./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.04.cil-1.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_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/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_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/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_0a02b649-13e0-481d-a729-34d34ebaeda6/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 d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba --- 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 17:11:57,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:11:57,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:11:57,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:11:57,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:11:57,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:11:57,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:11:57,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:11:57,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:11:57,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:11:57,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:11:57,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:11:57,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:11:57,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:11:57,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:11:57,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:11:57,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:11:57,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:11:57,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:11:57,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:11:57,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:11:57,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:11:57,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:11:57,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:11:57,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:11:57,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:11:57,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:11:57,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:11:57,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:11:57,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:11:57,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:11:57,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:11:57,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:11:57,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:11:57,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:11:57,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:11:57,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:11:57,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:11:57,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:11:57,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:11:57,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:11:57,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:11:57,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:11:57,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:11:57,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:11:57,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:11:57,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:11:57,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:11:57,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:11:57,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:11:57,283 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:11:57,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:11:57,285 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:11:57,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:11:57,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:11:57,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:11:57,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:11:57,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:11:57,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:11:57,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:11:57,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:11:57,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:11:57,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:11:57,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:11:57,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:11:57,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:11:57,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:11:57,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:11:57,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:11:57,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:11:57,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:11:57,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:11:57,293 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:11:57,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:11:57,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:11:57,294 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_0a02b649-13e0-481d-a729-34d34ebaeda6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4710f8f3a918a0191222414f5c33a367ff98c09c2e8598fa3213223c4c35dba [2022-11-21 17:11:57,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:11:57,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:11:57,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:11:57,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:11:57,716 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:11:57,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2022-11-21 17:12:01,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:12:01,610 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:12:01,611 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/sv-benchmarks/c/systemc/token_ring.04.cil-1.c [2022-11-21 17:12:01,624 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/data/a2d0d6a57/52c3f5b838d14718b89bbab12a161a97/FLAG2e654bf57 [2022-11-21 17:12:01,642 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/data/a2d0d6a57/52c3f5b838d14718b89bbab12a161a97 [2022-11-21 17:12:01,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:12:01,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:12:01,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:12:01,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:12:01,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:12:01,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:12:01" (1/1) ... [2022-11-21 17:12:01,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb5d5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:01, skipping insertion in model container [2022-11-21 17:12:01,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:12:01" (1/1) ... [2022-11-21 17:12:01,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:12:01,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:12:01,940 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_0a02b649-13e0-481d-a729-34d34ebaeda6/sv-benchmarks/c/systemc/token_ring.04.cil-1.c[671,684] [2022-11-21 17:12:02,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:12:02,118 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:12:02,139 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_0a02b649-13e0-481d-a729-34d34ebaeda6/sv-benchmarks/c/systemc/token_ring.04.cil-1.c[671,684] [2022-11-21 17:12:02,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:12:02,258 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:12:02,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02 WrapperNode [2022-11-21 17:12:02,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:12:02,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:12:02,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:12:02,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:12:02,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,350 INFO L138 Inliner]: procedures = 36, calls = 43, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 389 [2022-11-21 17:12:02,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:12:02,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:12:02,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:12:02,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:12:02,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,429 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:12:02,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:12:02,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:12:02,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:12:02,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (1/1) ... [2022-11-21 17:12:02,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:12:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:02,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:12:02,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:12:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:12:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-21 17:12:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-21 17:12:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-21 17:12:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-21 17:12:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 17:12:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 17:12:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-21 17:12:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-21 17:12:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-21 17:12:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-21 17:12:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:12:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-21 17:12:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-21 17:12:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:12:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:12:02,732 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:12:02,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:12:03,470 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:12:03,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:12:03,481 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 17:12:03,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:12:03 BoogieIcfgContainer [2022-11-21 17:12:03,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:12:03,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:12:03,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:12:03,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:12:03,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:12:01" (1/3) ... [2022-11-21 17:12:03,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98ff970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:12:03, skipping insertion in model container [2022-11-21 17:12:03,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:02" (2/3) ... [2022-11-21 17:12:03,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98ff970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:12:03, skipping insertion in model container [2022-11-21 17:12:03,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:12:03" (3/3) ... [2022-11-21 17:12:03,495 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-1.c [2022-11-21 17:12:03,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:12:03,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:12:03,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:12:03,613 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;@1836cc52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:12:03,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:12:03,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 156 states have (on average 1.608974358974359) internal successors, (251), 158 states have internal predecessors, (251), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-21 17:12:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:03,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:03,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:03,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1049812288, now seen corresponding path program 1 times [2022-11-21 17:12:03,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:03,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011334284] [2022-11-21 17:12:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:03,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:04,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:04,369 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 17:12:04,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011334284] [2022-11-21 17:12:04,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011334284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:04,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:04,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:12:04,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806087837] [2022-11-21 17:12:04,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:04,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:12:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:12:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:12:04,441 INFO L87 Difference]: Start difference. First operand has 182 states, 156 states have (on average 1.608974358974359) internal successors, (251), 158 states have internal predecessors, (251), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:05,894 INFO L93 Difference]: Finished difference Result 407 states and 650 transitions. [2022-11-21 17:12:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:12:05,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:05,923 INFO L225 Difference]: With dead ends: 407 [2022-11-21 17:12:05,924 INFO L226 Difference]: Without dead ends: 231 [2022-11-21 17:12:05,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:12:05,940 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 434 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:05,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 360 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 17:12:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-21 17:12:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 177. [2022-11-21 17:12:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 152 states have (on average 1.513157894736842) internal successors, (230), 153 states have internal predecessors, (230), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-21 17:12:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 266 transitions. [2022-11-21 17:12:06,058 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 266 transitions. Word has length 89 [2022-11-21 17:12:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:06,060 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 266 transitions. [2022-11-21 17:12:06,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 266 transitions. [2022-11-21 17:12:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:06,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:06,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:06,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:12:06,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1888845950, now seen corresponding path program 1 times [2022-11-21 17:12:06,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:06,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054164196] [2022-11-21 17:12:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:06,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:06,504 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 17:12:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:06,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054164196] [2022-11-21 17:12:06,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054164196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:06,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:06,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:12:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85570935] [2022-11-21 17:12:06,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:12:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:12:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:12:06,511 INFO L87 Difference]: Start difference. First operand 177 states and 266 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:08,338 INFO L93 Difference]: Finished difference Result 617 states and 953 transitions. [2022-11-21 17:12:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:12:08,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:08,348 INFO L225 Difference]: With dead ends: 617 [2022-11-21 17:12:08,348 INFO L226 Difference]: Without dead ends: 452 [2022-11-21 17:12:08,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:12:08,361 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 641 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:08,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 612 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:12:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-21 17:12:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 345. [2022-11-21 17:12:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 300 states have (on average 1.5266666666666666) internal successors, (458), 302 states have internal predecessors, (458), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-11-21 17:12:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2022-11-21 17:12:08,519 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 89 [2022-11-21 17:12:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:08,519 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2022-11-21 17:12:08,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2022-11-21 17:12:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:08,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:08,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:08,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:12:08,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1231461894, now seen corresponding path program 1 times [2022-11-21 17:12:08,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:08,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837726676] [2022-11-21 17:12:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,838 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 17:12:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:08,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837726676] [2022-11-21 17:12:08,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837726676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:08,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:08,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:08,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188247429] [2022-11-21 17:12:08,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:08,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:08,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:08,842 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:11,072 INFO L93 Difference]: Finished difference Result 1010 states and 1555 transitions. [2022-11-21 17:12:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:12:11,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:11,082 INFO L225 Difference]: With dead ends: 1010 [2022-11-21 17:12:11,083 INFO L226 Difference]: Without dead ends: 677 [2022-11-21 17:12:11,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:12:11,095 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 644 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:11,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1111 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 17:12:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-11-21 17:12:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 502. [2022-11-21 17:12:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 437 states have (on average 1.5194508009153318) internal successors, (664), 440 states have internal predecessors, (664), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-21 17:12:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 757 transitions. [2022-11-21 17:12:11,226 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 757 transitions. Word has length 89 [2022-11-21 17:12:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:11,228 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 757 transitions. [2022-11-21 17:12:11,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 757 transitions. [2022-11-21 17:12:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:11,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:11,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:12:11,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2118684740, now seen corresponding path program 1 times [2022-11-21 17:12:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:11,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672866271] [2022-11-21 17:12:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:11,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:11,532 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 17:12:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672866271] [2022-11-21 17:12:11,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672866271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:11,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:11,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:11,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643322596] [2022-11-21 17:12:11,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:11,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:11,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:11,545 INFO L87 Difference]: Start difference. First operand 502 states and 757 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:13,762 INFO L93 Difference]: Finished difference Result 1588 states and 2437 transitions. [2022-11-21 17:12:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:12:13,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:13,772 INFO L225 Difference]: With dead ends: 1588 [2022-11-21 17:12:13,773 INFO L226 Difference]: Without dead ends: 1098 [2022-11-21 17:12:13,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:12:13,776 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 692 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:13,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 755 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 17:12:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-21 17:12:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 817. [2022-11-21 17:12:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 712 states have (on average 1.5126404494382022) internal successors, (1077), 717 states have internal predecessors, (1077), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-11-21 17:12:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1230 transitions. [2022-11-21 17:12:13,920 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1230 transitions. Word has length 89 [2022-11-21 17:12:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:13,920 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1230 transitions. [2022-11-21 17:12:13,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1230 transitions. [2022-11-21 17:12:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:13,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:13,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:12:13,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:13,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash 207642182, now seen corresponding path program 1 times [2022-11-21 17:12:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:13,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580135402] [2022-11-21 17:12:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:13,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,188 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 17:12:14,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:14,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580135402] [2022-11-21 17:12:14,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580135402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:14,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:14,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:14,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141682795] [2022-11-21 17:12:14,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:14,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:14,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:14,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:14,193 INFO L87 Difference]: Start difference. First operand 817 states and 1230 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:16,484 INFO L93 Difference]: Finished difference Result 2703 states and 4134 transitions. [2022-11-21 17:12:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:12:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:16,501 INFO L225 Difference]: With dead ends: 2703 [2022-11-21 17:12:16,501 INFO L226 Difference]: Without dead ends: 1898 [2022-11-21 17:12:16,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:12:16,506 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 636 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:16,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1109 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 17:12:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2022-11-21 17:12:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1448. [2022-11-21 17:12:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1263 states have (on average 1.5067300079176564) internal successors, (1903), 1272 states have internal predecessors, (1903), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-11-21 17:12:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2182 transitions. [2022-11-21 17:12:16,751 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2182 transitions. Word has length 89 [2022-11-21 17:12:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:16,752 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 2182 transitions. [2022-11-21 17:12:16,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2182 transitions. [2022-11-21 17:12:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:16,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:16,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:16,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:12:16,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:16,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash 284542980, now seen corresponding path program 1 times [2022-11-21 17:12:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:16,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383201685] [2022-11-21 17:12:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:16,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:16,941 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 17:12:16,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:16,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383201685] [2022-11-21 17:12:16,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383201685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:16,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:16,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:16,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921821382] [2022-11-21 17:12:16,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:16,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:16,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:16,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:16,945 INFO L87 Difference]: Start difference. First operand 1448 states and 2182 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:19,286 INFO L93 Difference]: Finished difference Result 4932 states and 7544 transitions. [2022-11-21 17:12:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:12:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:19,309 INFO L225 Difference]: With dead ends: 4932 [2022-11-21 17:12:19,309 INFO L226 Difference]: Without dead ends: 3496 [2022-11-21 17:12:19,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:12:19,320 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 632 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:19,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1109 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 17:12:19,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2022-11-21 17:12:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2715. [2022-11-21 17:12:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2370 states have (on average 1.5025316455696203) internal successors, (3561), 2387 states have internal predecessors, (3561), 226 states have call successors, (226), 102 states have call predecessors, (226), 118 states have return successors, (323), 241 states have call predecessors, (323), 226 states have call successors, (323) [2022-11-21 17:12:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4110 transitions. [2022-11-21 17:12:19,666 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4110 transitions. Word has length 89 [2022-11-21 17:12:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:19,667 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4110 transitions. [2022-11-21 17:12:19,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4110 transitions. [2022-11-21 17:12:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:19,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:19,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:19,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:12:19,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:19,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:19,673 INFO L85 PathProgramCache]: Analyzing trace with hash -682807674, now seen corresponding path program 1 times [2022-11-21 17:12:19,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:19,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359799002] [2022-11-21 17:12:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:19,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:19,920 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 17:12:19,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:19,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359799002] [2022-11-21 17:12:19,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359799002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:19,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:19,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499724263] [2022-11-21 17:12:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:19,924 INFO L87 Difference]: Start difference. First operand 2715 states and 4110 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:23,010 INFO L93 Difference]: Finished difference Result 10429 states and 15960 transitions. [2022-11-21 17:12:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:12:23,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:23,062 INFO L225 Difference]: With dead ends: 10429 [2022-11-21 17:12:23,067 INFO L226 Difference]: Without dead ends: 7726 [2022-11-21 17:12:23,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:12:23,080 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 802 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:23,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1099 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 17:12:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7726 states. [2022-11-21 17:12:23,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7726 to 5214. [2022-11-21 17:12:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 4565 states have (on average 1.503395399780942) internal successors, (6863), 4598 states have internal predecessors, (6863), 418 states have call successors, (418), 198 states have call predecessors, (418), 230 states have return successors, (693), 449 states have call predecessors, (693), 418 states have call successors, (693) [2022-11-21 17:12:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 7974 transitions. [2022-11-21 17:12:24,009 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 7974 transitions. Word has length 89 [2022-11-21 17:12:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:24,009 INFO L495 AbstractCegarLoop]: Abstraction has 5214 states and 7974 transitions. [2022-11-21 17:12:24,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 7974 transitions. [2022-11-21 17:12:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:24,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:24,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:24,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:12:24,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:24,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1225650116, now seen corresponding path program 1 times [2022-11-21 17:12:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:24,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725697523] [2022-11-21 17:12:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:24,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:24,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:24,234 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 17:12:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:24,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725697523] [2022-11-21 17:12:24,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725697523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:24,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:24,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670106088] [2022-11-21 17:12:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:24,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:24,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:24,238 INFO L87 Difference]: Start difference. First operand 5214 states and 7974 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:28,602 INFO L93 Difference]: Finished difference Result 19854 states and 30642 transitions. [2022-11-21 17:12:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:12:28,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:28,722 INFO L225 Difference]: With dead ends: 19854 [2022-11-21 17:12:28,723 INFO L226 Difference]: Without dead ends: 14652 [2022-11-21 17:12:28,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:12:28,749 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 662 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:28,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1095 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:12:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2022-11-21 17:12:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 10033. [2022-11-21 17:12:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10033 states, 8792 states have (on average 1.5037534121929026) internal successors, (13221), 8857 states have internal predecessors, (13221), 786 states have call successors, (786), 390 states have call predecessors, (786), 454 states have return successors, (1579), 849 states have call predecessors, (1579), 786 states have call successors, (1579) [2022-11-21 17:12:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 15586 transitions. [2022-11-21 17:12:30,241 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 15586 transitions. Word has length 89 [2022-11-21 17:12:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:30,242 INFO L495 AbstractCegarLoop]: Abstraction has 10033 states and 15586 transitions. [2022-11-21 17:12:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 15586 transitions. [2022-11-21 17:12:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:30,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:30,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:30,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:12:30,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash 733023942, now seen corresponding path program 1 times [2022-11-21 17:12:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:30,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082110055] [2022-11-21 17:12:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:30,510 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 17:12:30,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082110055] [2022-11-21 17:12:30,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082110055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:30,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:30,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367604247] [2022-11-21 17:12:30,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:30,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:30,519 INFO L87 Difference]: Start difference. First operand 10033 states and 15586 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:35,439 INFO L93 Difference]: Finished difference Result 36672 states and 57504 transitions. [2022-11-21 17:12:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:12:35,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:35,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:35,582 INFO L225 Difference]: With dead ends: 36672 [2022-11-21 17:12:35,582 INFO L226 Difference]: Without dead ends: 26651 [2022-11-21 17:12:35,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:12:35,633 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 683 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:35,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1099 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:12:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26651 states. [2022-11-21 17:12:38,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26651 to 19861. [2022-11-21 17:12:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19861 states, 17468 states have (on average 1.50841538813831) internal successors, (26349), 17597 states have internal predecessors, (26349), 1490 states have call successors, (1490), 774 states have call predecessors, (1490), 902 states have return successors, (3805), 1617 states have call predecessors, (3805), 1490 states have call successors, (3805) [2022-11-21 17:12:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19861 states to 19861 states and 31644 transitions. [2022-11-21 17:12:39,031 INFO L78 Accepts]: Start accepts. Automaton has 19861 states and 31644 transitions. Word has length 89 [2022-11-21 17:12:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:39,031 INFO L495 AbstractCegarLoop]: Abstraction has 19861 states and 31644 transitions. [2022-11-21 17:12:39,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19861 states and 31644 transitions. [2022-11-21 17:12:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:39,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:39,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:39,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:12:39,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash -483129784, now seen corresponding path program 1 times [2022-11-21 17:12:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:39,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927284196] [2022-11-21 17:12:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:39,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:39,400 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 17:12:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:39,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927284196] [2022-11-21 17:12:39,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927284196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:39,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:39,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101737195] [2022-11-21 17:12:39,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:39,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:39,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:39,414 INFO L87 Difference]: Start difference. First operand 19861 states and 31644 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:47,887 INFO L93 Difference]: Finished difference Result 70566 states and 113524 transitions. [2022-11-21 17:12:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:12:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:12:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:48,318 INFO L225 Difference]: With dead ends: 70566 [2022-11-21 17:12:48,318 INFO L226 Difference]: Without dead ends: 50717 [2022-11-21 17:12:48,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:12:48,391 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 625 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:48,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1099 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 17:12:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50717 states. [2022-11-21 17:12:53,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50717 to 39450. [2022-11-21 17:12:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39450 states, 34817 states have (on average 1.512565700663469) internal successors, (52663), 35074 states have internal predecessors, (52663), 2834 states have call successors, (2834), 1542 states have call predecessors, (2834), 1798 states have return successors, (9651), 3089 states have call predecessors, (9651), 2834 states have call successors, (9651) [2022-11-21 17:12:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39450 states to 39450 states and 65148 transitions. [2022-11-21 17:12:53,371 INFO L78 Accepts]: Start accepts. Automaton has 39450 states and 65148 transitions. Word has length 89 [2022-11-21 17:12:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:53,372 INFO L495 AbstractCegarLoop]: Abstraction has 39450 states and 65148 transitions. [2022-11-21 17:12:53,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 39450 states and 65148 transitions. [2022-11-21 17:12:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:12:53,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:53,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:53,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:12:53,412 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1215097210, now seen corresponding path program 1 times [2022-11-21 17:12:53,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:53,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198527449] [2022-11-21 17:12:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:53,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:12:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:12:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:12:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:12:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,569 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 17:12:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:53,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198527449] [2022-11-21 17:12:53,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198527449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:53,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:53,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:12:53,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781741292] [2022-11-21 17:12:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:53,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:12:53,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:53,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:12:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:12:53,573 INFO L87 Difference]: Start difference. First operand 39450 states and 65148 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:13:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:04,177 INFO L93 Difference]: Finished difference Result 112207 states and 182741 transitions. [2022-11-21 17:13:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:13:04,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2022-11-21 17:13:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:04,557 INFO L225 Difference]: With dead ends: 112207 [2022-11-21 17:13:04,558 INFO L226 Difference]: Without dead ends: 72770 [2022-11-21 17:13:05,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:13:05,030 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 835 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:05,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 835 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:13:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72770 states. [2022-11-21 17:13:12,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72770 to 58973. [2022-11-21 17:13:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58973 states, 51952 states have (on average 1.500769941484447) internal successors, (77968), 52466 states have internal predecessors, (77968), 4320 states have call successors, (4320), 2316 states have call predecessors, (4320), 2700 states have return successors, (13325), 4446 states have call predecessors, (13325), 4320 states have call successors, (13325) [2022-11-21 17:13:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58973 states to 58973 states and 95613 transitions. [2022-11-21 17:13:13,006 INFO L78 Accepts]: Start accepts. Automaton has 58973 states and 95613 transitions. Word has length 89 [2022-11-21 17:13:13,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:13,007 INFO L495 AbstractCegarLoop]: Abstraction has 58973 states and 95613 transitions. [2022-11-21 17:13:13,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:13:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 58973 states and 95613 transitions. [2022-11-21 17:13:13,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 17:13:13,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:13,200 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, 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] [2022-11-21 17:13:13,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:13:13,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash 703245456, now seen corresponding path program 1 times [2022-11-21 17:13:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:13,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69320173] [2022-11-21 17:13:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 17:13:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:13:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:13:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:13:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:13:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 17:13:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 17:13:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 17:13:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:13:13,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:13,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69320173] [2022-11-21 17:13:13,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69320173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:13:13,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112491962] [2022-11-21 17:13:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:13,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:13,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:13:13,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:13:13,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a02b649-13e0-481d-a729-34d34ebaeda6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process