,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:49:18,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:49:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:49:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:49:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:49:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:49:18,424 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:49:18,427 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:49:23,510 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:49:23,537 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:49:23,537 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:49:23,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:23 BoogieIcfgContainer [2022-11-21 13:49:23,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:49:23,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:49:23,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:49:23,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:49:23,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:15" (1/3) ... [2022-11-21 13:49:23,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae50558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:23, skipping insertion in model container [2022-11-21 13:49:23,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:17" (2/3) ... [2022-11-21 13:49:23,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae50558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:23, skipping insertion in model container [2022-11-21 13:49:23,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:23" (3/3) ... [2022-11-21 13:49:23,551 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label10.c [2022-11-21 13:49:23,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:49:23,571 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:49:23,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:49:23,665 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f2499fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:49:23,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:49:23,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-21 13:49:23,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:23,681 INFO L195 NwaCegarLoop]: 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] [2022-11-21 13:49:23,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2022-11-21 13:49:23,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:23,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073002374] [2022-11-21 13:49:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:23,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:23,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:23,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073002374] [2022-11-21 13:49:23,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073002374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:23,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:23,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:49:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181909010] [2022-11-21 13:49:24,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:24,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:24,052 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:28,968 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-11-21 13:49:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:28,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-21 13:49:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:28,995 INFO L225 Difference]: With dead ends: 2388 [2022-11-21 13:49:28,996 INFO L226 Difference]: Without dead ends: 1506 [2022-11-21 13:49:29,001 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:49:29,005 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 870 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:29,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 13:49:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-21 13:49:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-21 13:49:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2022-11-21 13:49:29,112 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 27 [2022-11-21 13:49:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:29,113 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2022-11-21 13:49:29,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2022-11-21 13:49:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 13:49:29,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:29,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:29,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:49:29,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1051202546, now seen corresponding path program 1 times [2022-11-21 13:49:29,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:29,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274145655] [2022-11-21 13:49:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:29,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:29,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274145655] [2022-11-21 13:49:29,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274145655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:29,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:29,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:49:29,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852055511] [2022-11-21 13:49:29,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:29,397 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:33,521 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2022-11-21 13:49:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-11-21 13:49:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:33,531 INFO L225 Difference]: With dead ends: 3761 [2022-11-21 13:49:33,531 INFO L226 Difference]: Without dead ends: 2257 [2022-11-21 13:49:33,533 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:49:33,535 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:33,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 13:49:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-21 13:49:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-11-21 13:49:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2022-11-21 13:49:33,583 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 96 [2022-11-21 13:49:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:33,583 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2022-11-21 13:49:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2022-11-21 13:49:33,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-21 13:49:33,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:33,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:33,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:49:33,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:33,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:33,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2087433101, now seen corresponding path program 1 times [2022-11-21 13:49:33,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:33,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485661509] [2022-11-21 13:49:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:33,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:33,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485661509] [2022-11-21 13:49:33,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485661509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:33,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:33,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844990263] [2022-11-21 13:49:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:33,714 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:38,340 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2022-11-21 13:49:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:38,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-21 13:49:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:38,360 INFO L225 Difference]: With dead ends: 6765 [2022-11-21 13:49:38,360 INFO L226 Difference]: Without dead ends: 4510 [2022-11-21 13:49:38,368 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:49:38,369 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 729 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:38,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1378 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 13:49:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-11-21 13:49:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-11-21 13:49:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.3714792636948325) internal successors, (6184), 4509 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 6184 transitions. [2022-11-21 13:49:38,459 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 6184 transitions. Word has length 98 [2022-11-21 13:49:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:38,460 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 6184 transitions. [2022-11-21 13:49:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 6184 transitions. [2022-11-21 13:49:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-21 13:49:38,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:38,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:38,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:49:38,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash -271321694, now seen corresponding path program 1 times [2022-11-21 13:49:38,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:38,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955081570] [2022-11-21 13:49:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:38,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955081570] [2022-11-21 13:49:38,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955081570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:38,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:38,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474303789] [2022-11-21 13:49:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:38,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:49:38,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:49:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:49:38,874 INFO L87 Difference]: Start difference. First operand 4510 states and 6184 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:45,057 INFO L93 Difference]: Finished difference Result 9769 states and 13273 transitions. [2022-11-21 13:49:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:49:45,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-11-21 13:49:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:45,075 INFO L225 Difference]: With dead ends: 9769 [2022-11-21 13:49:45,075 INFO L226 Difference]: Without dead ends: 5261 [2022-11-21 13:49:45,079 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:49:45,080 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 2182 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 5487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:45,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 240 Invalid, 5487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-21 13:49:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2022-11-21 13:49:45,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2022-11-21 13:49:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.2979087452471483) internal successors, (6827), 5260 states have internal predecessors, (6827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6827 transitions. [2022-11-21 13:49:45,178 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6827 transitions. Word has length 104 [2022-11-21 13:49:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:45,179 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 6827 transitions. [2022-11-21 13:49:45,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6827 transitions. [2022-11-21 13:49:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-21 13:49:45,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:45,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:45,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:49:45,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:45,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -882153392, now seen corresponding path program 1 times [2022-11-21 13:49:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:45,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263204710] [2022-11-21 13:49:45,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:45,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263204710] [2022-11-21 13:49:45,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263204710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:45,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:45,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:45,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042513530] [2022-11-21 13:49:45,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:45,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:49:45,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:49:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:49:45,653 INFO L87 Difference]: Start difference. First operand 5261 states and 6827 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:50,773 INFO L93 Difference]: Finished difference Result 12810 states and 17221 transitions. [2022-11-21 13:49:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:49:50,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-11-21 13:49:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:50,798 INFO L225 Difference]: With dead ends: 12810 [2022-11-21 13:49:50,798 INFO L226 Difference]: Without dead ends: 8265 [2022-11-21 13:49:50,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:49:50,804 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3680 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 3680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:50,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 616 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 3680 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-21 13:49:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2022-11-21 13:49:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 7514. [2022-11-21 13:49:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.213097298016771) internal successors, (9114), 7513 states have internal predecessors, (9114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 9114 transitions. [2022-11-21 13:49:50,942 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 9114 transitions. Word has length 175 [2022-11-21 13:49:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:50,943 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 9114 transitions. [2022-11-21 13:49:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 9114 transitions. [2022-11-21 13:49:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-21 13:49:50,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:50,946 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:50,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:49:50,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -52205525, now seen corresponding path program 1 times [2022-11-21 13:49:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:50,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360311655] [2022-11-21 13:49:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:50,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-21 13:49:51,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:51,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360311655] [2022-11-21 13:49:51,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360311655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:51,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:51,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:49:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708981483] [2022-11-21 13:49:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:51,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:51,246 INFO L87 Difference]: Start difference. First operand 7514 states and 9114 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:55,083 INFO L93 Difference]: Finished difference Result 18783 states and 23429 transitions. [2022-11-21 13:49:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:49:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 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 249 [2022-11-21 13:49:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:55,120 INFO L225 Difference]: With dead ends: 18783 [2022-11-21 13:49:55,121 INFO L226 Difference]: Without dead ends: 12022 [2022-11-21 13:49:55,127 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:49:55,127 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:55,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 13:49:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12022 states. [2022-11-21 13:49:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12022 to 11269. [2022-11-21 13:49:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.1975505857294995) internal successors, (13494), 11268 states have internal predecessors, (13494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13494 transitions. [2022-11-21 13:49:55,334 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13494 transitions. Word has length 249 [2022-11-21 13:49:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:55,335 INFO L495 AbstractCegarLoop]: Abstraction has 11269 states and 13494 transitions. [2022-11-21 13:49:55,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13494 transitions. [2022-11-21 13:49:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-21 13:49:55,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:55,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:49:55,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:55,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -769657463, now seen corresponding path program 1 times [2022-11-21 13:49:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:55,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180544803] [2022-11-21 13:49:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 13:49:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:56,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180544803] [2022-11-21 13:49:56,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180544803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:56,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:56,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:49:56,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380328088] [2022-11-21 13:49:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:49:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:49:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:49:56,786 INFO L87 Difference]: Start difference. First operand 11269 states and 13494 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:00,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:00,727 INFO L93 Difference]: Finished difference Result 26291 states and 32289 transitions. [2022-11-21 13:50:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 316 [2022-11-21 13:50:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:00,758 INFO L225 Difference]: With dead ends: 26291 [2022-11-21 13:50:00,758 INFO L226 Difference]: Without dead ends: 15775 [2022-11-21 13:50:00,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:00,767 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 829 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:00,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 142 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 13:50:00,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2022-11-21 13:50:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 15775. [2022-11-21 13:50:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2147838214783822) internal successors, (19162), 15774 states have internal predecessors, (19162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19162 transitions. [2022-11-21 13:50:01,037 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19162 transitions. Word has length 316 [2022-11-21 13:50:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:01,038 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 19162 transitions. [2022-11-21 13:50:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19162 transitions. [2022-11-21 13:50:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-21 13:50:01,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:01,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:01,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:50:01,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2137202274, now seen corresponding path program 1 times [2022-11-21 13:50:01,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:01,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768790214] [2022-11-21 13:50:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 74 proven. 108 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-21 13:50:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768790214] [2022-11-21 13:50:01,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768790214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:01,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126504879] [2022-11-21 13:50:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:01,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:01,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:01,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:50:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:50:01,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 13:50:02,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:50:02,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126504879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:02,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:50:02,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-21 13:50:02,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069019258] [2022-11-21 13:50:02,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:02,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:02,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:50:02,203 INFO L87 Difference]: Start difference. First operand 15775 states and 19162 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:06,002 INFO L93 Difference]: Finished difference Result 34552 states and 42441 transitions. [2022-11-21 13:50:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:06,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 345 [2022-11-21 13:50:06,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:06,056 INFO L225 Difference]: With dead ends: 34552 [2022-11-21 13:50:06,056 INFO L226 Difference]: Without dead ends: 19530 [2022-11-21 13:50:06,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:50:06,072 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 763 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:06,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 238 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 13:50:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2022-11-21 13:50:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 19530. [2022-11-21 13:50:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19530 states, 19529 states have (on average 1.2128629218085925) internal successors, (23686), 19529 states have internal predecessors, (23686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19530 states to 19530 states and 23686 transitions. [2022-11-21 13:50:06,544 INFO L78 Accepts]: Start accepts. Automaton has 19530 states and 23686 transitions. Word has length 345 [2022-11-21 13:50:06,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:06,545 INFO L495 AbstractCegarLoop]: Abstraction has 19530 states and 23686 transitions. [2022-11-21 13:50:06,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 19530 states and 23686 transitions. [2022-11-21 13:50:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-21 13:50:06,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:06,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:06,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:50:06,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:06,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1315212118, now seen corresponding path program 1 times [2022-11-21 13:50:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:06,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763708059] [2022-11-21 13:50:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 13:50:07,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:07,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763708059] [2022-11-21 13:50:07,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763708059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:07,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:07,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:07,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352230289] [2022-11-21 13:50:07,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:07,135 INFO L87 Difference]: Start difference. First operand 19530 states and 23686 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:11,671 INFO L93 Difference]: Finished difference Result 48070 states and 58712 transitions. [2022-11-21 13:50:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2022-11-21 13:50:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:11,730 INFO L225 Difference]: With dead ends: 48070 [2022-11-21 13:50:11,731 INFO L226 Difference]: Without dead ends: 29293 [2022-11-21 13:50:11,749 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:11,750 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 636 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:11,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1246 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 13:50:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2022-11-21 13:50:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 28542. [2022-11-21 13:50:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28542 states, 28541 states have (on average 1.2074559405767142) internal successors, (34462), 28541 states have internal predecessors, (34462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28542 states to 28542 states and 34462 transitions. [2022-11-21 13:50:12,183 INFO L78 Accepts]: Start accepts. Automaton has 28542 states and 34462 transitions. Word has length 354 [2022-11-21 13:50:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:12,184 INFO L495 AbstractCegarLoop]: Abstraction has 28542 states and 34462 transitions. [2022-11-21 13:50:12,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 28542 states and 34462 transitions. [2022-11-21 13:50:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-21 13:50:12,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:12,192 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:12,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:50:12,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash -959516428, now seen corresponding path program 1 times [2022-11-21 13:50:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667838161] [2022-11-21 13:50:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:12,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-21 13:50:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667838161] [2022-11-21 13:50:12,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667838161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:12,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:12,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862117983] [2022-11-21 13:50:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:12,484 INFO L87 Difference]: Start difference. First operand 28542 states and 34462 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:16,556 INFO L93 Difference]: Finished difference Result 57082 states and 68925 transitions. [2022-11-21 13:50:16,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:16,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 358 [2022-11-21 13:50:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:16,595 INFO L225 Difference]: With dead ends: 57082 [2022-11-21 13:50:16,595 INFO L226 Difference]: Without dead ends: 29293 [2022-11-21 13:50:16,613 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:16,613 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 752 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:16,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 367 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 13:50:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2022-11-21 13:50:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 27791. [2022-11-21 13:50:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27791 states, 27790 states have (on average 1.1928031666066932) internal successors, (33148), 27790 states have internal predecessors, (33148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27791 states to 27791 states and 33148 transitions. [2022-11-21 13:50:17,309 INFO L78 Accepts]: Start accepts. Automaton has 27791 states and 33148 transitions. Word has length 358 [2022-11-21 13:50:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:17,310 INFO L495 AbstractCegarLoop]: Abstraction has 27791 states and 33148 transitions. [2022-11-21 13:50:17,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand 27791 states and 33148 transitions. [2022-11-21 13:50:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-21 13:50:17,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:17,320 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 13:50:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:50:17,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1863064843, now seen corresponding path program 1 times [2022-11-21 13:50:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:17,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815898565] [2022-11-21 13:50:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-21 13:50:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:17,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815898565] [2022-11-21 13:50:17,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815898565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:17,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:17,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404717389] [2022-11-21 13:50:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:17,772 INFO L87 Difference]: Start difference. First operand 27791 states and 33148 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:22,078 INFO L93 Difference]: Finished difference Result 75857 states and 91606 transitions. [2022-11-21 13:50:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:22,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 413 [2022-11-21 13:50:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:22,143 INFO L225 Difference]: With dead ends: 75857 [2022-11-21 13:50:22,144 INFO L226 Difference]: Without dead ends: 48819 [2022-11-21 13:50:22,167 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:22,168 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 703 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:22,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 529 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 13:50:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48819 states. [2022-11-21 13:50:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48819 to 47317. [2022-11-21 13:50:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47317 states, 47316 states have (on average 1.1756910981486177) internal successors, (55629), 47316 states have internal predecessors, (55629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47317 states to 47317 states and 55629 transitions. [2022-11-21 13:50:23,102 INFO L78 Accepts]: Start accepts. Automaton has 47317 states and 55629 transitions. Word has length 413 [2022-11-21 13:50:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:23,103 INFO L495 AbstractCegarLoop]: Abstraction has 47317 states and 55629 transitions. [2022-11-21 13:50:23,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 47317 states and 55629 transitions. [2022-11-21 13:50:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-11-21 13:50:23,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:23,119 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:23,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:50:23,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 932015733, now seen corresponding path program 1 times [2022-11-21 13:50:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:23,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874159077] [2022-11-21 13:50:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-21 13:50:23,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:23,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874159077] [2022-11-21 13:50:23,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874159077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:23,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:23,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:23,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216207751] [2022-11-21 13:50:23,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:23,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:23,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:23,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:23,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:23,806 INFO L87 Difference]: Start difference. First operand 47317 states and 55629 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:28,114 INFO L93 Difference]: Finished difference Result 134435 states and 158813 transitions. [2022-11-21 13:50:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:28,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 512 [2022-11-21 13:50:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:28,212 INFO L225 Difference]: With dead ends: 134435 [2022-11-21 13:50:28,212 INFO L226 Difference]: Without dead ends: 87871 [2022-11-21 13:50:28,245 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:28,245 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 560 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:28,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1262 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 13:50:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87871 states. [2022-11-21 13:50:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87871 to 84116. [2022-11-21 13:50:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.131736313380491) internal successors, (95196), 84115 states have internal predecessors, (95196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 95196 transitions. [2022-11-21 13:50:29,473 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 95196 transitions. Word has length 512 [2022-11-21 13:50:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:29,474 INFO L495 AbstractCegarLoop]: Abstraction has 84116 states and 95196 transitions. [2022-11-21 13:50:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 95196 transitions. [2022-11-21 13:50:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-21 13:50:29,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:29,497 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:29,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:50:29,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:29,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1498649070, now seen corresponding path program 1 times [2022-11-21 13:50:29,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:29,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402434487] [2022-11-21 13:50:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:29,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-11-21 13:50:30,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:30,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402434487] [2022-11-21 13:50:30,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402434487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:30,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:30,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:30,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042526741] [2022-11-21 13:50:30,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:30,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:30,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:30,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:30,291 INFO L87 Difference]: Start difference. First operand 84116 states and 95196 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:34,536 INFO L93 Difference]: Finished difference Result 186254 states and 210762 transitions. [2022-11-21 13:50:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:34,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 513 [2022-11-21 13:50:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:34,845 INFO L225 Difference]: With dead ends: 186254 [2022-11-21 13:50:34,845 INFO L226 Difference]: Without dead ends: 102891 [2022-11-21 13:50:34,870 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:34,871 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 847 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:34,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1117 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-21 13:50:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102891 states. [2022-11-21 13:50:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102891 to 102891. [2022-11-21 13:50:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.118825930605501) internal successors, (115116), 102890 states have internal predecessors, (115116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 115116 transitions. [2022-11-21 13:50:36,399 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 115116 transitions. Word has length 513 [2022-11-21 13:50:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:36,400 INFO L495 AbstractCegarLoop]: Abstraction has 102891 states and 115116 transitions. [2022-11-21 13:50:36,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 115116 transitions. [2022-11-21 13:50:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-21 13:50:36,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:36,422 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:36,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:50:36,423 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash 112580126, now seen corresponding path program 1 times [2022-11-21 13:50:36,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:36,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413536260] [2022-11-21 13:50:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:36,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-21 13:50:37,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:37,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413536260] [2022-11-21 13:50:37,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413536260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:37,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:37,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962627447] [2022-11-21 13:50:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:37,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:37,119 INFO L87 Difference]: Start difference. First operand 102891 states and 115116 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:41,788 INFO L93 Difference]: Finished difference Result 248587 states and 280527 transitions. [2022-11-21 13:50:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 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 569 [2022-11-21 13:50:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:41,947 INFO L225 Difference]: With dead ends: 248587 [2022-11-21 13:50:41,947 INFO L226 Difference]: Without dead ends: 141192 [2022-11-21 13:50:41,993 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:41,994 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 585 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:41,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1300 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 13:50:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141192 states. [2022-11-21 13:50:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141192 to 138939. [2022-11-21 13:50:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138939 states, 138938 states have (on average 1.1025349436439276) internal successors, (153184), 138938 states have internal predecessors, (153184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138939 states to 138939 states and 153184 transitions. [2022-11-21 13:50:44,074 INFO L78 Accepts]: Start accepts. Automaton has 138939 states and 153184 transitions. Word has length 569 [2022-11-21 13:50:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:44,074 INFO L495 AbstractCegarLoop]: Abstraction has 138939 states and 153184 transitions. [2022-11-21 13:50:44,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 138939 states and 153184 transitions. [2022-11-21 13:50:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-11-21 13:50:44,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:44,104 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:44,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:50:44,105 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1411609590, now seen corresponding path program 1 times [2022-11-21 13:50:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849399926] [2022-11-21 13:50:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 636 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-21 13:50:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849399926] [2022-11-21 13:50:44,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849399926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:44,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:44,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597902650] [2022-11-21 13:50:44,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:44,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:44,485 INFO L87 Difference]: Start difference. First operand 138939 states and 153184 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:49,824 INFO L93 Difference]: Finished difference Result 317679 states and 350381 transitions. [2022-11-21 13:50:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:49,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 651 [2022-11-21 13:50:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:50,013 INFO L225 Difference]: With dead ends: 317679 [2022-11-21 13:50:50,013 INFO L226 Difference]: Without dead ends: 179493 [2022-11-21 13:50:50,063 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:50,064 INFO L413 NwaCegarLoop]: 1278 mSDtfsCounter, 664 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:50,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1285 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 13:50:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179493 states. [2022-11-21 13:50:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179493 to 174236. [2022-11-21 13:50:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174236 states, 174235 states have (on average 1.0865153384796395) internal successors, (189309), 174235 states have internal predecessors, (189309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174236 states to 174236 states and 189309 transitions. [2022-11-21 13:50:52,767 INFO L78 Accepts]: Start accepts. Automaton has 174236 states and 189309 transitions. Word has length 651 [2022-11-21 13:50:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:52,768 INFO L495 AbstractCegarLoop]: Abstraction has 174236 states and 189309 transitions. [2022-11-21 13:50:52,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 174236 states and 189309 transitions. [2022-11-21 13:50:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-11-21 13:50:52,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:52,795 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:52,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:50:52,795 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1505451958, now seen corresponding path program 1 times [2022-11-21 13:50:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:52,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878739886] [2022-11-21 13:50:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:52,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-21 13:50:53,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:53,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878739886] [2022-11-21 13:50:53,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878739886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:53,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:53,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:50:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645571068] [2022-11-21 13:50:53,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:53,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:53,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:53,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:50:53,888 INFO L87 Difference]: Start difference. First operand 174236 states and 189309 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:50:58,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:58,661 INFO L93 Difference]: Finished difference Result 347719 states and 377860 transitions. [2022-11-21 13:50:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:58,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 651 [2022-11-21 13:50:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:58,841 INFO L225 Difference]: With dead ends: 347719 [2022-11-21 13:50:58,841 INFO L226 Difference]: Without dead ends: 174236 [2022-11-21 13:50:58,890 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:50:58,892 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:58,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1270 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 13:50:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174236 states. [2022-11-21 13:51:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174236 to 171232. [2022-11-21 13:51:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171232 states, 171231 states have (on average 1.0682469879869883) internal successors, (182917), 171231 states have internal predecessors, (182917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171232 states to 171232 states and 182917 transitions. [2022-11-21 13:51:01,578 INFO L78 Accepts]: Start accepts. Automaton has 171232 states and 182917 transitions. Word has length 651 [2022-11-21 13:51:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:01,578 INFO L495 AbstractCegarLoop]: Abstraction has 171232 states and 182917 transitions. [2022-11-21 13:51:01,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 171232 states and 182917 transitions. [2022-11-21 13:51:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2022-11-21 13:51:01,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:01,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:51:01,607 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2099495311, now seen corresponding path program 1 times [2022-11-21 13:51:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:01,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523950124] [2022-11-21 13:51:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 339 proven. 416 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-21 13:51:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:04,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523950124] [2022-11-21 13:51:04,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523950124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:51:04,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065882212] [2022-11-21 13:51:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:04,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:51:04,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:04,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:51:04,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:51:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:04,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:51:04,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-11-21 13:51:05,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:51:05,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065882212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:05,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:51:05,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-21 13:51:05,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25850245] [2022-11-21 13:51:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:05,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:51:05,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:51:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:51:05,324 INFO L87 Difference]: Start difference. First operand 171232 states and 182917 transitions. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:09,393 INFO L93 Difference]: Finished difference Result 344715 states and 368140 transitions. [2022-11-21 13:51:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:51:09,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 709 [2022-11-21 13:51:09,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:09,582 INFO L225 Difference]: With dead ends: 344715 [2022-11-21 13:51:09,582 INFO L226 Difference]: Without dead ends: 170481 [2022-11-21 13:51:09,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:51:09,655 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 531 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:09,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1320 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 13:51:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170481 states. [2022-11-21 13:51:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170481 to 162971. [2022-11-21 13:51:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162971 states, 162970 states have (on average 1.056470516045898) internal successors, (172173), 162970 states have internal predecessors, (172173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162971 states to 162971 states and 172173 transitions. [2022-11-21 13:51:12,538 INFO L78 Accepts]: Start accepts. Automaton has 162971 states and 172173 transitions. Word has length 709 [2022-11-21 13:51:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:12,538 INFO L495 AbstractCegarLoop]: Abstraction has 162971 states and 172173 transitions. [2022-11-21 13:51:12,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 162971 states and 172173 transitions. [2022-11-21 13:51:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2022-11-21 13:51:12,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:12,574 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:12,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78593f97-1cf6-4adb-8468-2b104524c9a9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 13:51:12,782 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1445452210, now seen corresponding path program 1 times [2022-11-21 13:51:12,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:12,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106936042] [2022-11-21 13:51:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:12,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-21 13:51:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:15,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106936042] [2022-11-21 13:51:15,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106936042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:15,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:15,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:51:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211836767] [2022-11-21 13:51:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:15,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:51:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:51:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:51:15,284 INFO L87 Difference]: Start difference. First operand 162971 states and 172173 transitions. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:21,032 INFO L93 Difference]: Finished difference Result 325669 states and 344068 transitions. [2022-11-21 13:51:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:51:21,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 755 [2022-11-21 13:51:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:21,193 INFO L225 Difference]: With dead ends: 325669 [2022-11-21 13:51:21,193 INFO L226 Difference]: Without dead ends: 163451 [2022-11-21 13:51:21,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:51:21,240 INFO L413 NwaCegarLoop]: 1336 mSDtfsCounter, 1118 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 3781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:21,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1353 Invalid, 3781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 13:51:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163451 states.