./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8 --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 37da121d1485cf4d7db5098d27ad9010a5336c778943ff6fd7c53fe4a9fdfbdc --- 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-e04fb08 [2022-11-16 10:55:13,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:55:13,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:55:13,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:55:13,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:55:13,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:55:13,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:55:13,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:55:13,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:55:13,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:55:13,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:55:13,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:55:13,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:55:13,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:55:13,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:55:13,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:55:13,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:55:13,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:55:13,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:55:13,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:55:13,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:55:13,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:55:13,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:55:13,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:55:13,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:55:13,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:55:13,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:55:13,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:55:13,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:55:13,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:55:13,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:55:13,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:55:13,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:55:13,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:55:13,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:55:13,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:55:13,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:55:13,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:55:13,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:55:13,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:55:13,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:55:13,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:55:13,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:55:13,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:55:13,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:55:13,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:55:13,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:55:13,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:55:13,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:55:13,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:55:13,323 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:55:13,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:55:13,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:55:13,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:55:13,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:55:13,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:55:13,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:55:13,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:55:13,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:55:13,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:55:13,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:55:13,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:55:13,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:55:13,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:55:13,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:55:13,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:55:13,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:13,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:55:13,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:55:13,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:55:13,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:55:13,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:55:13,328 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:55:13,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:55:13,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:55:13,328 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_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37da121d1485cf4d7db5098d27ad9010a5336c778943ff6fd7c53fe4a9fdfbdc [2022-11-16 10:55:13,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:55:13,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:55:13,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:55:13,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:55:13,663 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:55:13,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 10:55:13,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/data/bfa2694f3/db160b40795a4d4d906dddff2aa71e48/FLAG99c170af7 [2022-11-16 10:55:14,456 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:55:14,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 10:55:14,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/data/bfa2694f3/db160b40795a4d4d906dddff2aa71e48/FLAG99c170af7 [2022-11-16 10:55:14,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/data/bfa2694f3/db160b40795a4d4d906dddff2aa71e48 [2022-11-16 10:55:14,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:55:14,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:55:14,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:14,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:55:14,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:55:14,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:14" (1/1) ... [2022-11-16 10:55:14,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca0d70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:14, skipping insertion in model container [2022-11-16 10:55:14,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:55:14" (1/1) ... [2022-11-16 10:55:14,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:55:14,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:55:15,224 WARN L229 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_b995cd26-51b6-423d-badf-aef6fd838c4b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8458,8471] [2022-11-16 10:55:15,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:15,309 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:55:15,380 WARN L229 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_b995cd26-51b6-423d-badf-aef6fd838c4b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8458,8471] [2022-11-16 10:55:15,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:55:15,446 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:55:15,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15 WrapperNode [2022-11-16 10:55:15,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:55:15,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:15,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:55:15,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:55:15,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,516 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 790 [2022-11-16 10:55:15,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:55:15,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:55:15,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:55:15,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:55:15,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,556 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:55:15,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:55:15,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:55:15,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:55:15,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (1/1) ... [2022-11-16 10:55:15,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:55:15,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:15,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:55:15,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b995cd26-51b6-423d-badf-aef6fd838c4b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:55:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:55:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:55:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:55:15,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:55:15,861 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:55:15,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:55:16,888 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:55:16,899 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:55:16,900 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 10:55:16,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:16 BoogieIcfgContainer [2022-11-16 10:55:16,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:55:16,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:55:16,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:55:16,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:55:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:55:14" (1/3) ... [2022-11-16 10:55:16,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47840c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:16, skipping insertion in model container [2022-11-16 10:55:16,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:55:15" (2/3) ... [2022-11-16 10:55:16,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47840c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:55:16, skipping insertion in model container [2022-11-16 10:55:16,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:55:16" (3/3) ... [2022-11-16 10:55:16,915 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 10:55:16,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:55:16,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 10:55:17,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:55:17,021 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;@2b74c071, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:55:17,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 10:55:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:17,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 10:55:17,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:17,041 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] [2022-11-16 10:55:17,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1949123702, now seen corresponding path program 1 times [2022-11-16 10:55:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:17,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369070668] [2022-11-16 10:55:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369070668] [2022-11-16 10:55:17,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369070668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:17,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:17,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:55:17,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604614232] [2022-11-16 10:55:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:17,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:55:17,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:55:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:17,992 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.7183098591549295) internal successors, (366), 214 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:18,466 INFO L93 Difference]: Finished difference Result 867 states and 1402 transitions. [2022-11-16 10:55:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:18,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 10:55:18,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:18,498 INFO L225 Difference]: With dead ends: 867 [2022-11-16 10:55:18,498 INFO L226 Difference]: Without dead ends: 747 [2022-11-16 10:55:18,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 10:55:18,508 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 2370 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:18,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 2217 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:55:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-16 10:55:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 328. [2022-11-16 10:55:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.507645259938838) internal successors, (493), 327 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 493 transitions. [2022-11-16 10:55:18,639 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 493 transitions. Word has length 80 [2022-11-16 10:55:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:18,641 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 493 transitions. [2022-11-16 10:55:18,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 493 transitions. [2022-11-16 10:55:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 10:55:18,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:18,654 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] [2022-11-16 10:55:18,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:55:18,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash 13403552, now seen corresponding path program 1 times [2022-11-16 10:55:18,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045722147] [2022-11-16 10:55:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:19,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045722147] [2022-11-16 10:55:19,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045722147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:19,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:19,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:55:19,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431324659] [2022-11-16 10:55:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:19,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:55:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:55:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:19,027 INFO L87 Difference]: Start difference. First operand 328 states and 493 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:19,614 INFO L93 Difference]: Finished difference Result 1424 states and 2210 transitions. [2022-11-16 10:55:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:19,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-16 10:55:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:19,620 INFO L225 Difference]: With dead ends: 1424 [2022-11-16 10:55:19,621 INFO L226 Difference]: Without dead ends: 1176 [2022-11-16 10:55:19,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:19,632 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1178 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:19,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1466 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:55:19,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-11-16 10:55:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1168. [2022-11-16 10:55:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.5475578406169666) internal successors, (1806), 1167 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1806 transitions. [2022-11-16 10:55:19,904 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1806 transitions. Word has length 81 [2022-11-16 10:55:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:19,909 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1806 transitions. [2022-11-16 10:55:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1806 transitions. [2022-11-16 10:55:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 10:55:19,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:19,918 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] [2022-11-16 10:55:19,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:55:19,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2050473049, now seen corresponding path program 1 times [2022-11-16 10:55:19,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:19,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927686528] [2022-11-16 10:55:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:20,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:20,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927686528] [2022-11-16 10:55:20,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927686528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:20,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:20,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153031617] [2022-11-16 10:55:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:20,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:20,168 INFO L87 Difference]: Start difference. First operand 1168 states and 1806 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:20,967 INFO L93 Difference]: Finished difference Result 3105 states and 4859 transitions. [2022-11-16 10:55:20,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:20,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-16 10:55:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:20,978 INFO L225 Difference]: With dead ends: 3105 [2022-11-16 10:55:20,978 INFO L226 Difference]: Without dead ends: 2018 [2022-11-16 10:55:20,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:20,982 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1168 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:20,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 298 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:55:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-11-16 10:55:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2016. [2022-11-16 10:55:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2015 states have (on average 1.5563275434243176) internal successors, (3136), 2015 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3136 transitions. [2022-11-16 10:55:21,414 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3136 transitions. Word has length 82 [2022-11-16 10:55:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:21,414 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 3136 transitions. [2022-11-16 10:55:21,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3136 transitions. [2022-11-16 10:55:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 10:55:21,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:21,418 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] [2022-11-16 10:55:21,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:55:21,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash 269412074, now seen corresponding path program 1 times [2022-11-16 10:55:21,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:21,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698706863] [2022-11-16 10:55:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:21,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:21,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:21,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698706863] [2022-11-16 10:55:21,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698706863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:21,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:21,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:21,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503877931] [2022-11-16 10:55:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:21,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:21,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:21,569 INFO L87 Difference]: Start difference. First operand 2016 states and 3136 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:22,626 INFO L93 Difference]: Finished difference Result 5537 states and 8684 transitions. [2022-11-16 10:55:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-16 10:55:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:22,642 INFO L225 Difference]: With dead ends: 5537 [2022-11-16 10:55:22,642 INFO L226 Difference]: Without dead ends: 3632 [2022-11-16 10:55:22,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:22,647 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1134 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:22,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 298 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:55:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2022-11-16 10:55:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3630. [2022-11-16 10:55:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 3629 states have (on average 1.5593827500688895) internal successors, (5659), 3629 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5659 transitions. [2022-11-16 10:55:23,293 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5659 transitions. Word has length 82 [2022-11-16 10:55:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5659 transitions. [2022-11-16 10:55:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5659 transitions. [2022-11-16 10:55:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 10:55:23,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:23,298 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] [2022-11-16 10:55:23,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 10:55:23,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 778028859, now seen corresponding path program 1 times [2022-11-16 10:55:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:23,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266766469] [2022-11-16 10:55:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:23,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:23,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266766469] [2022-11-16 10:55:23,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266766469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:23,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:23,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640230518] [2022-11-16 10:55:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:23,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:23,547 INFO L87 Difference]: Start difference. First operand 3630 states and 5659 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:25,052 INFO L93 Difference]: Finished difference Result 10317 states and 16188 transitions. [2022-11-16 10:55:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:25,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-16 10:55:25,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:25,081 INFO L225 Difference]: With dead ends: 10317 [2022-11-16 10:55:25,082 INFO L226 Difference]: Without dead ends: 6832 [2022-11-16 10:55:25,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:25,088 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1116 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:25,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 309 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:55:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2022-11-16 10:55:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6830. [2022-11-16 10:55:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 6829 states have (on average 1.5618685019768634) internal successors, (10666), 6829 states have internal predecessors, (10666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 10666 transitions. [2022-11-16 10:55:26,355 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 10666 transitions. Word has length 82 [2022-11-16 10:55:26,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:26,358 INFO L495 AbstractCegarLoop]: Abstraction has 6830 states and 10666 transitions. [2022-11-16 10:55:26,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 10666 transitions. [2022-11-16 10:55:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 10:55:26,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:26,367 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] [2022-11-16 10:55:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:55:26,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1091254392, now seen corresponding path program 1 times [2022-11-16 10:55:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:26,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715400516] [2022-11-16 10:55:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:26,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:26,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715400516] [2022-11-16 10:55:26,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715400516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:26,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:26,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:26,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724937654] [2022-11-16 10:55:26,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:26,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:26,522 INFO L87 Difference]: Start difference. First operand 6830 states and 10666 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:28,881 INFO L93 Difference]: Finished difference Result 20144 states and 31540 transitions. [2022-11-16 10:55:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-16 10:55:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:28,963 INFO L225 Difference]: With dead ends: 20144 [2022-11-16 10:55:28,964 INFO L226 Difference]: Without dead ends: 13372 [2022-11-16 10:55:28,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:28,977 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1182 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:28,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 296 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:55:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2022-11-16 10:55:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 13370. [2022-11-16 10:55:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13370 states, 13369 states have (on average 1.5566609320068816) internal successors, (20811), 13369 states have internal predecessors, (20811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13370 states to 13370 states and 20811 transitions. [2022-11-16 10:55:31,017 INFO L78 Accepts]: Start accepts. Automaton has 13370 states and 20811 transitions. Word has length 82 [2022-11-16 10:55:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:31,017 INFO L495 AbstractCegarLoop]: Abstraction has 13370 states and 20811 transitions. [2022-11-16 10:55:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 13370 states and 20811 transitions. [2022-11-16 10:55:31,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 10:55:31,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:31,023 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] [2022-11-16 10:55:31,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:55:31,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash 980453495, now seen corresponding path program 1 times [2022-11-16 10:55:31,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:31,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875750115] [2022-11-16 10:55:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:31,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:31,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875750115] [2022-11-16 10:55:31,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875750115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:31,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:31,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 10:55:31,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781172019] [2022-11-16 10:55:31,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:31,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:31,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:31,165 INFO L87 Difference]: Start difference. First operand 13370 states and 20811 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:34,312 INFO L93 Difference]: Finished difference Result 37565 states and 58554 transitions. [2022-11-16 10:55:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:55:34,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-16 10:55:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:34,382 INFO L225 Difference]: With dead ends: 37565 [2022-11-16 10:55:34,382 INFO L226 Difference]: Without dead ends: 24237 [2022-11-16 10:55:34,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:55:34,400 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1212 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:34,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 292 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:55:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24237 states. [2022-11-16 10:55:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24237 to 24235. [2022-11-16 10:55:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24235 states, 24234 states have (on average 1.547330197243542) internal successors, (37498), 24234 states have internal predecessors, (37498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24235 states to 24235 states and 37498 transitions. [2022-11-16 10:55:37,811 INFO L78 Accepts]: Start accepts. Automaton has 24235 states and 37498 transitions. Word has length 82 [2022-11-16 10:55:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:37,811 INFO L495 AbstractCegarLoop]: Abstraction has 24235 states and 37498 transitions. [2022-11-16 10:55:37,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 24235 states and 37498 transitions. [2022-11-16 10:55:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 10:55:37,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:37,819 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] [2022-11-16 10:55:37,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:55:37,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:37,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1660254060, now seen corresponding path program 1 times [2022-11-16 10:55:37,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:37,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908510618] [2022-11-16 10:55:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:37,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:38,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908510618] [2022-11-16 10:55:38,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908510618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:38,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:38,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:55:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309363960] [2022-11-16 10:55:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:38,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:55:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:55:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:55:38,126 INFO L87 Difference]: Start difference. First operand 24235 states and 37498 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:55:44,300 INFO L93 Difference]: Finished difference Result 48237 states and 74395 transitions. [2022-11-16 10:55:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:55:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-16 10:55:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:55:44,466 INFO L225 Difference]: With dead ends: 48237 [2022-11-16 10:55:44,466 INFO L226 Difference]: Without dead ends: 48235 [2022-11-16 10:55:44,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:55:44,485 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 304 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:55:44,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1237 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:55:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48235 states. [2022-11-16 10:55:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48235 to 24811. [2022-11-16 10:55:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24811 states, 24810 states have (on average 1.5346231358323257) internal successors, (38074), 24810 states have internal predecessors, (38074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24811 states to 24811 states and 38074 transitions. [2022-11-16 10:55:48,547 INFO L78 Accepts]: Start accepts. Automaton has 24811 states and 38074 transitions. Word has length 83 [2022-11-16 10:55:48,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:55:48,547 INFO L495 AbstractCegarLoop]: Abstraction has 24811 states and 38074 transitions. [2022-11-16 10:55:48,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 24811 states and 38074 transitions. [2022-11-16 10:55:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 10:55:48,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:55:48,556 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] [2022-11-16 10:55:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:55:48,556 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:55:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash 207675476, now seen corresponding path program 1 times [2022-11-16 10:55:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:48,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370151367] [2022-11-16 10:55:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:49,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370151367] [2022-11-16 10:55:49,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370151367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:49,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:49,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 10:55:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394753004] [2022-11-16 10:55:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 10:55:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 10:55:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:55:49,253 INFO L87 Difference]: Start difference. First operand 24811 states and 38074 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:56:03,424 INFO L93 Difference]: Finished difference Result 105674 states and 160901 transitions. [2022-11-16 10:56:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:56:03,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-16 10:56:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:56:03,685 INFO L225 Difference]: With dead ends: 105674 [2022-11-16 10:56:03,686 INFO L226 Difference]: Without dead ends: 91362 [2022-11-16 10:56:03,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:56:03,734 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1977 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:56:03,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 1390 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 10:56:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91362 states. [2022-11-16 10:56:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91362 to 25104. [2022-11-16 10:56:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25104 states, 25103 states have (on average 1.5327650081663546) internal successors, (38477), 25103 states have internal predecessors, (38477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25104 states to 25104 states and 38477 transitions. [2022-11-16 10:56:08,735 INFO L78 Accepts]: Start accepts. Automaton has 25104 states and 38477 transitions. Word has length 84 [2022-11-16 10:56:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:56:08,735 INFO L495 AbstractCegarLoop]: Abstraction has 25104 states and 38477 transitions. [2022-11-16 10:56:08,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25104 states and 38477 transitions. [2022-11-16 10:56:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 10:56:08,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:56:08,744 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] [2022-11-16 10:56:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:56:08,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:56:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1543265332, now seen corresponding path program 1 times [2022-11-16 10:56:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:08,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146373451] [2022-11-16 10:56:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:56:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:56:09,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:09,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146373451] [2022-11-16 10:56:09,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146373451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:56:09,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:56:09,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 10:56:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473814275] [2022-11-16 10:56:09,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:56:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 10:56:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 10:56:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:56:09,260 INFO L87 Difference]: Start difference. First operand 25104 states and 38477 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)