./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc --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 1ff9f2437b71e741f48db30c539bfb90441ca24112fe46e7e8bfb68c243b80ed --- 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-5e519f3 [2022-11-02 21:10:39,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:39,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:39,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:39,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:39,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:39,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:39,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:39,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:39,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:39,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:39,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:39,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:39,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:39,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:39,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:39,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:39,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:39,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:39,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:39,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:39,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:39,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:39,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:39,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:39,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:39,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:39,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:39,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:39,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:39,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:39,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:39,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:39,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:39,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:39,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:39,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:39,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:39,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:39,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:39,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:39,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:10:39,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:39,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:39,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:39,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:39,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:39,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:39,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:39,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:39,361 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:39,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:39,363 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:10:39,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:10:39,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:10:39,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:39,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:10:39,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:39,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:10:39,364 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:10:39,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:10:39,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:39,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:10:39,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:39,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:39,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:39,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:39,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:39,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:39,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:10:39,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:10:39,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:10:39,367 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:10:39,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:10:39,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:10:39,367 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_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ff9f2437b71e741f48db30c539bfb90441ca24112fe46e7e8bfb68c243b80ed [2022-11-02 21:10:39,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:39,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:39,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:39,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:39,756 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:39,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem12_label31.c [2022-11-02 21:10:39,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/data/0c02115a3/90c1c66715cd4868bd39789e07cc8b8c/FLAG555a1fc30 [2022-11-02 21:10:40,630 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:40,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/sv-benchmarks/c/eca-rers2012/Problem12_label31.c [2022-11-02 21:10:40,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/data/0c02115a3/90c1c66715cd4868bd39789e07cc8b8c/FLAG555a1fc30 [2022-11-02 21:10:40,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/data/0c02115a3/90c1c66715cd4868bd39789e07cc8b8c [2022-11-02 21:10:40,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:40,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:40,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:40,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:40,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:40,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d2a29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:40, skipping insertion in model container [2022-11-02 21:10:40,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:40" (1/1) ... [2022-11-02 21:10:40,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:40,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:41,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/sv-benchmarks/c/eca-rers2012/Problem12_label31.c[7776,7789] [2022-11-02 21:10:42,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:42,390 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:42,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/sv-benchmarks/c/eca-rers2012/Problem12_label31.c[7776,7789] [2022-11-02 21:10:43,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:43,146 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:43,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43 WrapperNode [2022-11-02 21:10:43,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:43,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:43,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:43,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:43,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,611 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-02 21:10:43,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:43,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:43,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:43,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:43,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:43,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:44,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:44,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:44,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:44,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:44,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (1/1) ... [2022-11-02 21:10:44,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:44,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:44,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:44,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:10:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:10:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:44,456 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:44,484 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:50,169 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:50,189 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:50,189 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:10:50,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:50 BoogieIcfgContainer [2022-11-02 21:10:50,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:50,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:50,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:50,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:50,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:40" (1/3) ... [2022-11-02 21:10:50,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d8a46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:50, skipping insertion in model container [2022-11-02 21:10:50,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:43" (2/3) ... [2022-11-02 21:10:50,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d8a46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:50, skipping insertion in model container [2022-11-02 21:10:50,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:50" (3/3) ... [2022-11-02 21:10:50,206 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2022-11-02 21:10:50,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:50,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:10:50,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:50,350 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;@325ac57c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:50,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:10:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 21:10:50,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:50,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:50,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2022-11-02 21:10:50,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:50,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919892336] [2022-11-02 21:10:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:51,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919892336] [2022-11-02 21:10:51,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919892336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:51,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:51,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:10:51,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483863275] [2022-11-02 21:10:51,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:10:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:10:51,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:10:51,147 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:01,041 INFO L93 Difference]: Finished difference Result 3142 states and 6130 transitions. [2022-11-02 21:11:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:01,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-02 21:11:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:01,081 INFO L225 Difference]: With dead ends: 3142 [2022-11-02 21:11:01,082 INFO L226 Difference]: Without dead ends: 2257 [2022-11-02 21:11:01,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:01,097 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2187 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:01,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 765 Invalid, 6780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1281 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-02 21:11:01,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-11-02 21:11:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-11-02 21:11:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5749113475177305) internal successors, (3553), 2256 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3553 transitions. [2022-11-02 21:11:01,284 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3553 transitions. Word has length 63 [2022-11-02 21:11:01,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:01,286 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3553 transitions. [2022-11-02 21:11:01,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3553 transitions. [2022-11-02 21:11:01,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 21:11:01,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:01,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:01,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:01,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -195694461, now seen corresponding path program 1 times [2022-11-02 21:11:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:01,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147331703] [2022-11-02 21:11:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147331703] [2022-11-02 21:11:01,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147331703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:01,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:01,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349569175] [2022-11-02 21:11:01,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:01,906 INFO L87 Difference]: Start difference. First operand 2257 states and 3553 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:07,609 INFO L93 Difference]: Finished difference Result 6051 states and 9916 transitions. [2022-11-02 21:11:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:07,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-02 21:11:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:07,625 INFO L225 Difference]: With dead ends: 6051 [2022-11-02 21:11:07,625 INFO L226 Difference]: Without dead ends: 3759 [2022-11-02 21:11:07,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:07,632 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:07,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 688 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 21:11:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-11-02 21:11:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3008. [2022-11-02 21:11:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4319920186232125) internal successors, (4306), 3007 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4306 transitions. [2022-11-02 21:11:07,720 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4306 transitions. Word has length 134 [2022-11-02 21:11:07,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:07,724 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4306 transitions. [2022-11-02 21:11:07,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4306 transitions. [2022-11-02 21:11:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-02 21:11:07,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:07,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:07,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:11:07,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1299452643, now seen corresponding path program 1 times [2022-11-02 21:11:07,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:07,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166962516] [2022-11-02 21:11:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:07,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-02 21:11:08,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:08,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166962516] [2022-11-02 21:11:08,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166962516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:08,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:08,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:11:08,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110028236] [2022-11-02 21:11:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:08,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:08,180 INFO L87 Difference]: Start difference. First operand 3008 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:12,139 INFO L93 Difference]: Finished difference Result 8267 states and 11519 transitions. [2022-11-02 21:11:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:12,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 273 [2022-11-02 21:11:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:12,157 INFO L225 Difference]: With dead ends: 8267 [2022-11-02 21:11:12,157 INFO L226 Difference]: Without dead ends: 5261 [2022-11-02 21:11:12,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:12,162 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:12,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 21:11:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2022-11-02 21:11:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2022-11-02 21:11:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.1982889733840305) internal successors, (6303), 5260 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6303 transitions. [2022-11-02 21:11:12,265 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6303 transitions. Word has length 273 [2022-11-02 21:11:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:12,266 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 6303 transitions. [2022-11-02 21:11:12,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6303 transitions. [2022-11-02 21:11:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-02 21:11:12,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:12,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:12,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:11:12,273 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash 454134594, now seen corresponding path program 1 times [2022-11-02 21:11:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:12,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41964180] [2022-11-02 21:11:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-02 21:11:12,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:12,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41964180] [2022-11-02 21:11:12,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41964180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:12,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:12,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102761672] [2022-11-02 21:11:12,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:12,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:12,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:12,855 INFO L87 Difference]: Start difference. First operand 5261 states and 6303 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:17,795 INFO L93 Difference]: Finished difference Result 12061 states and 15068 transitions. [2022-11-02 21:11:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 275 [2022-11-02 21:11:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:17,818 INFO L225 Difference]: With dead ends: 12061 [2022-11-02 21:11:17,818 INFO L226 Difference]: Without dead ends: 7516 [2022-11-02 21:11:17,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:17,825 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 776 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:17,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 327 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 21:11:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2022-11-02 21:11:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7514. [2022-11-02 21:11:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.1812857713296951) internal successors, (8875), 7513 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 8875 transitions. [2022-11-02 21:11:17,959 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 8875 transitions. Word has length 275 [2022-11-02 21:11:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:17,960 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 8875 transitions. [2022-11-02 21:11:17,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:17,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 8875 transitions. [2022-11-02 21:11:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-02 21:11:17,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:17,969 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:17,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:11:17,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -7459175, now seen corresponding path program 1 times [2022-11-02 21:11:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:17,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949813974] [2022-11-02 21:11:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:11:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:19,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949813974] [2022-11-02 21:11:19,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949813974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:19,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:19,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:19,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306063723] [2022-11-02 21:11:19,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:19,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:19,426 INFO L87 Difference]: Start difference. First operand 7514 states and 8875 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:23,580 INFO L93 Difference]: Finished difference Result 16528 states and 20146 transitions. [2022-11-02 21:11:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:23,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 352 [2022-11-02 21:11:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:23,616 INFO L225 Difference]: With dead ends: 16528 [2022-11-02 21:11:23,616 INFO L226 Difference]: Without dead ends: 9767 [2022-11-02 21:11:23,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:23,626 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 826 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:23,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 139 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 21:11:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-02 21:11:23,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-02 21:11:23,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.207352037681753) internal successors, (11791), 9766 states have internal predecessors, (11791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 11791 transitions. [2022-11-02 21:11:23,806 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 11791 transitions. Word has length 352 [2022-11-02 21:11:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:23,806 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 11791 transitions. [2022-11-02 21:11:23,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 11791 transitions. [2022-11-02 21:11:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-02 21:11:23,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:23,816 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:23,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:11:23,816 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash -570188715, now seen corresponding path program 1 times [2022-11-02 21:11:23,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:23,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055778924] [2022-11-02 21:11:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:23,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:11:24,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:24,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055778924] [2022-11-02 21:11:24,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055778924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:24,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:24,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:24,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011453899] [2022-11-02 21:11:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:24,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:24,798 INFO L87 Difference]: Start difference. First operand 9767 states and 11791 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:28,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:28,691 INFO L93 Difference]: Finished difference Result 21034 states and 25744 transitions. [2022-11-02 21:11:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 376 [2022-11-02 21:11:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:28,718 INFO L225 Difference]: With dead ends: 21034 [2022-11-02 21:11:28,719 INFO L226 Difference]: Without dead ends: 12020 [2022-11-02 21:11:28,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:28,730 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:28,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 21:11:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2022-11-02 21:11:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 12020. [2022-11-02 21:11:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.1926116981446044) internal successors, (14334), 12019 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14334 transitions. [2022-11-02 21:11:28,927 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14334 transitions. Word has length 376 [2022-11-02 21:11:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:28,928 INFO L495 AbstractCegarLoop]: Abstraction has 12020 states and 14334 transitions. [2022-11-02 21:11:28,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:28,929 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14334 transitions. [2022-11-02 21:11:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-02 21:11:28,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:28,939 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:11:28,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1437175494, now seen corresponding path program 1 times [2022-11-02 21:11:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:28,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343935416] [2022-11-02 21:11:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:28,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 21:11:29,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:29,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343935416] [2022-11-02 21:11:29,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343935416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:29,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:29,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:29,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535087769] [2022-11-02 21:11:29,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:29,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:29,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:29,505 INFO L87 Difference]: Start difference. First operand 12020 states and 14334 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:33,952 INFO L93 Difference]: Finished difference Result 33801 states and 40725 transitions. [2022-11-02 21:11:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2022-11-02 21:11:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:33,999 INFO L225 Difference]: With dead ends: 33801 [2022-11-02 21:11:34,000 INFO L226 Difference]: Without dead ends: 22534 [2022-11-02 21:11:34,014 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 [2022-11-02 21:11:34,015 INFO L413 NwaCegarLoop]: 1322 mSDtfsCounter, 636 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:34,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1329 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 21:11:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2022-11-02 21:11:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 21783. [2022-11-02 21:11:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 21782 states have (on average 1.1774400881461757) internal successors, (25647), 21782 states have internal predecessors, (25647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 25647 transitions. [2022-11-02 21:11:34,350 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 25647 transitions. Word has length 390 [2022-11-02 21:11:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:34,350 INFO L495 AbstractCegarLoop]: Abstraction has 21783 states and 25647 transitions. [2022-11-02 21:11:34,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 25647 transitions. [2022-11-02 21:11:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-02 21:11:34,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:34,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:11:34,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:11:34,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1354237895, now seen corresponding path program 1 times [2022-11-02 21:11:34,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:34,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856769280] [2022-11-02 21:11:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:34,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 83 proven. 99 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-02 21:11:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856769280] [2022-11-02 21:11:35,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856769280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636002615] [2022-11-02 21:11:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:35,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:35,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:35,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:35,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:11:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:35,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:11:35,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-02 21:11:35,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:35,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636002615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:35,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:11:35,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-02 21:11:35,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589095976] [2022-11-02 21:11:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:35,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:35,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:35,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:11:35,764 INFO L87 Difference]: Start difference. First operand 21783 states and 25647 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:40,190 INFO L93 Difference]: Finished difference Result 51074 states and 60998 transitions. [2022-11-02 21:11:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:40,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 391 [2022-11-02 21:11:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:40,271 INFO L225 Difference]: With dead ends: 51074 [2022-11-02 21:11:40,271 INFO L226 Difference]: Without dead ends: 30044 [2022-11-02 21:11:40,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:11:40,419 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 697 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:40,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1319 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 21:11:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30044 states. [2022-11-02 21:11:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30044 to 29293. [2022-11-02 21:11:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29293 states, 29292 states have (on average 1.179810187081797) internal successors, (34559), 29292 states have internal predecessors, (34559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29293 states to 29293 states and 34559 transitions. [2022-11-02 21:11:40,873 INFO L78 Accepts]: Start accepts. Automaton has 29293 states and 34559 transitions. Word has length 391 [2022-11-02 21:11:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:40,874 INFO L495 AbstractCegarLoop]: Abstraction has 29293 states and 34559 transitions. [2022-11-02 21:11:40,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 29293 states and 34559 transitions. [2022-11-02 21:11:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-02 21:11:40,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:40,882 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:40,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:41,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 21:11:41,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1088687996, now seen corresponding path program 1 times [2022-11-02 21:11:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:41,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936864549] [2022-11-02 21:11:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-02 21:11:41,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936864549] [2022-11-02 21:11:41,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936864549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:41,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:41,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:41,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256652547] [2022-11-02 21:11:41,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:41,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:41,513 INFO L87 Difference]: Start difference. First operand 29293 states and 34559 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:46,093 INFO L93 Difference]: Finished difference Result 83367 states and 99024 transitions. [2022-11-02 21:11:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:46,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 394 [2022-11-02 21:11:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:46,180 INFO L225 Difference]: With dead ends: 83367 [2022-11-02 21:11:46,180 INFO L226 Difference]: Without dead ends: 50321 [2022-11-02 21:11:46,207 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 [2022-11-02 21:11:46,208 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 740 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:46,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1266 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 21:11:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50321 states. [2022-11-02 21:11:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50321 to 49570. [2022-11-02 21:11:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49570 states, 49569 states have (on average 1.1349432104742883) internal successors, (56258), 49569 states have internal predecessors, (56258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49570 states to 49570 states and 56258 transitions. [2022-11-02 21:11:47,023 INFO L78 Accepts]: Start accepts. Automaton has 49570 states and 56258 transitions. Word has length 394 [2022-11-02 21:11:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:47,025 INFO L495 AbstractCegarLoop]: Abstraction has 49570 states and 56258 transitions. [2022-11-02 21:11:47,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 49570 states and 56258 transitions. [2022-11-02 21:11:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-02 21:11:47,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:47,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:47,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:11:47,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash -635464298, now seen corresponding path program 1 times [2022-11-02 21:11:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:47,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559400868] [2022-11-02 21:11:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:47,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 21:11:47,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:47,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559400868] [2022-11-02 21:11:47,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559400868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:47,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:47,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:47,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670334731] [2022-11-02 21:11:47,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:47,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:47,472 INFO L87 Difference]: Start difference. First operand 49570 states and 56258 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:52,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:52,165 INFO L93 Difference]: Finished difference Result 98387 states and 111758 transitions. [2022-11-02 21:11:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:52,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 457 [2022-11-02 21:11:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:52,229 INFO L225 Difference]: With dead ends: 98387 [2022-11-02 21:11:52,229 INFO L226 Difference]: Without dead ends: 49570 [2022-11-02 21:11:52,258 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 [2022-11-02 21:11:52,259 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 684 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:52,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 277 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 21:11:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2022-11-02 21:11:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 49570. [2022-11-02 21:11:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49570 states, 49569 states have (on average 1.1302830398031027) internal successors, (56027), 49569 states have internal predecessors, (56027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49570 states to 49570 states and 56027 transitions. [2022-11-02 21:11:52,938 INFO L78 Accepts]: Start accepts. Automaton has 49570 states and 56027 transitions. Word has length 457 [2022-11-02 21:11:52,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:52,940 INFO L495 AbstractCegarLoop]: Abstraction has 49570 states and 56027 transitions. [2022-11-02 21:11:52,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 49570 states and 56027 transitions. [2022-11-02 21:11:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-02 21:11:52,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:52,952 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:52,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:11:52,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:52,954 INFO L85 PathProgramCache]: Analyzing trace with hash 124592779, now seen corresponding path program 1 times [2022-11-02 21:11:52,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:52,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542252163] [2022-11-02 21:11:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:52,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 592 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-02 21:11:53,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542252163] [2022-11-02 21:11:53,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542252163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:53,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:53,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:53,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22439773] [2022-11-02 21:11:53,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:53,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:53,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:53,883 INFO L87 Difference]: Start difference. First operand 49570 states and 56027 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:58,547 INFO L93 Difference]: Finished difference Result 99138 states and 112065 transitions. [2022-11-02 21:11:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:11:58,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 462 [2022-11-02 21:11:58,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:58,608 INFO L225 Difference]: With dead ends: 99138 [2022-11-02 21:11:58,608 INFO L226 Difference]: Without dead ends: 50321 [2022-11-02 21:11:58,639 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 [2022-11-02 21:11:58,640 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 705 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:58,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 211 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 21:11:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50321 states. [2022-11-02 21:11:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50321 to 48068. [2022-11-02 21:11:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48068 states, 48067 states have (on average 1.127301475024445) internal successors, (54186), 48067 states have internal predecessors, (54186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48068 states to 48068 states and 54186 transitions. [2022-11-02 21:11:59,395 INFO L78 Accepts]: Start accepts. Automaton has 48068 states and 54186 transitions. Word has length 462 [2022-11-02 21:11:59,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:59,395 INFO L495 AbstractCegarLoop]: Abstraction has 48068 states and 54186 transitions. [2022-11-02 21:11:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 48068 states and 54186 transitions. [2022-11-02 21:11:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-02 21:11:59,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:59,407 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:11:59,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash 158542987, now seen corresponding path program 1 times [2022-11-02 21:11:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511367922] [2022-11-02 21:11:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-02 21:11:59,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:59,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511367922] [2022-11-02 21:11:59,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511367922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:59,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:59,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:11:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506553240] [2022-11-02 21:11:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:59,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:11:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:11:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:11:59,923 INFO L87 Difference]: Start difference. First operand 48068 states and 54186 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:04,411 INFO L93 Difference]: Finished difference Result 117913 states and 134631 transitions. [2022-11-02 21:12:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:04,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 473 [2022-11-02 21:12:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:04,494 INFO L225 Difference]: With dead ends: 117913 [2022-11-02 21:12:04,494 INFO L226 Difference]: Without dead ends: 70598 [2022-11-02 21:12:04,627 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 [2022-11-02 21:12:04,628 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 716 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:04,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1249 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 21:12:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70598 states. [2022-11-02 21:12:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70598 to 68345. [2022-11-02 21:12:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68345 states, 68344 states have (on average 1.1130165047407234) internal successors, (76068), 68344 states have internal predecessors, (76068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68345 states to 68345 states and 76068 transitions. [2022-11-02 21:12:05,582 INFO L78 Accepts]: Start accepts. Automaton has 68345 states and 76068 transitions. Word has length 473 [2022-11-02 21:12:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:05,583 INFO L495 AbstractCegarLoop]: Abstraction has 68345 states and 76068 transitions. [2022-11-02 21:12:05,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 68345 states and 76068 transitions. [2022-11-02 21:12:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-02 21:12:05,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:05,596 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:05,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:12:05,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash -592902464, now seen corresponding path program 1 times [2022-11-02 21:12:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:05,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208959187] [2022-11-02 21:12:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-02 21:12:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:06,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208959187] [2022-11-02 21:12:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208959187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:06,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:06,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:12:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567802062] [2022-11-02 21:12:06,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:06,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:06,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:06,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:06,076 INFO L87 Difference]: Start difference. First operand 68345 states and 76068 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:11,041 INFO L93 Difference]: Finished difference Result 181748 states and 202532 transitions. [2022-11-02 21:12:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 500 [2022-11-02 21:12:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:11,184 INFO L225 Difference]: With dead ends: 181748 [2022-11-02 21:12:11,184 INFO L226 Difference]: Without dead ends: 114156 [2022-11-02 21:12:11,209 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 [2022-11-02 21:12:11,210 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 662 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:11,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1258 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 21:12:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114156 states. [2022-11-02 21:12:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114156 to 105144. [2022-11-02 21:12:12,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105144 states, 105143 states have (on average 1.0944618281768639) internal successors, (115075), 105143 states have internal predecessors, (115075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105144 states to 105144 states and 115075 transitions. [2022-11-02 21:12:12,928 INFO L78 Accepts]: Start accepts. Automaton has 105144 states and 115075 transitions. Word has length 500 [2022-11-02 21:12:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:12,928 INFO L495 AbstractCegarLoop]: Abstraction has 105144 states and 115075 transitions. [2022-11-02 21:12:12,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 105144 states and 115075 transitions. [2022-11-02 21:12:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-11-02 21:12:12,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:12,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:12,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:12:12,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash -755321508, now seen corresponding path program 1 times [2022-11-02 21:12:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:12,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383237748] [2022-11-02 21:12:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 347 proven. 108 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:12:14,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:14,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383237748] [2022-11-02 21:12:14,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383237748] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:14,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949118253] [2022-11-02 21:12:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:14,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:14,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:14,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:14,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:12:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:12:14,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:12:16,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:16,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949118253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:16,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:12:16,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-02 21:12:16,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996141995] [2022-11-02 21:12:16,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:16,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:16,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:16,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:16,334 INFO L87 Difference]: Start difference. First operand 105144 states and 115075 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:22,907 INFO L93 Difference]: Finished difference Result 210286 states and 230146 transitions. [2022-11-02 21:12:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:12:22,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 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 553 [2022-11-02 21:12:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:23,055 INFO L225 Difference]: With dead ends: 210286 [2022-11-02 21:12:23,056 INFO L226 Difference]: Without dead ends: 105895 [2022-11-02 21:12:23,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:12:23,113 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1252 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4262 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 4959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 4262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:23,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 419 Invalid, 4959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 4262 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-02 21:12:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2022-11-02 21:12:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 105144. [2022-11-02 21:12:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105144 states, 105143 states have (on average 1.0639224674966474) internal successors, (111864), 105143 states have internal predecessors, (111864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105144 states to 105144 states and 111864 transitions. [2022-11-02 21:12:24,723 INFO L78 Accepts]: Start accepts. Automaton has 105144 states and 111864 transitions. Word has length 553 [2022-11-02 21:12:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:24,724 INFO L495 AbstractCegarLoop]: Abstraction has 105144 states and 111864 transitions. [2022-11-02 21:12:24,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,724 INFO L276 IsEmpty]: Start isEmpty. Operand 105144 states and 111864 transitions. [2022-11-02 21:12:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-11-02 21:12:24,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:24,739 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:24,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bc0b16-0bed-41e2-8825-82846a0a6e17/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:24,955 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1402279067, now seen corresponding path program 1 times [2022-11-02 21:12:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:24,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645728541] [2022-11-02 21:12:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:24,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-11-02 21:12:25,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:25,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645728541] [2022-11-02 21:12:25,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645728541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:25,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:25,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:12:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243648983] [2022-11-02 21:12:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:25,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:25,350 INFO L87 Difference]: Start difference. First operand 105144 states and 111864 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:29,945 INFO L93 Difference]: Finished difference Result 226057 states and 240874 transitions. [2022-11-02 21:12:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:29,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 554 [2022-11-02 21:12:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:30,103 INFO L225 Difference]: With dead ends: 226057 [2022-11-02 21:12:30,103 INFO L226 Difference]: Without dead ends: 121666 [2022-11-02 21:12:30,144 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 [2022-11-02 21:12:30,145 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 810 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:30,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1120 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 21:12:30,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121666 states. [2022-11-02 21:12:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121666 to 120164. [2022-11-02 21:12:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120164 states, 120163 states have (on average 1.0606010169519735) internal successors, (127445), 120163 states have internal predecessors, (127445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120164 states to 120164 states and 127445 transitions. [2022-11-02 21:12:32,211 INFO L78 Accepts]: Start accepts. Automaton has 120164 states and 127445 transitions. Word has length 554 [2022-11-02 21:12:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:32,212 INFO L495 AbstractCegarLoop]: Abstraction has 120164 states and 127445 transitions. [2022-11-02 21:12:32,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 120164 states and 127445 transitions. [2022-11-02 21:12:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2022-11-02 21:12:32,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:32,281 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:32,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:12:32,281 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:32,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:32,282 INFO L85 PathProgramCache]: Analyzing trace with hash -64909747, now seen corresponding path program 1 times [2022-11-02 21:12:32,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:32,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433618242] [2022-11-02 21:12:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:32,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1581 backedges. 1219 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-11-02 21:12:33,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:33,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433618242] [2022-11-02 21:12:33,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433618242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:33,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:33,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:12:33,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922587496] [2022-11-02 21:12:33,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:33,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:33,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:33,859 INFO L87 Difference]: Start difference. First operand 120164 states and 127445 transitions. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:39,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:39,595 INFO L93 Difference]: Finished difference Result 283133 states and 301017 transitions. [2022-11-02 21:12:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 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 1038 [2022-11-02 21:12:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:39,779 INFO L225 Difference]: With dead ends: 283133 [2022-11-02 21:12:39,779 INFO L226 Difference]: Without dead ends: 163722 [2022-11-02 21:12:39,808 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 [2022-11-02 21:12:39,810 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 606 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:39,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1364 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 21:12:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163722 states. [2022-11-02 21:12:41,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163722 to 156963. [2022-11-02 21:12:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156963 states, 156962 states have (on average 1.053662669945592) internal successors, (165385), 156962 states have internal predecessors, (165385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156963 states to 156963 states and 165385 transitions. [2022-11-02 21:12:42,027 INFO L78 Accepts]: Start accepts. Automaton has 156963 states and 165385 transitions. Word has length 1038 [2022-11-02 21:12:42,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:42,028 INFO L495 AbstractCegarLoop]: Abstraction has 156963 states and 165385 transitions. [2022-11-02 21:12:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 156963 states and 165385 transitions. [2022-11-02 21:12:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2022-11-02 21:12:42,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:42,110 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:12:42,110 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 876098399, now seen corresponding path program 1 times [2022-11-02 21:12:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:42,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010802771] [2022-11-02 21:12:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1627 backedges. 1225 proven. 0 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2022-11-02 21:12:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:44,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010802771] [2022-11-02 21:12:44,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010802771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:44,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:44,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:12:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991864620] [2022-11-02 21:12:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:44,086 INFO L87 Difference]: Start difference. First operand 156963 states and 165385 transitions. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:48,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:48,991 INFO L93 Difference]: Finished difference Result 319181 states and 336192 transitions. [2022-11-02 21:12:48,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:48,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 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 1063 [2022-11-02 21:12:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:49,167 INFO L225 Difference]: With dead ends: 319181 [2022-11-02 21:12:49,168 INFO L226 Difference]: Without dead ends: 162971 [2022-11-02 21:12:49,212 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 [2022-11-02 21:12:49,213 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 593 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:49,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1260 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 21:12:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162971 states. [2022-11-02 21:12:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162971 to 159216. [2022-11-02 21:12:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159216 states, 159215 states have (on average 1.0525327387494896) internal successors, (167579), 159215 states have internal predecessors, (167579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159216 states to 159216 states and 167579 transitions. [2022-11-02 21:12:51,584 INFO L78 Accepts]: Start accepts. Automaton has 159216 states and 167579 transitions. Word has length 1063 [2022-11-02 21:12:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:51,584 INFO L495 AbstractCegarLoop]: Abstraction has 159216 states and 167579 transitions. [2022-11-02 21:12:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 159216 states and 167579 transitions. [2022-11-02 21:12:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2022-11-02 21:12:51,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:51,646 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:51,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:12:51,647 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash 947020251, now seen corresponding path program 1 times [2022-11-02 21:12:51,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:51,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490413169] [2022-11-02 21:12:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:51,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 1051 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-02 21:12:52,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:52,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490413169] [2022-11-02 21:12:52,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490413169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:52,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:52,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:12:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159208134] [2022-11-02 21:12:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:52,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:12:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:12:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:52,725 INFO L87 Difference]: Start difference. First operand 159216 states and 167579 transitions. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:57,766 INFO L93 Difference]: Finished difference Result 317679 states and 334400 transitions. [2022-11-02 21:12:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:12:57,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 1075 [2022-11-02 21:12:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:57,938 INFO L225 Difference]: With dead ends: 317679 [2022-11-02 21:12:57,938 INFO L226 Difference]: Without dead ends: 159216 [2022-11-02 21:12:57,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:12:57,994 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 680 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:57,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1262 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 21:12:58,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159216 states. [2022-11-02 21:13:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159216 to 158465. [2022-11-02 21:13:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158465 states, 158464 states have (on average 1.0437070880452342) internal successors, (165390), 158464 states have internal predecessors, (165390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158465 states to 158465 states and 165390 transitions. [2022-11-02 21:13:00,412 INFO L78 Accepts]: Start accepts. Automaton has 158465 states and 165390 transitions. Word has length 1075 [2022-11-02 21:13:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:00,413 INFO L495 AbstractCegarLoop]: Abstraction has 158465 states and 165390 transitions. [2022-11-02 21:13:00,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 158465 states and 165390 transitions. [2022-11-02 21:13:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2022-11-02 21:13:00,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:00,477 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:00,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:13:00,478 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 865637920, now seen corresponding path program 1 times [2022-11-02 21:13:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:13:00,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321408626] [2022-11-02 21:13:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:13:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat