./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6994f5bfaf30a704120445031d2592cb0b289806736d22478b28cc84ed2b2216 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:09:18,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:09:18,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:09:19,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:09:19,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:09:19,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:09:19,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:09:19,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:09:19,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:09:19,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:09:19,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:09:19,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:09:19,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:09:19,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:09:19,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:09:19,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:09:19,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:09:19,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:09:19,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:09:19,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:09:19,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:09:19,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:09:19,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:09:19,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:09:19,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:09:19,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:09:19,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:09:19,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:09:19,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:09:19,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:09:19,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:09:19,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:09:19,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:09:19,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:09:19,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:09:19,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:09:19,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:09:19,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:09:19,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:09:19,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:09:19,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:09:19,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:09:19,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:09:19,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:09:19,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:09:19,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:09:19,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:09:19,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:09:19,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:09:19,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:09:19,168 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:09:19,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:09:19,170 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:09:19,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:09:19,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:09:19,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:09:19,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:09:19,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:09:19,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:09:19,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:09:19,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:09:19,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:09:19,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:09:19,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:09:19,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:09:19,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:09:19,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:09:19,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:09:19,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:09:19,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:09:19,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:09:19,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:09:19,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:09:19,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:09:19,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:09:19,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6994f5bfaf30a704120445031d2592cb0b289806736d22478b28cc84ed2b2216 [2022-11-21 16:09:19,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:09:19,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:09:19,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:09:19,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:09:19,565 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:09:19,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 16:09:23,478 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:09:23,936 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:09:23,937 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 16:09:23,952 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/data/a2550686a/546af78205864f4bafe4c56df5d73ad5/FLAGbadee6d41 [2022-11-21 16:09:23,969 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/data/a2550686a/546af78205864f4bafe4c56df5d73ad5 [2022-11-21 16:09:23,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:09:23,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:09:23,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:09:23,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:09:23,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:09:23,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:09:23" (1/1) ... [2022-11-21 16:09:23,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb8f020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:23, skipping insertion in model container [2022-11-21 16:09:23,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:09:23" (1/1) ... [2022-11-21 16:09:24,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:09:24,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:09:24,303 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c[11335,11348] [2022-11-21 16:09:24,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:09:24,328 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:09:24,393 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/sv-benchmarks/c/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c[11335,11348] [2022-11-21 16:09:24,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:09:24,430 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:09:24,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24 WrapperNode [2022-11-21 16:09:24,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:09:24,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:09:24,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:09:24,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:09:24,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,504 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 309 [2022-11-21 16:09:24,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:09:24,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:09:24,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:09:24,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:09:24,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,538 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:09:24,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:09:24,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:09:24,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:09:24,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (1/1) ... [2022-11-21 16:09:24,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:09:24,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:09:24,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:09:24,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:09:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:09:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:09:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:09:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:09:24,779 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:09:24,782 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:09:25,578 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:09:25,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:09:25,600 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:09:25,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:09:25 BoogieIcfgContainer [2022-11-21 16:09:25,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:09:25,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:09:25,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:09:25,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:09:25,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:09:23" (1/3) ... [2022-11-21 16:09:25,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24587e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:09:25, skipping insertion in model container [2022-11-21 16:09:25,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:09:24" (2/3) ... [2022-11-21 16:09:25,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24587e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:09:25, skipping insertion in model container [2022-11-21 16:09:25,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:09:25" (3/3) ... [2022-11-21 16:09:25,616 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 16:09:25,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:09:25,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:09:25,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:09:25,713 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;@68b86efd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:09:25,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:09:25,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.7530864197530864) internal successors, (142), 82 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:09:25,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:25,731 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] [2022-11-21 16:09:25,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:25,739 INFO L85 PathProgramCache]: Analyzing trace with hash -255059087, now seen corresponding path program 1 times [2022-11-21 16:09:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660942976] [2022-11-21 16:09:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:26,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:26,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660942976] [2022-11-21 16:09:26,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660942976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:26,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:26,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:09:26,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694210682] [2022-11-21 16:09:26,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:26,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:09:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:09:26,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:09:26,192 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.7530864197530864) internal successors, (142), 82 states have internal predecessors, (142), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:26,255 INFO L93 Difference]: Finished difference Result 126 states and 213 transitions. [2022-11-21 16:09:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:09:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-11-21 16:09:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:26,284 INFO L225 Difference]: With dead ends: 126 [2022-11-21 16:09:26,285 INFO L226 Difference]: Without dead ends: 79 [2022-11-21 16:09:26,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:09:26,296 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:26,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:09:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-21 16:09:26,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-21 16:09:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 78 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 135 transitions. [2022-11-21 16:09:26,362 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 135 transitions. Word has length 23 [2022-11-21 16:09:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:26,364 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 135 transitions. [2022-11-21 16:09:26,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2022-11-21 16:09:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:09:26,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:26,368 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] [2022-11-21 16:09:26,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:09:26,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:26,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:26,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2045763503, now seen corresponding path program 1 times [2022-11-21 16:09:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:26,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256546063] [2022-11-21 16:09:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256546063] [2022-11-21 16:09:26,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256546063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:26,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:26,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:09:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087767871] [2022-11-21 16:09:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:26,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:09:26,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:09:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:09:26,746 INFO L87 Difference]: Start difference. First operand 79 states and 135 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:26,919 INFO L93 Difference]: Finished difference Result 125 states and 206 transitions. [2022-11-21 16:09:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:09:26,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2022-11-21 16:09:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:26,921 INFO L225 Difference]: With dead ends: 125 [2022-11-21 16:09:26,922 INFO L226 Difference]: Without dead ends: 79 [2022-11-21 16:09:26,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:26,926 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 3 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:26,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 498 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:09:26,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-21 16:09:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-21 16:09:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 78 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2022-11-21 16:09:26,938 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 23 [2022-11-21 16:09:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:26,939 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2022-11-21 16:09:26,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2022-11-21 16:09:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 16:09:26,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:26,941 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] [2022-11-21 16:09:26,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:09:26,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:26,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:26,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1411199270, now seen corresponding path program 1 times [2022-11-21 16:09:26,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:26,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537149191] [2022-11-21 16:09:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:27,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:27,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537149191] [2022-11-21 16:09:27,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537149191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:27,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:27,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:09:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636891074] [2022-11-21 16:09:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:09:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:27,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:09:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:27,375 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:27,868 INFO L93 Difference]: Finished difference Result 499 states and 774 transitions. [2022-11-21 16:09:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:09:27,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2022-11-21 16:09:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:27,873 INFO L225 Difference]: With dead ends: 499 [2022-11-21 16:09:27,873 INFO L226 Difference]: Without dead ends: 457 [2022-11-21 16:09:27,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:09:27,876 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 758 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:27,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1307 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:09:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-21 16:09:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 119. [2022-11-21 16:09:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.423728813559322) internal successors, (168), 118 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 168 transitions. [2022-11-21 16:09:27,926 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 168 transitions. Word has length 53 [2022-11-21 16:09:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:27,927 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 168 transitions. [2022-11-21 16:09:27,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 168 transitions. [2022-11-21 16:09:27,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 16:09:27,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:27,931 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] [2022-11-21 16:09:27,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:09:27,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1832103350, now seen corresponding path program 1 times [2022-11-21 16:09:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:27,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589341984] [2022-11-21 16:09:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:27,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:28,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589341984] [2022-11-21 16:09:28,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589341984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:28,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:28,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:09:28,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894327765] [2022-11-21 16:09:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:28,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:09:28,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:09:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:28,086 INFO L87 Difference]: Start difference. First operand 119 states and 168 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:28,128 INFO L93 Difference]: Finished difference Result 272 states and 411 transitions. [2022-11-21 16:09:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:09:28,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-11-21 16:09:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:28,131 INFO L225 Difference]: With dead ends: 272 [2022-11-21 16:09:28,131 INFO L226 Difference]: Without dead ends: 190 [2022-11-21 16:09:28,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:28,133 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:28,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 164 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:09:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-21 16:09:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-11-21 16:09:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4759358288770053) internal successors, (276), 187 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 276 transitions. [2022-11-21 16:09:28,162 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 276 transitions. Word has length 55 [2022-11-21 16:09:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:28,163 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 276 transitions. [2022-11-21 16:09:28,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 276 transitions. [2022-11-21 16:09:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 16:09:28,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:28,166 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] [2022-11-21 16:09:28,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:09:28,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:28,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1898596862, now seen corresponding path program 1 times [2022-11-21 16:09:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:28,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937327615] [2022-11-21 16:09:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:28,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:28,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937327615] [2022-11-21 16:09:28,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937327615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:28,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:28,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:09:28,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614664702] [2022-11-21 16:09:28,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:09:28,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:09:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:28,628 INFO L87 Difference]: Start difference. First operand 188 states and 276 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:28,918 INFO L93 Difference]: Finished difference Result 341 states and 516 transitions. [2022-11-21 16:09:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:09:28,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2022-11-21 16:09:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:28,920 INFO L225 Difference]: With dead ends: 341 [2022-11-21 16:09:28,920 INFO L226 Difference]: Without dead ends: 190 [2022-11-21 16:09:28,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:09:28,923 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 374 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:28,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 350 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:09:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-21 16:09:28,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-11-21 16:09:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.46524064171123) internal successors, (274), 187 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 274 transitions. [2022-11-21 16:09:28,990 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 274 transitions. Word has length 55 [2022-11-21 16:09:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:28,995 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 274 transitions. [2022-11-21 16:09:28,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 274 transitions. [2022-11-21 16:09:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 16:09:29,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:29,012 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] [2022-11-21 16:09:29,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:09:29,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1687762504, now seen corresponding path program 1 times [2022-11-21 16:09:29,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536161572] [2022-11-21 16:09:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:29,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536161572] [2022-11-21 16:09:29,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536161572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:29,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:09:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278532405] [2022-11-21 16:09:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:09:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:09:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:09:29,428 INFO L87 Difference]: Start difference. First operand 188 states and 274 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:29,669 INFO L93 Difference]: Finished difference Result 336 states and 501 transitions. [2022-11-21 16:09:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:09:29,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 56 [2022-11-21 16:09:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:29,672 INFO L225 Difference]: With dead ends: 336 [2022-11-21 16:09:29,672 INFO L226 Difference]: Without dead ends: 334 [2022-11-21 16:09:29,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:09:29,674 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 394 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:29,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 560 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:09:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-21 16:09:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 194. [2022-11-21 16:09:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4455958549222798) internal successors, (279), 193 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2022-11-21 16:09:29,711 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 56 [2022-11-21 16:09:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:29,711 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2022-11-21 16:09:29,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2022-11-21 16:09:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 16:09:29,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:29,713 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] [2022-11-21 16:09:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:09:29,714 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash -407583458, now seen corresponding path program 1 times [2022-11-21 16:09:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:29,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729992046] [2022-11-21 16:09:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:29,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:29,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729992046] [2022-11-21 16:09:29,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729992046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:29,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:29,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:09:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551880401] [2022-11-21 16:09:29,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:29,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:09:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:09:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:29,796 INFO L87 Difference]: Start difference. First operand 194 states and 279 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:29,887 INFO L93 Difference]: Finished difference Result 364 states and 540 transitions. [2022-11-21 16:09:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:09:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-21 16:09:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:29,891 INFO L225 Difference]: With dead ends: 364 [2022-11-21 16:09:29,891 INFO L226 Difference]: Without dead ends: 276 [2022-11-21 16:09:29,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:29,898 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:29,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:09:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-21 16:09:29,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2022-11-21 16:09:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.465201465201465) internal successors, (400), 273 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:29,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 400 transitions. [2022-11-21 16:09:29,959 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 400 transitions. Word has length 57 [2022-11-21 16:09:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:29,959 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 400 transitions. [2022-11-21 16:09:29,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 400 transitions. [2022-11-21 16:09:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 16:09:29,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:29,961 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] [2022-11-21 16:09:29,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:09:29,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1094534942, now seen corresponding path program 1 times [2022-11-21 16:09:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:29,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066222301] [2022-11-21 16:09:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:29,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:30,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066222301] [2022-11-21 16:09:30,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066222301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:30,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:30,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:09:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255032698] [2022-11-21 16:09:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:30,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:09:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:09:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:30,068 INFO L87 Difference]: Start difference. First operand 274 states and 400 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:30,175 INFO L93 Difference]: Finished difference Result 720 states and 1080 transitions. [2022-11-21 16:09:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:09:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-21 16:09:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:30,179 INFO L225 Difference]: With dead ends: 720 [2022-11-21 16:09:30,179 INFO L226 Difference]: Without dead ends: 485 [2022-11-21 16:09:30,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:30,181 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 53 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:30,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:09:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-21 16:09:30,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2022-11-21 16:09:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4771784232365146) internal successors, (712), 482 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 712 transitions. [2022-11-21 16:09:30,283 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 712 transitions. Word has length 57 [2022-11-21 16:09:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:30,284 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 712 transitions. [2022-11-21 16:09:30,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 712 transitions. [2022-11-21 16:09:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 16:09:30,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:30,285 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] [2022-11-21 16:09:30,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:09:30,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:30,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1120933858, now seen corresponding path program 1 times [2022-11-21 16:09:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:30,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260725700] [2022-11-21 16:09:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:30,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:30,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260725700] [2022-11-21 16:09:30,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260725700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:30,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:30,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:09:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426994765] [2022-11-21 16:09:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:09:30,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:09:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:30,357 INFO L87 Difference]: Start difference. First operand 483 states and 712 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:30,638 INFO L93 Difference]: Finished difference Result 1323 states and 1974 transitions. [2022-11-21 16:09:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:09:30,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-21 16:09:30,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:30,644 INFO L225 Difference]: With dead ends: 1323 [2022-11-21 16:09:30,644 INFO L226 Difference]: Without dead ends: 879 [2022-11-21 16:09:30,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:30,648 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 51 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:30,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 226 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:09:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-21 16:09:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2022-11-21 16:09:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.4703196347031964) internal successors, (1288), 876 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1288 transitions. [2022-11-21 16:09:30,865 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1288 transitions. Word has length 57 [2022-11-21 16:09:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:30,865 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1288 transitions. [2022-11-21 16:09:30,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1288 transitions. [2022-11-21 16:09:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 16:09:30,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:30,867 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] [2022-11-21 16:09:30,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:09:30,868 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:30,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash 659999006, now seen corresponding path program 1 times [2022-11-21 16:09:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:30,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554087028] [2022-11-21 16:09:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:30,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:30,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:30,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554087028] [2022-11-21 16:09:30,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554087028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:30,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:30,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:09:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788469283] [2022-11-21 16:09:30,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:09:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:09:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:30,951 INFO L87 Difference]: Start difference. First operand 877 states and 1288 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:31,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:31,345 INFO L93 Difference]: Finished difference Result 2457 states and 3618 transitions. [2022-11-21 16:09:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:09:31,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-21 16:09:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:31,353 INFO L225 Difference]: With dead ends: 2457 [2022-11-21 16:09:31,353 INFO L226 Difference]: Without dead ends: 1619 [2022-11-21 16:09:31,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:31,356 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 49 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:31,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:09:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2022-11-21 16:09:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1617. [2022-11-21 16:09:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1616 states have (on average 1.4504950495049505) internal successors, (2344), 1616 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2344 transitions. [2022-11-21 16:09:31,729 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2344 transitions. Word has length 57 [2022-11-21 16:09:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:31,730 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2344 transitions. [2022-11-21 16:09:31,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2344 transitions. [2022-11-21 16:09:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 16:09:31,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:31,732 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] [2022-11-21 16:09:31,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:09:31,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash -143727074, now seen corresponding path program 1 times [2022-11-21 16:09:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825145534] [2022-11-21 16:09:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:09:31,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:31,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825145534] [2022-11-21 16:09:31,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825145534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:31,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:31,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:09:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070901486] [2022-11-21 16:09:31,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:31,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:09:31,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:09:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:31,799 INFO L87 Difference]: Start difference. First operand 1617 states and 2344 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:32,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:32,486 INFO L93 Difference]: Finished difference Result 4581 states and 6618 transitions. [2022-11-21 16:09:32,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:09:32,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-21 16:09:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:32,500 INFO L225 Difference]: With dead ends: 4581 [2022-11-21 16:09:32,501 INFO L226 Difference]: Without dead ends: 3003 [2022-11-21 16:09:32,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:09:32,504 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 55 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:32,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 230 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:09:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2022-11-21 16:09:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3001. [2022-11-21 16:09:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 3000 states have (on average 1.4213333333333333) internal successors, (4264), 3000 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4264 transitions. [2022-11-21 16:09:33,152 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4264 transitions. Word has length 57 [2022-11-21 16:09:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:33,152 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 4264 transitions. [2022-11-21 16:09:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4264 transitions. [2022-11-21 16:09:33,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:09:33,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:33,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:09:33,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:09:33,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:33,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1172786557, now seen corresponding path program 1 times [2022-11-21 16:09:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:33,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993494119] [2022-11-21 16:09:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:09:33,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:33,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993494119] [2022-11-21 16:09:33,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993494119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:33,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:33,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:09:33,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573985260] [2022-11-21 16:09:33,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:33,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:09:33,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:33,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:09:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:33,381 INFO L87 Difference]: Start difference. First operand 3001 states and 4264 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:36,255 INFO L93 Difference]: Finished difference Result 17605 states and 25070 transitions. [2022-11-21 16:09:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:09:36,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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 76 [2022-11-21 16:09:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:36,333 INFO L225 Difference]: With dead ends: 17605 [2022-11-21 16:09:36,334 INFO L226 Difference]: Without dead ends: 15491 [2022-11-21 16:09:36,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:09:36,342 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 550 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:36,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 710 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:09:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15491 states. [2022-11-21 16:09:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15491 to 5545. [2022-11-21 16:09:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 5544 states have (on average 1.4155844155844155) internal successors, (7848), 5544 states have internal predecessors, (7848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 7848 transitions. [2022-11-21 16:09:37,668 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 7848 transitions. Word has length 76 [2022-11-21 16:09:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:37,669 INFO L495 AbstractCegarLoop]: Abstraction has 5545 states and 7848 transitions. [2022-11-21 16:09:37,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 7848 transitions. [2022-11-21 16:09:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:09:37,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:37,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:09:37,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:09:37,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash 329331843, now seen corresponding path program 1 times [2022-11-21 16:09:37,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:37,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079043957] [2022-11-21 16:09:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:09:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:37,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079043957] [2022-11-21 16:09:37,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079043957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:37,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:37,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:09:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425633496] [2022-11-21 16:09:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:37,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:09:37,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:09:37,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:37,937 INFO L87 Difference]: Start difference. First operand 5545 states and 7848 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:41,430 INFO L93 Difference]: Finished difference Result 20565 states and 29262 transitions. [2022-11-21 16:09:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:09:41,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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 76 [2022-11-21 16:09:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:41,487 INFO L225 Difference]: With dead ends: 20565 [2022-11-21 16:09:41,487 INFO L226 Difference]: Without dead ends: 17603 [2022-11-21 16:09:41,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:09:41,497 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 596 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:41,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 737 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:09:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17603 states. [2022-11-21 16:09:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17603 to 9561. [2022-11-21 16:09:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9561 states, 9560 states have (on average 1.4117154811715482) internal successors, (13496), 9560 states have internal predecessors, (13496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:43,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9561 states to 9561 states and 13496 transitions. [2022-11-21 16:09:43,471 INFO L78 Accepts]: Start accepts. Automaton has 9561 states and 13496 transitions. Word has length 76 [2022-11-21 16:09:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:43,472 INFO L495 AbstractCegarLoop]: Abstraction has 9561 states and 13496 transitions. [2022-11-21 16:09:43,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 9561 states and 13496 transitions. [2022-11-21 16:09:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:09:43,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:43,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:09:43,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:09:43,476 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1886136957, now seen corresponding path program 1 times [2022-11-21 16:09:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:43,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045574883] [2022-11-21 16:09:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:09:43,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:43,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045574883] [2022-11-21 16:09:43,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045574883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:43,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:43,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:09:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737911807] [2022-11-21 16:09:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:43,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:09:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:09:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:43,741 INFO L87 Difference]: Start difference. First operand 9561 states and 13496 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:47,122 INFO L93 Difference]: Finished difference Result 23525 states and 33438 transitions. [2022-11-21 16:09:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:09:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 76 [2022-11-21 16:09:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:47,184 INFO L225 Difference]: With dead ends: 23525 [2022-11-21 16:09:47,184 INFO L226 Difference]: Without dead ends: 20563 [2022-11-21 16:09:47,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:09:47,196 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 644 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:47,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 684 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:09:47,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20563 states. [2022-11-21 16:09:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20563 to 12521. [2022-11-21 16:09:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 12520 states have (on average 1.4115015974440894) internal successors, (17672), 12520 states have internal predecessors, (17672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 17672 transitions. [2022-11-21 16:09:49,070 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 17672 transitions. Word has length 76 [2022-11-21 16:09:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:49,070 INFO L495 AbstractCegarLoop]: Abstraction has 12521 states and 17672 transitions. [2022-11-21 16:09:49,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 17672 transitions. [2022-11-21 16:09:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:09:49,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:49,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:09:49,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:09:49,075 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:49,076 INFO L85 PathProgramCache]: Analyzing trace with hash -105204093, now seen corresponding path program 1 times [2022-11-21 16:09:49,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:49,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230690132] [2022-11-21 16:09:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:49,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:09:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230690132] [2022-11-21 16:09:49,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230690132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:49,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:49,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:09:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001985060] [2022-11-21 16:09:49,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:49,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:09:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:09:49,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:49,290 INFO L87 Difference]: Start difference. First operand 12521 states and 17672 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:53,166 INFO L93 Difference]: Finished difference Result 26485 states and 37614 transitions. [2022-11-21 16:09:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:09:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 76 [2022-11-21 16:09:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:53,228 INFO L225 Difference]: With dead ends: 26485 [2022-11-21 16:09:53,229 INFO L226 Difference]: Without dead ends: 23523 [2022-11-21 16:09:53,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:09:53,240 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 600 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:53,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 726 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:09:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23523 states. [2022-11-21 16:09:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23523 to 15481. [2022-11-21 16:09:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 1.4113695090439276) internal successors, (21848), 15480 states have internal predecessors, (21848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 21848 transitions. [2022-11-21 16:09:55,548 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 21848 transitions. Word has length 76 [2022-11-21 16:09:55,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:09:55,548 INFO L495 AbstractCegarLoop]: Abstraction has 15481 states and 21848 transitions. [2022-11-21 16:09:55,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 21848 transitions. [2022-11-21 16:09:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:09:55,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:09:55,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:09:55,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:09:55,553 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:09:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:09:55,554 INFO L85 PathProgramCache]: Analyzing trace with hash -908930173, now seen corresponding path program 1 times [2022-11-21 16:09:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:09:55,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459229464] [2022-11-21 16:09:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:09:55,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:09:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:09:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:09:55,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:09:55,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459229464] [2022-11-21 16:09:55,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459229464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:09:55,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:09:55,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:09:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97488586] [2022-11-21 16:09:55,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:09:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:09:55,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:09:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:09:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:09:55,785 INFO L87 Difference]: Start difference. First operand 15481 states and 21848 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:09:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:09:59,888 INFO L93 Difference]: Finished difference Result 29445 states and 41790 transitions. [2022-11-21 16:09:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:09:59,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 76 [2022-11-21 16:09:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:09:59,957 INFO L225 Difference]: With dead ends: 29445 [2022-11-21 16:09:59,958 INFO L226 Difference]: Without dead ends: 26483 [2022-11-21 16:09:59,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:09:59,969 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 552 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:09:59,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 820 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:10:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26483 states. [2022-11-21 16:10:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26483 to 18441. [2022-11-21 16:10:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.4112798264642084) internal successors, (26024), 18440 states have internal predecessors, (26024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 26024 transitions. [2022-11-21 16:10:03,414 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 26024 transitions. Word has length 76 [2022-11-21 16:10:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:03,414 INFO L495 AbstractCegarLoop]: Abstraction has 18441 states and 26024 transitions. [2022-11-21 16:10:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 26024 transitions. [2022-11-21 16:10:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:10:03,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:03,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:03,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:10:03,420 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash -981258812, now seen corresponding path program 1 times [2022-11-21 16:10:03,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:03,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280937304] [2022-11-21 16:10:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:03,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:03,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280937304] [2022-11-21 16:10:03,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280937304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:03,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:03,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:10:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608518993] [2022-11-21 16:10:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:10:03,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:10:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:03,561 INFO L87 Difference]: Start difference. First operand 18441 states and 26024 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:06,171 INFO L93 Difference]: Finished difference Result 36845 states and 52010 transitions. [2022-11-21 16:10:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:10:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-11-21 16:10:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:06,205 INFO L225 Difference]: With dead ends: 36845 [2022-11-21 16:10:06,205 INFO L226 Difference]: Without dead ends: 18443 [2022-11-21 16:10:06,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:06,229 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 45 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:06,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 230 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:10:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18443 states. [2022-11-21 16:10:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18443 to 18441. [2022-11-21 16:10:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.3952277657266812) internal successors, (25728), 18440 states have internal predecessors, (25728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 25728 transitions. [2022-11-21 16:10:09,024 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 25728 transitions. Word has length 77 [2022-11-21 16:10:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:09,025 INFO L495 AbstractCegarLoop]: Abstraction has 18441 states and 25728 transitions. [2022-11-21 16:10:09,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 25728 transitions. [2022-11-21 16:10:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 16:10:09,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:09,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:09,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:10:09,029 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1342228763, now seen corresponding path program 1 times [2022-11-21 16:10:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:09,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801146751] [2022-11-21 16:10:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:09,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:09,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801146751] [2022-11-21 16:10:09,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801146751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:09,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:09,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:10:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585603924] [2022-11-21 16:10:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:09,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:10:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:10:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:09,160 INFO L87 Difference]: Start difference. First operand 18441 states and 25728 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:10,813 INFO L93 Difference]: Finished difference Result 25328 states and 35422 transitions. [2022-11-21 16:10:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:10:10,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-11-21 16:10:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:10,825 INFO L225 Difference]: With dead ends: 25328 [2022-11-21 16:10:10,825 INFO L226 Difference]: Without dead ends: 6926 [2022-11-21 16:10:10,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:10,846 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 39 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:10,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 227 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:10:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2022-11-21 16:10:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6918. [2022-11-21 16:10:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6917 states have (on average 1.3909209194737604) internal successors, (9621), 6917 states have internal predecessors, (9621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9621 transitions. [2022-11-21 16:10:12,275 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9621 transitions. Word has length 78 [2022-11-21 16:10:12,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:12,275 INFO L495 AbstractCegarLoop]: Abstraction has 6918 states and 9621 transitions. [2022-11-21 16:10:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9621 transitions. [2022-11-21 16:10:12,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 16:10:12,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:12,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:12,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:10:12,279 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:12,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1119392618, now seen corresponding path program 1 times [2022-11-21 16:10:12,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:12,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012475292] [2022-11-21 16:10:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:12,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:12,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012475292] [2022-11-21 16:10:12,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012475292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:12,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:12,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:10:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8600490] [2022-11-21 16:10:12,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:12,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:10:12,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:12,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:10:12,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:12,404 INFO L87 Difference]: Start difference. First operand 6918 states and 9621 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:13,183 INFO L93 Difference]: Finished difference Result 10354 states and 14407 transitions. [2022-11-21 16:10:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:10:13,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-11-21 16:10:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:13,189 INFO L225 Difference]: With dead ends: 10354 [2022-11-21 16:10:13,189 INFO L226 Difference]: Without dead ends: 3488 [2022-11-21 16:10:13,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:13,197 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 41 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:13,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 206 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:10:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2022-11-21 16:10:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2022-11-21 16:10:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3485 states have (on average 1.3730272596843616) internal successors, (4785), 3485 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:13,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4785 transitions. [2022-11-21 16:10:13,777 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4785 transitions. Word has length 79 [2022-11-21 16:10:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:13,778 INFO L495 AbstractCegarLoop]: Abstraction has 3486 states and 4785 transitions. [2022-11-21 16:10:13,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4785 transitions. [2022-11-21 16:10:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-21 16:10:13,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:13,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:13,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:10:13,781 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1495153128, now seen corresponding path program 1 times [2022-11-21 16:10:13,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:13,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314371834] [2022-11-21 16:10:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:13,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:13,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314371834] [2022-11-21 16:10:13,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314371834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:13,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:13,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:10:13,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007109828] [2022-11-21 16:10:13,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:10:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:10:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:13,896 INFO L87 Difference]: Start difference. First operand 3486 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2022-11-21 16:10:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:14,269 INFO L93 Difference]: Finished difference Result 5206 states and 7153 transitions. [2022-11-21 16:10:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:10:14,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 [2022-11-21 16:10:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:14,272 INFO L225 Difference]: With dead ends: 5206 [2022-11-21 16:10:14,272 INFO L226 Difference]: Without dead ends: 1772 [2022-11-21 16:10:14,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:14,276 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 38 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:14,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 191 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:10:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-11-21 16:10:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1770. [2022-11-21 16:10:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1769 states have (on average 1.3527416619559074) internal successors, (2393), 1769 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2393 transitions. [2022-11-21 16:10:14,589 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2393 transitions. Word has length 81 [2022-11-21 16:10:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:14,590 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2393 transitions. [2022-11-21 16:10:14,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2022-11-21 16:10:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2393 transitions. [2022-11-21 16:10:14,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 16:10:14,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:14,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:14,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:10:14,593 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:14,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 572569018, now seen corresponding path program 1 times [2022-11-21 16:10:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:14,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161773731] [2022-11-21 16:10:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:14,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:14,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161773731] [2022-11-21 16:10:14,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161773731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:10:14,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:10:14,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:10:14,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910659759] [2022-11-21 16:10:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:10:14,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:10:14,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:10:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:14,738 INFO L87 Difference]: Start difference. First operand 1770 states and 2393 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2022-11-21 16:10:14,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:14,952 INFO L93 Difference]: Finished difference Result 2632 states and 3565 transitions. [2022-11-21 16:10:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:10:14,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 [2022-11-21 16:10:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:14,955 INFO L225 Difference]: With dead ends: 2632 [2022-11-21 16:10:14,955 INFO L226 Difference]: Without dead ends: 914 [2022-11-21 16:10:14,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:10:14,958 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:14,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 176 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:10:14,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-11-21 16:10:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 912. [2022-11-21 16:10:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 1.3282107574094402) internal successors, (1210), 911 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1210 transitions. [2022-11-21 16:10:15,123 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1210 transitions. Word has length 83 [2022-11-21 16:10:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:15,123 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1210 transitions. [2022-11-21 16:10:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2022-11-21 16:10:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1210 transitions. [2022-11-21 16:10:15,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-21 16:10:15,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:15,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:15,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:10:15,125 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1095761932, now seen corresponding path program 1 times [2022-11-21 16:10:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:15,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436843662] [2022-11-21 16:10:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:15,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:17,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:17,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436843662] [2022-11-21 16:10:17,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436843662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:10:17,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113947701] [2022-11-21 16:10:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:17,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:17,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:17,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:10:17,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:10:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:17,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:10:17,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:10:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:10:17,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:10:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:10:18,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113947701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:10:18,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:10:18,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2022-11-21 16:10:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885878190] [2022-11-21 16:10:18,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:10:18,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:10:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:18,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:10:18,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:10:18,109 INFO L87 Difference]: Start difference. First operand 912 states and 1210 transitions. Second operand has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:31,529 INFO L93 Difference]: Finished difference Result 10156 states and 13266 transitions. [2022-11-21 16:10:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-21 16:10:31,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-21 16:10:31,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:31,542 INFO L225 Difference]: With dead ends: 10156 [2022-11-21 16:10:31,542 INFO L226 Difference]: Without dead ends: 9296 [2022-11-21 16:10:31,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1957 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1044, Invalid=4808, Unknown=0, NotChecked=0, Total=5852 [2022-11-21 16:10:31,546 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 3810 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3810 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:31,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3810 Valid, 794 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 16:10:31,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2022-11-21 16:10:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 6382. [2022-11-21 16:10:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 6381 states have (on average 1.2994828396803009) internal successors, (8292), 6381 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 8292 transitions. [2022-11-21 16:10:32,923 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 8292 transitions. Word has length 85 [2022-11-21 16:10:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:10:32,924 INFO L495 AbstractCegarLoop]: Abstraction has 6382 states and 8292 transitions. [2022-11-21 16:10:32,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 8292 transitions. [2022-11-21 16:10:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-21 16:10:32,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:10:32,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:10:32,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:10:33,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:33,133 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:10:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:10:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash 840781523, now seen corresponding path program 1 times [2022-11-21 16:10:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:10:33,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279049132] [2022-11-21 16:10:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:33,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:10:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:34,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:10:34,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279049132] [2022-11-21 16:10:34,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279049132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:10:34,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719624191] [2022-11-21 16:10:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:10:34,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:10:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:10:34,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:10:34,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:10:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:10:34,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:10:34,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:10:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:35,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:10:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:10:36,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719624191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:10:36,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:10:36,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2022-11-21 16:10:36,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687282733] [2022-11-21 16:10:36,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:10:36,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 16:10:36,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:10:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 16:10:36,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:10:36,787 INFO L87 Difference]: Start difference. First operand 6382 states and 8292 transitions. Second operand has 28 states, 28 states have (on average 7.678571428571429) internal successors, (215), 27 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:10:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:10:58,343 INFO L93 Difference]: Finished difference Result 54306 states and 70411 transitions. [2022-11-21 16:10:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-21 16:10:58,344 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.678571428571429) internal successors, (215), 27 states have internal predecessors, (215), 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 86 [2022-11-21 16:10:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:10:58,403 INFO L225 Difference]: With dead ends: 54306 [2022-11-21 16:10:58,403 INFO L226 Difference]: Without dead ends: 48045 [2022-11-21 16:10:58,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1357, Invalid=5953, Unknown=0, NotChecked=0, Total=7310 [2022-11-21 16:10:58,417 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 3326 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3326 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:10:58,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3326 Valid, 1999 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 16:10:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48045 states. [2022-11-21 16:11:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48045 to 26207. [2022-11-21 16:11:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26207 states, 26206 states have (on average 1.2753949477218958) internal successors, (33423), 26206 states have internal predecessors, (33423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:11:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26207 states to 26207 states and 33423 transitions. [2022-11-21 16:11:06,307 INFO L78 Accepts]: Start accepts. Automaton has 26207 states and 33423 transitions. Word has length 86 [2022-11-21 16:11:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:11:06,308 INFO L495 AbstractCegarLoop]: Abstraction has 26207 states and 33423 transitions. [2022-11-21 16:11:06,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.678571428571429) internal successors, (215), 27 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:11:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 26207 states and 33423 transitions. [2022-11-21 16:11:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-21 16:11:06,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:06,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:06,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:11:06,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:11:06,536 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -537738683, now seen corresponding path program 1 times [2022-11-21 16:11:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:11:06,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668655459] [2022-11-21 16:11:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:06,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:11:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:11:07,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:11:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668655459] [2022-11-21 16:11:07,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668655459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:11:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599525091] [2022-11-21 16:11:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:07,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:11:07,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:11:07,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:11:07,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:11:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:07,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:11:07,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:11:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:11:08,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:11:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:11:09,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599525091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:11:09,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:11:09,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-21 16:11:09,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879993474] [2022-11-21 16:11:09,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:11:09,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:11:09,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:11:09,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:11:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:11:09,494 INFO L87 Difference]: Start difference. First operand 26207 states and 33423 transitions. Second operand has 21 states, 21 states have (on average 9.380952380952381) internal successors, (197), 20 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:11:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:11:33,433 INFO L93 Difference]: Finished difference Result 92406 states and 116920 transitions. [2022-11-21 16:11:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:11:33,434 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.380952380952381) internal successors, (197), 20 states have internal predecessors, (197), 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 86 [2022-11-21 16:11:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:11:33,527 INFO L225 Difference]: With dead ends: 92406 [2022-11-21 16:11:33,527 INFO L226 Difference]: Without dead ends: 69994 [2022-11-21 16:11:33,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:11:33,544 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 1066 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:11:33,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 603 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:11:33,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69994 states. [2022-11-21 16:11:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69994 to 52942. [2022-11-21 16:11:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52942 states, 52941 states have (on average 1.2568519672843355) internal successors, (66539), 52941 states have internal predecessors, (66539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:11:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52942 states to 52942 states and 66539 transitions. [2022-11-21 16:11:49,270 INFO L78 Accepts]: Start accepts. Automaton has 52942 states and 66539 transitions. Word has length 86 [2022-11-21 16:11:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:11:49,270 INFO L495 AbstractCegarLoop]: Abstraction has 52942 states and 66539 transitions. [2022-11-21 16:11:49,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.380952380952381) internal successors, (197), 20 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:11:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 52942 states and 66539 transitions. [2022-11-21 16:11:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-21 16:11:49,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:49,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:49,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:11:49,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-21 16:11:49,475 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash -277784370, now seen corresponding path program 1 times [2022-11-21 16:11:49,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:11:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084972683] [2022-11-21 16:11:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:49,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:11:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:11:50,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:11:50,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084972683] [2022-11-21 16:11:50,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084972683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:11:50,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38033033] [2022-11-21 16:11:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:50,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:11:50,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:11:50,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:11:50,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_553c39d1-366d-4951-ab7c-01789f887e01/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:11:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:50,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:11:50,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:11:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:11:51,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:11:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:11:53,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38033033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:11:53,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:11:53,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-21 16:11:53,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595112131] [2022-11-21 16:11:53,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:11:53,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 16:11:53,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:11:53,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 16:11:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:11:53,599 INFO L87 Difference]: Start difference. First operand 52942 states and 66539 transitions. Second operand has 28 states, 28 states have (on average 8.642857142857142) internal successors, (242), 28 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:12:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:21,965 INFO L93 Difference]: Finished difference Result 117731 states and 145973 transitions. [2022-11-21 16:12:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:12:21,966 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.642857142857142) internal successors, (242), 28 states have internal predecessors, (242), 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 87 [2022-11-21 16:12:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:22,066 INFO L225 Difference]: With dead ends: 117731 [2022-11-21 16:12:22,067 INFO L226 Difference]: Without dead ends: 68386 [2022-11-21 16:12:22,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=514, Invalid=1648, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 16:12:22,098 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 1217 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:22,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 811 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:12:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68386 states.