./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label13.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_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/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_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/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_3c2210d1-c567-4b52-853c-821bbfa87d74/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 b7385fd88a67a4d51b868c33a4a2a17411348aca1f3bf817148857f9693eef2c --- 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 21:01:51,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:51,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:51,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:51,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:51,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:51,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:51,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:51,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:51,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:51,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:51,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:51,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:51,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:51,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:51,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:51,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:51,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:51,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:51,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:51,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:51,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:51,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:51,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:51,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:51,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:51,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:51,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:51,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:51,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:51,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:51,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:51,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:51,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:51,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:51,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:51,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:51,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:51,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:51,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:51,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:51,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:01:51,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:51,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:51,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:51,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:51,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:51,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:51,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:51,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:51,341 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:51,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:51,342 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:01:51,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:51,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:01:51,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:51,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:51,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:51,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:51,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:01:51,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:51,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:51,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:51,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:51,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:51,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:51,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:51,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:51,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:51,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:51,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:01:51,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:01:51,346 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:51,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:51,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:51,347 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_3c2210d1-c567-4b52-853c-821bbfa87d74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7385fd88a67a4d51b868c33a4a2a17411348aca1f3bf817148857f9693eef2c [2022-11-02 21:01:51,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:51,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:51,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:51,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:51,699 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:51,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem13_label13.c [2022-11-02 21:01:51,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/data/5ae4cf496/a8ca109a8a41474590c1c531dcd484f0/FLAG35944f0f2 [2022-11-02 21:01:52,839 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:52,840 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/sv-benchmarks/c/eca-rers2012/Problem13_label13.c [2022-11-02 21:01:52,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/data/5ae4cf496/a8ca109a8a41474590c1c531dcd484f0/FLAG35944f0f2 [2022-11-02 21:01:53,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/data/5ae4cf496/a8ca109a8a41474590c1c531dcd484f0 [2022-11-02 21:01:53,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:53,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:53,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:53,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:53,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:53,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:53" (1/1) ... [2022-11-02 21:01:53,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d75344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:53, skipping insertion in model container [2022-11-02 21:01:53,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:53" (1/1) ... [2022-11-02 21:01:53,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:53,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:53,693 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_3c2210d1-c567-4b52-853c-821bbfa87d74/sv-benchmarks/c/eca-rers2012/Problem13_label13.c[8099,8112] [2022-11-02 21:01:54,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:54,871 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:54,918 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_3c2210d1-c567-4b52-853c-821bbfa87d74/sv-benchmarks/c/eca-rers2012/Problem13_label13.c[8099,8112] [2022-11-02 21:01:55,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:55,716 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:55,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55 WrapperNode [2022-11-02 21:01:55,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:55,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:55,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:55,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:55,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:55,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:56,587 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-02 21:01:56,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:56,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:56,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:56,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:56,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:56,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:56,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:56,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:57,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:57,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:57,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:57,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:57,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:57,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:57,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:57,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:57,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (1/1) ... [2022-11-02 21:01:57,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:57,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:57,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:01:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:01:57,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:57,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:57,709 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:57,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:02:04,829 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:02:04,858 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:02:04,858 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:02:04,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:04 BoogieIcfgContainer [2022-11-02 21:02:04,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:02:04,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:02:04,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:02:04,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:02:04,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:53" (1/3) ... [2022-11-02 21:02:04,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f4fa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:04, skipping insertion in model container [2022-11-02 21:02:04,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:55" (2/3) ... [2022-11-02 21:02:04,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f4fa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:04, skipping insertion in model container [2022-11-02 21:02:04,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:04" (3/3) ... [2022-11-02 21:02:04,877 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2022-11-02 21:02:04,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:02:04,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:02:05,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:02:05,047 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;@2062f6cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:02:05,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:02:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 21:02:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 21:02:05,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:05,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:05,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:05,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2022-11-02 21:02:05,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:05,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97959790] [2022-11-02 21:02:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:05,799 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 21:02:05,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:05,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97959790] [2022-11-02 21:02:05,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97959790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:05,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:05,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:05,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104663670] [2022-11-02 21:02:05,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:05,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:05,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:05,851 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:15,677 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-11-02 21:02:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:15,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-02 21:02:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:15,709 INFO L225 Difference]: With dead ends: 3829 [2022-11-02 21:02:15,710 INFO L226 Difference]: Without dead ends: 2664 [2022-11-02 21:02:15,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:15,723 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2676 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:15,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-02 21:02:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-11-02 21:02:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-11-02 21:02:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 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 21:02:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-11-02 21:02:15,926 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 57 [2022-11-02 21:02:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:15,928 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-11-02 21:02:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-11-02 21:02:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-02 21:02:15,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:15,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:15,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:02:15,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1953647055, now seen corresponding path program 1 times [2022-11-02 21:02:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:15,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288025539] [2022-11-02 21:02:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:15,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-02 21:02:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:16,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288025539] [2022-11-02 21:02:16,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288025539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:16,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:16,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:16,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281963364] [2022-11-02 21:02:16,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:16,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:16,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:16,377 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 21:02:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:22,308 INFO L93 Difference]: Finished difference Result 6142 states and 9712 transitions. [2022-11-02 21:02:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:22,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 182 [2022-11-02 21:02:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:22,328 INFO L225 Difference]: With dead ends: 6142 [2022-11-02 21:02:22,328 INFO L226 Difference]: Without dead ends: 4268 [2022-11-02 21:02:22,337 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 21:02:22,340 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:22,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1188 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-02 21:02:22,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-11-02 21:02:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4254. [2022-11-02 21:02:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.3515165765342112) internal successors, (5748), 4253 states have internal predecessors, (5748), 0 states have call successors, (0), 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 21:02:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5748 transitions. [2022-11-02 21:02:22,458 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5748 transitions. Word has length 182 [2022-11-02 21:02:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:22,462 INFO L495 AbstractCegarLoop]: Abstraction has 4254 states and 5748 transitions. [2022-11-02 21:02:22,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 21:02:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5748 transitions. [2022-11-02 21:02:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-02 21:02:22,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:22,472 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, 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 21:02:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:02:22,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1535774173, now seen corresponding path program 1 times [2022-11-02 21:02:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:22,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757785208] [2022-11-02 21:02:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-02 21:02:22,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:22,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757785208] [2022-11-02 21:02:22,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757785208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:22,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:22,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:22,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961442449] [2022-11-02 21:02:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:22,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:22,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:22,914 INFO L87 Difference]: Start difference. First operand 4254 states and 5748 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 21:02:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:27,971 INFO L93 Difference]: Finished difference Result 10897 states and 15274 transitions. [2022-11-02 21:02:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:27,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 224 [2022-11-02 21:02:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:27,999 INFO L225 Difference]: With dead ends: 10897 [2022-11-02 21:02:27,999 INFO L226 Difference]: Without dead ends: 7432 [2022-11-02 21:02:28,004 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 21:02:28,005 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:28,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 955 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 21:02:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2022-11-02 21:02:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7426. [2022-11-02 21:02:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 7425 states have (on average 1.288888888888889) internal successors, (9570), 7425 states have internal predecessors, (9570), 0 states have call successors, (0), 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 21:02:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9570 transitions. [2022-11-02 21:02:28,154 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9570 transitions. Word has length 224 [2022-11-02 21:02:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:28,154 INFO L495 AbstractCegarLoop]: Abstraction has 7426 states and 9570 transitions. [2022-11-02 21:02:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 21:02:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9570 transitions. [2022-11-02 21:02:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-02 21:02:28,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:28,160 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, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:02:28,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:02:28,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:28,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash -424268410, now seen corresponding path program 1 times [2022-11-02 21:02:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:28,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070836574] [2022-11-02 21:02:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-02 21:02:28,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070836574] [2022-11-02 21:02:28,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070836574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:28,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:28,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:28,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264687053] [2022-11-02 21:02:28,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:28,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:28,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:28,489 INFO L87 Difference]: Start difference. First operand 7426 states and 9570 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 21:02:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:33,801 INFO L93 Difference]: Finished difference Result 19619 states and 25904 transitions. [2022-11-02 21:02:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:33,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 238 [2022-11-02 21:02:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:33,905 INFO L225 Difference]: With dead ends: 19619 [2022-11-02 21:02:33,912 INFO L226 Difference]: Without dead ends: 12982 [2022-11-02 21:02:33,920 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 21:02:33,922 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 907 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:33,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 637 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-02 21:02:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2022-11-02 21:02:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12975. [2022-11-02 21:02:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.2719284723292739) internal successors, (16502), 12974 states have internal predecessors, (16502), 0 states have call successors, (0), 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 21:02:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 16502 transitions. [2022-11-02 21:02:34,228 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 16502 transitions. Word has length 238 [2022-11-02 21:02:34,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:34,229 INFO L495 AbstractCegarLoop]: Abstraction has 12975 states and 16502 transitions. [2022-11-02 21:02:34,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 21:02:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 16502 transitions. [2022-11-02 21:02:34,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-02 21:02:34,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:34,236 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, 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] [2022-11-02 21:02:34,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:02:34,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1333823715, now seen corresponding path program 1 times [2022-11-02 21:02:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:34,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262603934] [2022-11-02 21:02:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:34,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-02 21:02:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:34,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262603934] [2022-11-02 21:02:34,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262603934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:34,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:34,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:34,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262317953] [2022-11-02 21:02:34,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:34,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:34,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:34,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:34,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:34,549 INFO L87 Difference]: Start difference. First operand 12975 states and 16502 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 21:02:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:39,526 INFO L93 Difference]: Finished difference Result 36180 states and 46592 transitions. [2022-11-02 21:02:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:39,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 254 [2022-11-02 21:02:39,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:39,573 INFO L225 Difference]: With dead ends: 36180 [2022-11-02 21:02:39,573 INFO L226 Difference]: Without dead ends: 23994 [2022-11-02 21:02:39,583 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 21:02:39,584 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:39,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 21:02:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2022-11-02 21:02:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 22416. [2022-11-02 21:02:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22416 states, 22415 states have (on average 1.211153245594468) internal successors, (27148), 22415 states have internal predecessors, (27148), 0 states have call successors, (0), 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 21:02:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22416 states to 22416 states and 27148 transitions. [2022-11-02 21:02:39,973 INFO L78 Accepts]: Start accepts. Automaton has 22416 states and 27148 transitions. Word has length 254 [2022-11-02 21:02:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:39,975 INFO L495 AbstractCegarLoop]: Abstraction has 22416 states and 27148 transitions. [2022-11-02 21:02:39,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 21:02:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 22416 states and 27148 transitions. [2022-11-02 21:02:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-02 21:02:39,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:39,988 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:02:39,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:02:39,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash 678495218, now seen corresponding path program 1 times [2022-11-02 21:02:39,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561782313] [2022-11-02 21:02:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 21:02:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:40,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561782313] [2022-11-02 21:02:40,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561782313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:40,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:40,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117373366] [2022-11-02 21:02:40,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:40,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:40,364 INFO L87 Difference]: Start difference. First operand 22416 states and 27148 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 21:02:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:45,784 INFO L93 Difference]: Finished difference Result 55858 states and 69068 transitions. [2022-11-02 21:02:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:45,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 297 [2022-11-02 21:02:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:45,851 INFO L225 Difference]: With dead ends: 55858 [2022-11-02 21:02:45,852 INFO L226 Difference]: Without dead ends: 34231 [2022-11-02 21:02:45,874 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 21:02:45,875 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 888 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:45,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-02 21:02:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34231 states. [2022-11-02 21:02:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34231 to 33434. [2022-11-02 21:02:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33434 states, 33433 states have (on average 1.1906200460622738) internal successors, (39806), 33433 states have internal predecessors, (39806), 0 states have call successors, (0), 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 21:02:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33434 states to 33434 states and 39806 transitions. [2022-11-02 21:02:46,547 INFO L78 Accepts]: Start accepts. Automaton has 33434 states and 39806 transitions. Word has length 297 [2022-11-02 21:02:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:46,548 INFO L495 AbstractCegarLoop]: Abstraction has 33434 states and 39806 transitions. [2022-11-02 21:02:46,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 21:02:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 33434 states and 39806 transitions. [2022-11-02 21:02:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 21:02:46,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:46,558 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:46,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:02:46,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1737785822, now seen corresponding path program 1 times [2022-11-02 21:02:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:46,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689458421] [2022-11-02 21:02:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 21:02:47,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:47,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689458421] [2022-11-02 21:02:47,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689458421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:47,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:47,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19896417] [2022-11-02 21:02:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:47,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:47,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:47,028 INFO L87 Difference]: Start difference. First operand 33434 states and 39806 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 21:02:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:57,327 INFO L93 Difference]: Finished difference Result 117460 states and 141039 transitions. [2022-11-02 21:02:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:57,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2022-11-02 21:02:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:57,446 INFO L225 Difference]: With dead ends: 117460 [2022-11-02 21:02:57,447 INFO L226 Difference]: Without dead ends: 84815 [2022-11-02 21:02:57,468 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 21:02:57,469 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1739 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6065 mSolverCounterSat, 1189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 7254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 6065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:57,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 690 Invalid, 7254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 6065 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-02 21:02:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84815 states. [2022-11-02 21:02:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84815 to 83900. [2022-11-02 21:02:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83900 states, 83899 states have (on average 1.1735539160180692) internal successors, (98460), 83899 states have internal predecessors, (98460), 0 states have call successors, (0), 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 21:02:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83900 states to 83900 states and 98460 transitions. [2022-11-02 21:02:58,814 INFO L78 Accepts]: Start accepts. Automaton has 83900 states and 98460 transitions. Word has length 345 [2022-11-02 21:02:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:58,815 INFO L495 AbstractCegarLoop]: Abstraction has 83900 states and 98460 transitions. [2022-11-02 21:02:58,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 21:02:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 83900 states and 98460 transitions. [2022-11-02 21:02:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-02 21:02:58,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:58,825 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, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:02:58,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:02:58,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:58,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:58,826 INFO L85 PathProgramCache]: Analyzing trace with hash -127471989, now seen corresponding path program 1 times [2022-11-02 21:02:58,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:58,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773844114] [2022-11-02 21:02:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:58,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-02 21:02:59,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:59,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773844114] [2022-11-02 21:02:59,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773844114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:59,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:59,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943984369] [2022-11-02 21:02:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:59,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:59,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:59,322 INFO L87 Difference]: Start difference. First operand 83900 states and 98460 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 21:03:04,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:04,887 INFO L93 Difference]: Finished difference Result 156777 states and 185083 transitions. [2022-11-02 21:03:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:04,888 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 354 [2022-11-02 21:03:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:05,030 INFO L225 Difference]: With dead ends: 156777 [2022-11-02 21:03:05,030 INFO L226 Difference]: Without dead ends: 83909 [2022-11-02 21:03:05,268 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 21:03:05,269 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:05,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 21:03:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83909 states. [2022-11-02 21:03:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83909 to 83900. [2022-11-02 21:03:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83900 states, 83899 states have (on average 1.172779174960369) internal successors, (98395), 83899 states have internal predecessors, (98395), 0 states have call successors, (0), 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 21:03:06,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83900 states to 83900 states and 98395 transitions. [2022-11-02 21:03:06,524 INFO L78 Accepts]: Start accepts. Automaton has 83900 states and 98395 transitions. Word has length 354 [2022-11-02 21:03:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:06,524 INFO L495 AbstractCegarLoop]: Abstraction has 83900 states and 98395 transitions. [2022-11-02 21:03:06,525 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 21:03:06,525 INFO L276 IsEmpty]: Start isEmpty. Operand 83900 states and 98395 transitions. [2022-11-02 21:03:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-02 21:03:06,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:06,532 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:06,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:03:06,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:06,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1869300435, now seen corresponding path program 1 times [2022-11-02 21:03:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:06,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367620961] [2022-11-02 21:03:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:06,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 278 proven. 113 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 21:03:09,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:09,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367620961] [2022-11-02 21:03:09,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367620961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:09,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381877602] [2022-11-02 21:03:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:09,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:09,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:09,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:09,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:03:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:09,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:03:09,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 21:03:09,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:09,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381877602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:09,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:03:09,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-02 21:03:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853191575] [2022-11-02 21:03:09,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:09,666 INFO L87 Difference]: Start difference. First operand 83900 states and 98395 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 21:03:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:14,594 INFO L93 Difference]: Finished difference Result 167009 states and 195995 transitions. [2022-11-02 21:03:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:14,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 383 [2022-11-02 21:03:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:14,689 INFO L225 Difference]: With dead ends: 167009 [2022-11-02 21:03:14,690 INFO L226 Difference]: Without dead ends: 83898 [2022-11-02 21:03:14,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:14,720 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:14,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1447 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 21:03:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83898 states. [2022-11-02 21:03:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83898 to 83110. [2022-11-02 21:03:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83110 states, 83109 states have (on average 1.1286142295058297) internal successors, (93798), 83109 states have internal predecessors, (93798), 0 states have call successors, (0), 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 21:03:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83110 states to 83110 states and 93798 transitions. [2022-11-02 21:03:15,941 INFO L78 Accepts]: Start accepts. Automaton has 83110 states and 93798 transitions. Word has length 383 [2022-11-02 21:03:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:15,941 INFO L495 AbstractCegarLoop]: Abstraction has 83110 states and 93798 transitions. [2022-11-02 21:03:15,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 21:03:15,942 INFO L276 IsEmpty]: Start isEmpty. Operand 83110 states and 93798 transitions. [2022-11-02 21:03:15,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-02 21:03:15,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:15,951 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:15,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:03:16,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:16,152 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:16,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash -289451502, now seen corresponding path program 1 times [2022-11-02 21:03:16,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:16,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531229601] [2022-11-02 21:03:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 21:03:16,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:16,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531229601] [2022-11-02 21:03:16,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531229601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:16,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:16,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609619609] [2022-11-02 21:03:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:16,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:16,841 INFO L87 Difference]: Start difference. First operand 83110 states and 93798 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 21:03:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:22,534 INFO L93 Difference]: Finished difference Result 191411 states and 218503 transitions. [2022-11-02 21:03:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:22,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2022-11-02 21:03:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:22,662 INFO L225 Difference]: With dead ends: 191411 [2022-11-02 21:03:22,662 INFO L226 Difference]: Without dead ends: 109090 [2022-11-02 21:03:22,689 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 21:03:22,690 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 892 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:22,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 944 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 21:03:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109090 states. [2022-11-02 21:03:23,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109090 to 107496. [2022-11-02 21:03:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107496 states, 107495 states have (on average 1.13280617703149) internal successors, (121771), 107495 states have internal predecessors, (121771), 0 states have call successors, (0), 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 21:03:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107496 states to 107496 states and 121771 transitions. [2022-11-02 21:03:24,443 INFO L78 Accepts]: Start accepts. Automaton has 107496 states and 121771 transitions. Word has length 413 [2022-11-02 21:03:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:24,445 INFO L495 AbstractCegarLoop]: Abstraction has 107496 states and 121771 transitions. [2022-11-02 21:03:24,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 21:03:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 107496 states and 121771 transitions. [2022-11-02 21:03:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-02 21:03:24,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:24,490 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, 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, 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] [2022-11-02 21:03:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:03:24,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1031117907, now seen corresponding path program 1 times [2022-11-02 21:03:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:24,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750061363] [2022-11-02 21:03:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-02 21:03:24,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:24,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750061363] [2022-11-02 21:03:24,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750061363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:24,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:24,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271796344] [2022-11-02 21:03:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:24,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:24,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:24,890 INFO L87 Difference]: Start difference. First operand 107496 states and 121771 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 21:03:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:30,838 INFO L93 Difference]: Finished difference Result 239402 states and 273697 transitions. [2022-11-02 21:03:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:30,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 451 [2022-11-02 21:03:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:30,984 INFO L225 Difference]: With dead ends: 239402 [2022-11-02 21:03:30,984 INFO L226 Difference]: Without dead ends: 132695 [2022-11-02 21:03:31,023 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 21:03:31,024 INFO L413 NwaCegarLoop]: 1787 mSDtfsCounter, 781 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:31,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1938 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-02 21:03:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132695 states. [2022-11-02 21:03:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132695 to 132678. [2022-11-02 21:03:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132678 states, 132677 states have (on average 1.1164859018518658) internal successors, (148132), 132677 states have internal predecessors, (148132), 0 states have call successors, (0), 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 21:03:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132678 states to 132678 states and 148132 transitions. [2022-11-02 21:03:33,050 INFO L78 Accepts]: Start accepts. Automaton has 132678 states and 148132 transitions. Word has length 451 [2022-11-02 21:03:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:33,051 INFO L495 AbstractCegarLoop]: Abstraction has 132678 states and 148132 transitions. [2022-11-02 21:03:33,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 21:03:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 132678 states and 148132 transitions. [2022-11-02 21:03:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-11-02 21:03:33,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:33,074 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:03:33,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:03:33,075 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:33,075 INFO L85 PathProgramCache]: Analyzing trace with hash 581013402, now seen corresponding path program 1 times [2022-11-02 21:03:33,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:33,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372718834] [2022-11-02 21:03:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:33,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 347 proven. 113 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 21:03:35,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:35,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372718834] [2022-11-02 21:03:35,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372718834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:35,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007531497] [2022-11-02 21:03:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:35,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:35,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:35,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:35,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:03:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:36,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:03:36,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-02 21:03:36,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:36,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007531497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:36,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:03:36,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-02 21:03:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246106231] [2022-11-02 21:03:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:36,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:36,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:36,461 INFO L87 Difference]: Start difference. First operand 132678 states and 148132 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 21:03:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:41,838 INFO L93 Difference]: Finished difference Result 259020 states and 291117 transitions. [2022-11-02 21:03:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:41,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 487 [2022-11-02 21:03:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:42,044 INFO L225 Difference]: With dead ends: 259020 [2022-11-02 21:03:42,044 INFO L226 Difference]: Without dead ends: 142879 [2022-11-02 21:03:42,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:42,105 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1135 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:42,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 389 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 21:03:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142879 states. [2022-11-02 21:03:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142879 to 142879. [2022-11-02 21:03:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142879 states, 142878 states have (on average 1.1109408026428143) internal successors, (158729), 142878 states have internal predecessors, (158729), 0 states have call successors, (0), 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 21:03:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142879 states to 142879 states and 158729 transitions. [2022-11-02 21:03:44,571 INFO L78 Accepts]: Start accepts. Automaton has 142879 states and 158729 transitions. Word has length 487 [2022-11-02 21:03:44,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:44,573 INFO L495 AbstractCegarLoop]: Abstraction has 142879 states and 158729 transitions. [2022-11-02 21:03:44,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 21:03:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 142879 states and 158729 transitions. [2022-11-02 21:03:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2022-11-02 21:03:44,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:44,595 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:44,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 21:03:44,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:03:44,811 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash -777668327, now seen corresponding path program 1 times [2022-11-02 21:03:44,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:44,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635094131] [2022-11-02 21:03:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:44,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 179 proven. 258 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:03:47,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:47,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635094131] [2022-11-02 21:03:47,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635094131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:47,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095696641] [2022-11-02 21:03:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:47,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:47,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:47,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:47,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:03:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:47,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:47,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-02 21:03:48,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:48,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095696641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:48,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:03:48,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-02 21:03:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765676784] [2022-11-02 21:03:48,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:48,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:48,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:48,876 INFO L87 Difference]: Start difference. First operand 142879 states and 158729 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 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 21:03:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:54,130 INFO L93 Difference]: Finished difference Result 273170 states and 304378 transitions. [2022-11-02 21:03:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:54,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 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 522 [2022-11-02 21:03:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:54,325 INFO L225 Difference]: With dead ends: 273170 [2022-11-02 21:03:54,326 INFO L226 Difference]: Without dead ends: 146828 [2022-11-02 21:03:54,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:54,386 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 544 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:54,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1142 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-02 21:03:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146828 states. [2022-11-02 21:03:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146828 to 146818. [2022-11-02 21:03:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146818 states, 146817 states have (on average 1.1091903526158415) internal successors, (162848), 146817 states have internal predecessors, (162848), 0 states have call successors, (0), 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 21:03:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146818 states to 146818 states and 162848 transitions. [2022-11-02 21:03:56,637 INFO L78 Accepts]: Start accepts. Automaton has 146818 states and 162848 transitions. Word has length 522 [2022-11-02 21:03:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:56,638 INFO L495 AbstractCegarLoop]: Abstraction has 146818 states and 162848 transitions. [2022-11-02 21:03:56,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 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 21:03:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 146818 states and 162848 transitions. [2022-11-02 21:03:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-02 21:03:56,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:56,656 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:03:56,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:56,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c2210d1-c567-4b52-853c-821bbfa87d74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:56,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:56,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2017215681, now seen corresponding path program 1 times [2022-11-02 21:03:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:56,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511733376] [2022-11-02 21:03:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-11-02 21:03:57,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:57,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511733376] [2022-11-02 21:03:57,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511733376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:57,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:57,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:57,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670582655] [2022-11-02 21:03:57,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:57,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:57,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:57,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:57,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:57,234 INFO L87 Difference]: Start difference. First operand 146818 states and 162848 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 21:04:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:00,667 INFO L93 Difference]: Finished difference Result 275508 states and 306386 transitions. [2022-11-02 21:04:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 542 [2022-11-02 21:04:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:00,820 INFO L225 Difference]: With dead ends: 275508 [2022-11-02 21:04:00,820 INFO L226 Difference]: Without dead ends: 145227 [2022-11-02 21:04:00,859 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 21:04:00,859 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1633 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:00,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 297 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 21:04:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145227 states. [2022-11-02 21:04:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145227 to 145226. [2022-11-02 21:04:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145226 states, 145225 states have (on average 1.1071647443621966) internal successors, (160788), 145225 states have internal predecessors, (160788), 0 states have call successors, (0), 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 21:04:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145226 states to 145226 states and 160788 transitions. [2022-11-02 21:04:03,379 INFO L78 Accepts]: Start accepts. Automaton has 145226 states and 160788 transitions. Word has length 542 [2022-11-02 21:04:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:03,379 INFO L495 AbstractCegarLoop]: Abstraction has 145226 states and 160788 transitions. [2022-11-02 21:04:03,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 21:04:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 145226 states and 160788 transitions. [2022-11-02 21:04:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2022-11-02 21:04:03,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:03,399 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:04:03,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:04:03,399 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1742141744, now seen corresponding path program 1 times [2022-11-02 21:04:03,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:03,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405872340] [2022-11-02 21:04:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:03,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 848 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-11-02 21:04:03,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:03,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405872340] [2022-11-02 21:04:03,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405872340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:03,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:03,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:03,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293120485] [2022-11-02 21:04:03,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:03,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:03,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:03,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:03,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:03,805 INFO L87 Difference]: Start difference. First operand 145226 states and 160788 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 21:04:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:08,985 INFO L93 Difference]: Finished difference Result 289670 states and 320797 transitions. [2022-11-02 21:04:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:08,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 580 [2022-11-02 21:04:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:09,154 INFO L225 Difference]: With dead ends: 289670 [2022-11-02 21:04:09,154 INFO L226 Difference]: Without dead ends: 145233 [2022-11-02 21:04:09,626 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 21:04:09,628 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 831 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:09,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1434 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 21:04:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145233 states. [2022-11-02 21:04:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145233 to 145219. [2022-11-02 21:04:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145219 states, 145218 states have (on average 1.0820215124846781) internal successors, (157129), 145218 states have internal predecessors, (157129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)