./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.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_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/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_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/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_68a777c4-d193-4cc6-aa09-c459d94fb431/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 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 --- 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 19:52:44,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:52:44,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:52:44,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:52:44,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:52:44,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:52:44,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:52:44,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:52:44,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:52:44,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:52:44,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:52:44,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:52:44,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:52:44,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:52:44,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:52:44,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:52:44,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:52:44,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:52:44,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:52:44,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:52:44,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:52:44,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:52:44,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:52:44,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:52:44,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:52:44,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:52:44,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:52:44,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:52:44,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:52:44,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:52:44,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:52:44,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:52:44,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:52:44,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:52:44,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:52:44,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:52:44,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:52:44,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:52:44,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:52:44,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:52:44,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:52:44,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:52:44,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:52:44,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:52:44,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:52:44,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:52:44,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:52:44,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:52:44,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:52:44,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:52:44,433 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:52:44,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:52:44,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:52:44,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:52:44,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:52:44,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:52:44,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:52:44,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:52:44,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:52:44,436 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:52:44,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:52:44,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:52:44,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:52:44,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:52:44,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:52:44,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:52:44,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:44,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:52:44,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:52:44,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:52:44,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:52:44,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:52:44,440 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:52:44,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:52:44,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:52:44,441 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_68a777c4-d193-4cc6-aa09-c459d94fb431/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 [2022-11-02 19:52:44,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:52:44,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:52:44,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:52:44,844 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:52:44,845 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:52:44,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-02 19:52:44,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/data/7aafd4c31/7e4b471ced0c4644be9f6963f1601dd7/FLAG3a531883e [2022-11-02 19:52:45,576 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:52:45,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-02 19:52:45,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/data/7aafd4c31/7e4b471ced0c4644be9f6963f1601dd7/FLAG3a531883e [2022-11-02 19:52:45,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/data/7aafd4c31/7e4b471ced0c4644be9f6963f1601dd7 [2022-11-02 19:52:45,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:52:45,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:52:45,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:45,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:52:45,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:52:45,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:45" (1/1) ... [2022-11-02 19:52:45,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2d2049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:45, skipping insertion in model container [2022-11-02 19:52:45,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:45" (1/1) ... [2022-11-02 19:52:45,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:52:45,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:52:46,486 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_68a777c4-d193-4cc6-aa09-c459d94fb431/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-02 19:52:46,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:46,599 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:52:46,705 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_68a777c4-d193-4cc6-aa09-c459d94fb431/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-02 19:52:46,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:46,827 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:52:46,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46 WrapperNode [2022-11-02 19:52:46,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:46,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:46,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:52:46,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:52:46,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:46,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:46,994 INFO L138 Inliner]: procedures = 126, calls = 203, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 969 [2022-11-02 19:52:47,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:47,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:52:47,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:52:47,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:52:47,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,091 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:52:47,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:52:47,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:52:47,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:52:47,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (1/1) ... [2022-11-02 19:52:47,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:47,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:47,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:52:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:52:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-02 19:52:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-02 19:52:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-02 19:52:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-02 19:52:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-02 19:52:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-02 19:52:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-02 19:52:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-02 19:52:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-02 19:52:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-02 19:52:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-02 19:52:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-02 19:52:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-02 19:52:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-02 19:52:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-02 19:52:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-02 19:52:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-02 19:52:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-02 19:52:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-02 19:52:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:52:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-02 19:52:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-02 19:52:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-02 19:52:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-02 19:52:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-02 19:52:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-02 19:52:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-02 19:52:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-02 19:52:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-02 19:52:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-02 19:52:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-02 19:52:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-02 19:52:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-02 19:52:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-02 19:52:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-02 19:52:47,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-02 19:52:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:52:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-02 19:52:47,228 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-02 19:52:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:52:47,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:52:47,548 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:52:47,551 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:52:48,567 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:52:48,578 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:52:48,578 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:52:48,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:48 BoogieIcfgContainer [2022-11-02 19:52:48,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:52:48,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:52:48,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:52:48,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:52:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:52:45" (1/3) ... [2022-11-02 19:52:48,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeff8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:48, skipping insertion in model container [2022-11-02 19:52:48,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:46" (2/3) ... [2022-11-02 19:52:48,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeff8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:48, skipping insertion in model container [2022-11-02 19:52:48,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:48" (3/3) ... [2022-11-02 19:52:48,592 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product16.cil.c [2022-11-02 19:52:48,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:52:48,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:52:48,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:52:48,696 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;@49f7d918, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:52:48,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:52:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 242 states have (on average 1.5206611570247934) internal successors, (368), 246 states have internal predecessors, (368), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-02 19:52:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 19:52:48,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:48,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-02 19:52:48,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:48,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1457342358, now seen corresponding path program 1 times [2022-11-02 19:52:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:48,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639161356] [2022-11-02 19:52:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:52:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:52:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:52:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 19:52:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 19:52:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 19:52:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 19:52:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 19:52:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 19:52:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 19:52:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 19:52:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 19:52:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 19:52:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 19:52:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 19:52:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 19:52:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:49,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639161356] [2022-11-02 19:52:49,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639161356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:49,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861111572] [2022-11-02 19:52:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:49,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:49,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:49,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:52:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:50,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 19:52:50,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 19:52:50,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:50,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861111572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:50,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:50,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-02 19:52:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852954795] [2022-11-02 19:52:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:50,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 19:52:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:50,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 19:52:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:52:50,351 INFO L87 Difference]: Start difference. First operand has 311 states, 242 states have (on average 1.5206611570247934) internal successors, (368), 246 states have internal predecessors, (368), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:52:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:50,436 INFO L93 Difference]: Finished difference Result 468 states and 686 transitions. [2022-11-02 19:52:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 19:52:50,439 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2022-11-02 19:52:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:50,455 INFO L225 Difference]: With dead ends: 468 [2022-11-02 19:52:50,456 INFO L226 Difference]: Without dead ends: 304 [2022-11-02 19:52:50,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:52:50,465 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:50,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-02 19:52:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-11-02 19:52:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 236 states have (on average 1.5127118644067796) internal successors, (357), 239 states have internal predecessors, (357), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-02 19:52:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 454 transitions. [2022-11-02 19:52:50,545 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 454 transitions. Word has length 114 [2022-11-02 19:52:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:50,548 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 454 transitions. [2022-11-02 19:52:50,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:52:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 454 transitions. [2022-11-02 19:52:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-02 19:52:50,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:50,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-02 19:52:50,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:50,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 19:52:50,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2099522680, now seen corresponding path program 1 times [2022-11-02 19:52:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:50,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823863243] [2022-11-02 19:52:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:52:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:52:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:52:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 19:52:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 19:52:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 19:52:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 19:52:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 19:52:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 19:52:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:52:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 19:52:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 19:52:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 19:52:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 19:52:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 19:52:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 19:52:51,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:51,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823863243] [2022-11-02 19:52:51,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823863243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158195164] [2022-11-02 19:52:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:51,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:51,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:51,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:51,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:52:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:51,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 19:52:51,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 19:52:51,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:51,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158195164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:51,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-02 19:52:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865679522] [2022-11-02 19:52:51,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:51,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:51,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:51,907 INFO L87 Difference]: Start difference. First operand 304 states and 454 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:52:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:51,961 INFO L93 Difference]: Finished difference Result 458 states and 667 transitions. [2022-11-02 19:52:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:51,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2022-11-02 19:52:51,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:51,970 INFO L225 Difference]: With dead ends: 458 [2022-11-02 19:52:51,986 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 19:52:51,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:51,990 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:51,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 902 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:51,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 19:52:52,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2022-11-02 19:52:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 238 states have (on average 1.5084033613445378) internal successors, (359), 241 states have internal predecessors, (359), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-02 19:52:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 456 transitions. [2022-11-02 19:52:52,040 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 456 transitions. Word has length 115 [2022-11-02 19:52:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:52,041 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 456 transitions. [2022-11-02 19:52:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:52:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 456 transitions. [2022-11-02 19:52:52,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-02 19:52:52,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:52,046 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 19:52:52,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:52,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:52,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2071202257, now seen corresponding path program 1 times [2022-11-02 19:52:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:52,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708195624] [2022-11-02 19:52:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:52,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:52:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:52:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:52:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 19:52:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 19:52:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 19:52:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 19:52:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 19:52:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 19:52:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 19:52:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 19:52:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 19:52:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 19:52:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 19:52:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 19:52:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:52:52,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:52,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708195624] [2022-11-02 19:52:52,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708195624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:52,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100306564] [2022-11-02 19:52:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:52,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:52,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:52,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:52,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:52:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:53,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 19:52:53,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:53,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100306564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:53,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:53,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-02 19:52:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652914403] [2022-11-02 19:52:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:53,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:53,126 INFO L87 Difference]: Start difference. First operand 306 states and 456 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:52:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:53,196 INFO L93 Difference]: Finished difference Result 642 states and 971 transitions. [2022-11-02 19:52:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:53,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2022-11-02 19:52:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:53,206 INFO L225 Difference]: With dead ends: 642 [2022-11-02 19:52:53,215 INFO L226 Difference]: Without dead ends: 363 [2022-11-02 19:52:53,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:52:53,220 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 107 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:53,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 878 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-02 19:52:53,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 355. [2022-11-02 19:52:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 276 states have (on average 1.5253623188405796) internal successors, (421), 279 states have internal predecessors, (421), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-02 19:52:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 540 transitions. [2022-11-02 19:52:53,280 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 540 transitions. Word has length 121 [2022-11-02 19:52:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:53,280 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 540 transitions. [2022-11-02 19:52:53,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:52:53,281 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 540 transitions. [2022-11-02 19:52:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 19:52:53,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:53,285 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 19:52:53,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:53,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:53,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash -562023997, now seen corresponding path program 1 times [2022-11-02 19:52:53,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:53,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250337350] [2022-11-02 19:52:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:52:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:52:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:52:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 19:52:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 19:52:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 19:52:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 19:52:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 19:52:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:52:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 19:52:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 19:52:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 19:52:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 19:52:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 19:52:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 19:52:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:52:53,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:53,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250337350] [2022-11-02 19:52:53,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250337350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678688942] [2022-11-02 19:52:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:53,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:53,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:53,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:53,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:52:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:54,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:52:54,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 19:52:54,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:54,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678688942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:54,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:54,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-02 19:52:54,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493794524] [2022-11-02 19:52:54,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:54,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:54,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:54,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:52:54,324 INFO L87 Difference]: Start difference. First operand 355 states and 540 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:52:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:54,450 INFO L93 Difference]: Finished difference Result 701 states and 1070 transitions. [2022-11-02 19:52:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:52:54,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 122 [2022-11-02 19:52:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:54,457 INFO L225 Difference]: With dead ends: 701 [2022-11-02 19:52:54,457 INFO L226 Difference]: Without dead ends: 357 [2022-11-02 19:52:54,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:52:54,466 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 125 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:54,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1635 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-02 19:52:54,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2022-11-02 19:52:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 277 states have (on average 1.523465703971119) internal successors, (422), 281 states have internal predecessors, (422), 60 states have call successors, (60), 18 states have call predecessors, (60), 19 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2022-11-02 19:52:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 543 transitions. [2022-11-02 19:52:54,520 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 543 transitions. Word has length 122 [2022-11-02 19:52:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:54,520 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 543 transitions. [2022-11-02 19:52:54,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:52:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 543 transitions. [2022-11-02 19:52:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 19:52:54,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:54,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-02 19:52:54,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:54,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:54,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1627432574, now seen corresponding path program 1 times [2022-11-02 19:52:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:54,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163472220] [2022-11-02 19:52:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:52:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:52:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:52:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:52:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 19:52:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 19:52:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 19:52:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 19:52:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 19:52:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 19:52:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 19:52:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 19:52:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 19:52:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 19:52:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 19:52:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 19:52:55,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163472220] [2022-11-02 19:52:55,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163472220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:52:55,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514477638] [2022-11-02 19:52:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:55,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:55,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:55,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:55,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 19:52:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:52:55,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 19:52:55,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:55,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514477638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:55,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:52:55,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-02 19:52:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490526437] [2022-11-02 19:52:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:55,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:52:55,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:52:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:52:55,572 INFO L87 Difference]: Start difference. First operand 357 states and 543 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:52:55,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:55,679 INFO L93 Difference]: Finished difference Result 703 states and 1075 transitions. [2022-11-02 19:52:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:52:55,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2022-11-02 19:52:55,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:55,686 INFO L225 Difference]: With dead ends: 703 [2022-11-02 19:52:55,687 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 19:52:55,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:52:55,691 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 124 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:55,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1624 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 19:52:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-11-02 19:52:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 278 states have (on average 1.5215827338129497) internal successors, (423), 283 states have internal predecessors, (423), 60 states have call successors, (60), 18 states have call predecessors, (60), 20 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2022-11-02 19:52:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 549 transitions. [2022-11-02 19:52:55,738 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 549 transitions. Word has length 123 [2022-11-02 19:52:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:55,738 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 549 transitions. [2022-11-02 19:52:55,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:52:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 549 transitions. [2022-11-02 19:52:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 19:52:55,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:55,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:55,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:55,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:55,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:55,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash 563223923, now seen corresponding path program 1 times [2022-11-02 19:52:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:55,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444297236] [2022-11-02 19:52:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:52:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:52:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:52:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:52:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:52:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 19:52:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:52:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 19:52:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 19:52:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 19:52:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 19:52:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 19:52:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 19:52:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 19:52:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 19:52:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:52:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:56,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444297236] [2022-11-02 19:52:56,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444297236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:56,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:56,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:52:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823027972] [2022-11-02 19:52:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:52:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:52:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:52:56,281 INFO L87 Difference]: Start difference. First operand 359 states and 549 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:52:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:59,245 INFO L93 Difference]: Finished difference Result 844 states and 1289 transitions. [2022-11-02 19:52:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:52:59,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2022-11-02 19:52:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:59,254 INFO L225 Difference]: With dead ends: 844 [2022-11-02 19:52:59,254 INFO L226 Difference]: Without dead ends: 508 [2022-11-02 19:52:59,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:52:59,258 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1047 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:59,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1380 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 19:52:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-02 19:52:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 359. [2022-11-02 19:52:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 278 states have (on average 1.5215827338129497) internal successors, (423), 283 states have internal predecessors, (423), 60 states have call successors, (60), 18 states have call predecessors, (60), 20 states have return successors, (65), 59 states have call predecessors, (65), 59 states have call successors, (65) [2022-11-02 19:52:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 548 transitions. [2022-11-02 19:52:59,345 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 548 transitions. Word has length 124 [2022-11-02 19:52:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:59,346 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 548 transitions. [2022-11-02 19:52:59,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:52:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 548 transitions. [2022-11-02 19:52:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-02 19:52:59,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:59,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:59,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:52:59,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:52:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash 997695056, now seen corresponding path program 2 times [2022-11-02 19:52:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:59,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546885431] [2022-11-02 19:52:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:52:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:52:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:52:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:52:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:52:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:52:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 19:52:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:52:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 19:52:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 19:52:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 19:52:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 19:52:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 19:52:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 19:52:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 19:52:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:52:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:59,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546885431] [2022-11-02 19:52:59,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546885431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:59,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:59,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:52:59,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900276279] [2022-11-02 19:52:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:59,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:52:59,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:52:59,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:52:59,682 INFO L87 Difference]: Start difference. First operand 359 states and 548 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:53:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:02,401 INFO L93 Difference]: Finished difference Result 846 states and 1292 transitions. [2022-11-02 19:53:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:53:02,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2022-11-02 19:53:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:02,406 INFO L225 Difference]: With dead ends: 846 [2022-11-02 19:53:02,406 INFO L226 Difference]: Without dead ends: 510 [2022-11-02 19:53:02,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:53:02,409 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1042 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:02,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1381 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 19:53:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-02 19:53:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 361. [2022-11-02 19:53:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 279 states have (on average 1.5197132616487454) internal successors, (424), 285 states have internal predecessors, (424), 60 states have call successors, (60), 18 states have call predecessors, (60), 21 states have return successors, (67), 59 states have call predecessors, (67), 59 states have call successors, (67) [2022-11-02 19:53:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 551 transitions. [2022-11-02 19:53:02,468 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 551 transitions. Word has length 125 [2022-11-02 19:53:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:02,470 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 551 transitions. [2022-11-02 19:53:02,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:53:02,471 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 551 transitions. [2022-11-02 19:53:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 19:53:02,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:02,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:02,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:53:02,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:02,476 INFO L85 PathProgramCache]: Analyzing trace with hash -438814996, now seen corresponding path program 1 times [2022-11-02 19:53:02,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:02,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850796409] [2022-11-02 19:53:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:02,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 19:53:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 19:53:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 19:53:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 19:53:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-02 19:53:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 19:53:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 19:53:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 19:53:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 19:53:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 19:53:02,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850796409] [2022-11-02 19:53:02,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850796409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:02,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:02,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:53:02,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813179314] [2022-11-02 19:53:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:02,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:53:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:53:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:53:02,838 INFO L87 Difference]: Start difference. First operand 361 states and 551 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:53:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:05,473 INFO L93 Difference]: Finished difference Result 846 states and 1291 transitions. [2022-11-02 19:53:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:53:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-11-02 19:53:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:05,478 INFO L225 Difference]: With dead ends: 846 [2022-11-02 19:53:05,479 INFO L226 Difference]: Without dead ends: 510 [2022-11-02 19:53:05,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:53:05,482 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1045 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:05,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 1380 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 19:53:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-02 19:53:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 361. [2022-11-02 19:53:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 279 states have (on average 1.5197132616487454) internal successors, (424), 285 states have internal predecessors, (424), 60 states have call successors, (60), 18 states have call predecessors, (60), 21 states have return successors, (67), 59 states have call predecessors, (67), 59 states have call successors, (67) [2022-11-02 19:53:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 551 transitions. [2022-11-02 19:53:05,549 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 551 transitions. Word has length 126 [2022-11-02 19:53:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:05,550 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 551 transitions. [2022-11-02 19:53:05,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:53:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 551 transitions. [2022-11-02 19:53:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 19:53:05,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:05,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:05,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:53:05,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:05,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1979089070, now seen corresponding path program 1 times [2022-11-02 19:53:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:05,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480009761] [2022-11-02 19:53:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 19:53:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 19:53:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 19:53:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 19:53:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-02 19:53:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 19:53:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 19:53:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 19:53:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 19:53:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 19:53:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:05,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480009761] [2022-11-02 19:53:05,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480009761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:05,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:05,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 19:53:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516088389] [2022-11-02 19:53:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 19:53:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 19:53:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:53:05,924 INFO L87 Difference]: Start difference. First operand 361 states and 551 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-02 19:53:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:09,356 INFO L93 Difference]: Finished difference Result 844 states and 1286 transitions. [2022-11-02 19:53:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:53:09,356 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 126 [2022-11-02 19:53:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:09,360 INFO L225 Difference]: With dead ends: 844 [2022-11-02 19:53:09,361 INFO L226 Difference]: Without dead ends: 510 [2022-11-02 19:53:09,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:53:09,368 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1154 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:09,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1677 Invalid, 3928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 19:53:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-02 19:53:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 361. [2022-11-02 19:53:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 279 states have (on average 1.5197132616487454) internal successors, (424), 285 states have internal predecessors, (424), 60 states have call successors, (60), 18 states have call predecessors, (60), 21 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2022-11-02 19:53:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 550 transitions. [2022-11-02 19:53:09,416 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 550 transitions. Word has length 126 [2022-11-02 19:53:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:09,418 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 550 transitions. [2022-11-02 19:53:09,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-02 19:53:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 550 transitions. [2022-11-02 19:53:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 19:53:09,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:09,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:09,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 19:53:09,422 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1233453961, now seen corresponding path program 2 times [2022-11-02 19:53:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:09,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990058342] [2022-11-02 19:53:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 19:53:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 19:53:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 19:53:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 19:53:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 19:53:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 19:53:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 19:53:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 19:53:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 19:53:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 19:53:09,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:09,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990058342] [2022-11-02 19:53:09,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990058342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:09,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:09,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 19:53:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457819401] [2022-11-02 19:53:09,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:09,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 19:53:09,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 19:53:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:53:09,778 INFO L87 Difference]: Start difference. First operand 361 states and 550 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-02 19:53:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:13,041 INFO L93 Difference]: Finished difference Result 846 states and 1292 transitions. [2022-11-02 19:53:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:53:13,041 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 127 [2022-11-02 19:53:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:13,046 INFO L225 Difference]: With dead ends: 846 [2022-11-02 19:53:13,046 INFO L226 Difference]: Without dead ends: 512 [2022-11-02 19:53:13,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-02 19:53:13,049 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1149 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:13,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 1678 Invalid, 3956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3509 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-02 19:53:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-02 19:53:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 363. [2022-11-02 19:53:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.5178571428571428) internal successors, (425), 287 states have internal predecessors, (425), 60 states have call successors, (60), 18 states have call predecessors, (60), 22 states have return successors, (71), 59 states have call predecessors, (71), 59 states have call successors, (71) [2022-11-02 19:53:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 556 transitions. [2022-11-02 19:53:13,094 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 556 transitions. Word has length 127 [2022-11-02 19:53:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:13,095 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 556 transitions. [2022-11-02 19:53:13,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-02 19:53:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 556 transitions. [2022-11-02 19:53:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-02 19:53:13,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:13,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:13,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 19:53:13,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash -540905305, now seen corresponding path program 1 times [2022-11-02 19:53:13,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:13,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641774762] [2022-11-02 19:53:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 19:53:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 19:53:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:53:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 19:53:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 19:53:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 19:53:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 19:53:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 19:53:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 19:53:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-02 19:53:13,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:13,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641774762] [2022-11-02 19:53:13,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641774762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:13,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:13,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 19:53:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282079363] [2022-11-02 19:53:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:13,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:53:13,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:53:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:53:13,334 INFO L87 Difference]: Start difference. First operand 363 states and 556 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:53:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:15,626 INFO L93 Difference]: Finished difference Result 848 states and 1295 transitions. [2022-11-02 19:53:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:53:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2022-11-02 19:53:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:15,631 INFO L225 Difference]: With dead ends: 848 [2022-11-02 19:53:15,631 INFO L226 Difference]: Without dead ends: 512 [2022-11-02 19:53:15,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:53:15,633 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1044 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:15,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1375 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 19:53:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-02 19:53:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 363. [2022-11-02 19:53:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.5178571428571428) internal successors, (425), 287 states have internal predecessors, (425), 60 states have call successors, (60), 18 states have call predecessors, (60), 22 states have return successors, (71), 59 states have call predecessors, (71), 59 states have call successors, (71) [2022-11-02 19:53:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 556 transitions. [2022-11-02 19:53:15,681 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 556 transitions. Word has length 128 [2022-11-02 19:53:15,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:15,682 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 556 transitions. [2022-11-02 19:53:15,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-02 19:53:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 556 transitions. [2022-11-02 19:53:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-02 19:53:15,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:15,685 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:15,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 19:53:15,686 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1338225641, now seen corresponding path program 1 times [2022-11-02 19:53:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:15,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561072721] [2022-11-02 19:53:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:15,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 19:53:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 19:53:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:53:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 19:53:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 19:53:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 19:53:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 19:53:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 19:53:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 19:53:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:15,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561072721] [2022-11-02 19:53:15,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561072721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:53:15,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839115162] [2022-11-02 19:53:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:15,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:15,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:15,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:15,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 19:53:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:16,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:53:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:16,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:16,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839115162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:16,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:53:16,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-11-02 19:53:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080045298] [2022-11-02 19:53:16,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 19:53:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 19:53:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:53:16,413 INFO L87 Difference]: Start difference. First operand 363 states and 556 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-02 19:53:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:18,913 INFO L93 Difference]: Finished difference Result 1015 states and 1619 transitions. [2022-11-02 19:53:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:53:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 128 [2022-11-02 19:53:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:18,921 INFO L225 Difference]: With dead ends: 1015 [2022-11-02 19:53:18,921 INFO L226 Difference]: Without dead ends: 864 [2022-11-02 19:53:18,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:53:18,925 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1497 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:18,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1726 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 19:53:18,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-11-02 19:53:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 691. [2022-11-02 19:53:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 544 states have (on average 1.5863970588235294) internal successors, (863), 551 states have internal predecessors, (863), 124 states have call successors, (124), 18 states have call predecessors, (124), 22 states have return successors, (145), 123 states have call predecessors, (145), 123 states have call successors, (145) [2022-11-02 19:53:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1132 transitions. [2022-11-02 19:53:19,027 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1132 transitions. Word has length 128 [2022-11-02 19:53:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:19,028 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1132 transitions. [2022-11-02 19:53:19,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-02 19:53:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1132 transitions. [2022-11-02 19:53:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 19:53:19,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:19,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:19,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:19,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68a777c4-d193-4cc6-aa09-c459d94fb431/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:19,250 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash 942632716, now seen corresponding path program 1 times [2022-11-02 19:53:19,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:19,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639404145] [2022-11-02 19:53:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:19,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 19:53:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 19:53:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 19:53:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 19:53:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 19:53:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 19:53:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 19:53:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 19:53:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 19:53:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:19,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:19,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639404145] [2022-11-02 19:53:19,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639404145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:19,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:19,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:19,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684567879] [2022-11-02 19:53:19,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:19,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:19,442 INFO L87 Difference]: Start difference. First operand 691 states and 1132 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:21,496 INFO L93 Difference]: Finished difference Result 1796 states and 2990 transitions. [2022-11-02 19:53:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-11-02 19:53:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:21,505 INFO L225 Difference]: With dead ends: 1796 [2022-11-02 19:53:21,505 INFO L226 Difference]: Without dead ends: 1173 [2022-11-02 19:53:21,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:21,510 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 1038 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:21,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1281 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 19:53:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-02 19:53:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1016. [2022-11-02 19:53:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 805 states have (on average 1.6) internal successors, (1288), 812 states have internal predecessors, (1288), 188 states have call successors, (188), 18 states have call predecessors, (188), 22 states have return successors, (219), 187 states have call predecessors, (219), 187 states have call successors, (219) [2022-11-02 19:53:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1695 transitions. [2022-11-02 19:53:21,644 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1695 transitions. Word has length 134 [2022-11-02 19:53:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:21,644 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1695 transitions. [2022-11-02 19:53:21,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1695 transitions. [2022-11-02 19:53:21,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 19:53:21,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:21,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:21,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 19:53:21,654 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash -594659831, now seen corresponding path program 1 times [2022-11-02 19:53:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:21,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263341843] [2022-11-02 19:53:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 19:53:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 19:53:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 19:53:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 19:53:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 19:53:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 19:53:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 19:53:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 19:53:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 19:53:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:21,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:21,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263341843] [2022-11-02 19:53:21,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263341843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:21,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:21,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043381616] [2022-11-02 19:53:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:21,819 INFO L87 Difference]: Start difference. First operand 1016 states and 1695 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:23,878 INFO L93 Difference]: Finished difference Result 2576 states and 4339 transitions. [2022-11-02 19:53:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:23,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2022-11-02 19:53:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:23,892 INFO L225 Difference]: With dead ends: 2576 [2022-11-02 19:53:23,892 INFO L226 Difference]: Without dead ends: 1681 [2022-11-02 19:53:23,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:23,898 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1036 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:23,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 1235 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 19:53:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2022-11-02 19:53:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1524. [2022-11-02 19:53:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1218 states have (on average 1.6083743842364533) internal successors, (1959), 1225 states have internal predecessors, (1959), 283 states have call successors, (283), 18 states have call predecessors, (283), 22 states have return successors, (314), 282 states have call predecessors, (314), 282 states have call successors, (314) [2022-11-02 19:53:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2556 transitions. [2022-11-02 19:53:24,118 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2556 transitions. Word has length 135 [2022-11-02 19:53:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:24,118 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 2556 transitions. [2022-11-02 19:53:24,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2556 transitions. [2022-11-02 19:53:24,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-02 19:53:24,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:24,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:24,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 19:53:24,130 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1006624502, now seen corresponding path program 1 times [2022-11-02 19:53:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:24,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927614889] [2022-11-02 19:53:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:24,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:53:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 19:53:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 19:53:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 19:53:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 19:53:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 19:53:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 19:53:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 19:53:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-02 19:53:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:24,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927614889] [2022-11-02 19:53:24,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927614889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:24,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:24,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907263935] [2022-11-02 19:53:24,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:24,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:24,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:24,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:24,293 INFO L87 Difference]: Start difference. First operand 1524 states and 2556 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:26,429 INFO L93 Difference]: Finished difference Result 3728 states and 6348 transitions. [2022-11-02 19:53:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-11-02 19:53:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:26,447 INFO L225 Difference]: With dead ends: 3728 [2022-11-02 19:53:26,447 INFO L226 Difference]: Without dead ends: 2450 [2022-11-02 19:53:26,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:26,455 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1034 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:26,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1225 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 19:53:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-11-02 19:53:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2293. [2022-11-02 19:53:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 1864 states have (on average 1.6148068669527897) internal successors, (3010), 1871 states have internal predecessors, (3010), 406 states have call successors, (406), 18 states have call predecessors, (406), 22 states have return successors, (453), 405 states have call predecessors, (453), 405 states have call successors, (453) [2022-11-02 19:53:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3869 transitions. [2022-11-02 19:53:26,828 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3869 transitions. Word has length 136 [2022-11-02 19:53:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:26,829 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 3869 transitions. [2022-11-02 19:53:26,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3869 transitions. [2022-11-02 19:53:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-02 19:53:26,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:26,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:26,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 19:53:26,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash 995832232, now seen corresponding path program 1 times [2022-11-02 19:53:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:26,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669240596] [2022-11-02 19:53:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:26,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 19:53:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:53:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 19:53:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 19:53:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 19:53:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 19:53:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 19:53:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 19:53:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 19:53:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:27,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:27,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669240596] [2022-11-02 19:53:27,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669240596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:27,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:27,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496024369] [2022-11-02 19:53:27,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:27,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:27,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:27,039 INFO L87 Difference]: Start difference. First operand 2293 states and 3869 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:29,144 INFO L93 Difference]: Finished difference Result 5522 states and 9482 transitions. [2022-11-02 19:53:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:29,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2022-11-02 19:53:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:29,171 INFO L225 Difference]: With dead ends: 5522 [2022-11-02 19:53:29,171 INFO L226 Difference]: Without dead ends: 3679 [2022-11-02 19:53:29,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:29,181 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1032 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:29,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1225 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 19:53:29,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2022-11-02 19:53:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3522. [2022-11-02 19:53:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 2914 states have (on average 1.6187371310912835) internal successors, (4717), 2921 states have internal predecessors, (4717), 585 states have call successors, (585), 18 states have call predecessors, (585), 22 states have return successors, (658), 584 states have call predecessors, (658), 584 states have call successors, (658) [2022-11-02 19:53:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 5960 transitions. [2022-11-02 19:53:29,643 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 5960 transitions. Word has length 137 [2022-11-02 19:53:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:29,644 INFO L495 AbstractCegarLoop]: Abstraction has 3522 states and 5960 transitions. [2022-11-02 19:53:29,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 5960 transitions. [2022-11-02 19:53:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-02 19:53:29,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:29,663 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:29,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 19:53:29,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:29,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:29,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1069788114, now seen corresponding path program 1 times [2022-11-02 19:53:29,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:29,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494654115] [2022-11-02 19:53:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:29,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 19:53:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 19:53:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 19:53:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 19:53:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 19:53:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 19:53:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 19:53:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-02 19:53:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 19:53:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:29,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494654115] [2022-11-02 19:53:29,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494654115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:29,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:29,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010684172] [2022-11-02 19:53:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:29,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:29,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:29,822 INFO L87 Difference]: Start difference. First operand 3522 states and 5960 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:32,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:32,164 INFO L93 Difference]: Finished difference Result 8470 states and 14629 transitions. [2022-11-02 19:53:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:32,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-02 19:53:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:32,205 INFO L225 Difference]: With dead ends: 8470 [2022-11-02 19:53:32,206 INFO L226 Difference]: Without dead ends: 5710 [2022-11-02 19:53:32,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:32,218 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 1030 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:32,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1246 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 19:53:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2022-11-02 19:53:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 5553. [2022-11-02 19:53:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 4569 states have (on average 1.6128255635806523) internal successors, (7369), 4576 states have internal predecessors, (7369), 961 states have call successors, (961), 18 states have call predecessors, (961), 22 states have return successors, (1078), 960 states have call predecessors, (1078), 960 states have call successors, (1078) [2022-11-02 19:53:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 9408 transitions. [2022-11-02 19:53:33,023 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 9408 transitions. Word has length 138 [2022-11-02 19:53:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:33,023 INFO L495 AbstractCegarLoop]: Abstraction has 5553 states and 9408 transitions. [2022-11-02 19:53:33,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 9408 transitions. [2022-11-02 19:53:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-02 19:53:33,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:33,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:33,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 19:53:33,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1962010244, now seen corresponding path program 1 times [2022-11-02 19:53:33,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:33,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067290824] [2022-11-02 19:53:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:33,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 19:53:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 19:53:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 19:53:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 19:53:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 19:53:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 19:53:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-02 19:53:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 19:53:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 19:53:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:33,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:33,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067290824] [2022-11-02 19:53:33,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067290824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:33,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:33,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961609355] [2022-11-02 19:53:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:33,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:33,204 INFO L87 Difference]: Start difference. First operand 5553 states and 9408 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:36,147 INFO L93 Difference]: Finished difference Result 13807 states and 23850 transitions. [2022-11-02 19:53:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-11-02 19:53:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:36,227 INFO L225 Difference]: With dead ends: 13807 [2022-11-02 19:53:36,228 INFO L226 Difference]: Without dead ends: 9393 [2022-11-02 19:53:36,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:36,249 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 1028 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:36,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 1253 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 19:53:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9393 states. [2022-11-02 19:53:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9393 to 9236. [2022-11-02 19:53:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 7646 states have (on average 1.6106460894585404) internal successors, (12315), 7653 states have internal predecessors, (12315), 1567 states have call successors, (1567), 18 states have call predecessors, (1567), 22 states have return successors, (1762), 1566 states have call predecessors, (1762), 1566 states have call successors, (1762) [2022-11-02 19:53:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 15644 transitions. [2022-11-02 19:53:37,402 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 15644 transitions. Word has length 139 [2022-11-02 19:53:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:37,403 INFO L495 AbstractCegarLoop]: Abstraction has 9236 states and 15644 transitions. [2022-11-02 19:53:37,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 15644 transitions. [2022-11-02 19:53:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-02 19:53:37,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:37,436 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:37,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 19:53:37,436 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1591987616, now seen corresponding path program 1 times [2022-11-02 19:53:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:37,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069737690] [2022-11-02 19:53:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 19:53:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 19:53:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 19:53:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 19:53:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 19:53:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 19:53:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 19:53:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 19:53:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-02 19:53:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:37,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:37,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069737690] [2022-11-02 19:53:37,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069737690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:37,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:37,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:37,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048139509] [2022-11-02 19:53:37,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:37,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:37,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:37,590 INFO L87 Difference]: Start difference. First operand 9236 states and 15644 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:41,029 INFO L93 Difference]: Finished difference Result 23991 states and 41396 transitions. [2022-11-02 19:53:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:41,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2022-11-02 19:53:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:41,113 INFO L225 Difference]: With dead ends: 23991 [2022-11-02 19:53:41,114 INFO L226 Difference]: Without dead ends: 16346 [2022-11-02 19:53:41,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:41,141 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 1026 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:41,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1281 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 19:53:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16346 states. [2022-11-02 19:53:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16346 to 16189. [2022-11-02 19:53:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16189 states, 13396 states have (on average 1.601746790086593) internal successors, (21457), 13403 states have internal predecessors, (21457), 2770 states have call successors, (2770), 18 states have call predecessors, (2770), 22 states have return successors, (3109), 2769 states have call predecessors, (3109), 2769 states have call successors, (3109) [2022-11-02 19:53:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16189 states to 16189 states and 27336 transitions. [2022-11-02 19:53:42,619 INFO L78 Accepts]: Start accepts. Automaton has 16189 states and 27336 transitions. Word has length 140 [2022-11-02 19:53:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:42,620 INFO L495 AbstractCegarLoop]: Abstraction has 16189 states and 27336 transitions. [2022-11-02 19:53:42,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16189 states and 27336 transitions. [2022-11-02 19:53:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 19:53:42,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:42,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:42,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 19:53:42,665 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:42,666 INFO L85 PathProgramCache]: Analyzing trace with hash -341142269, now seen corresponding path program 1 times [2022-11-02 19:53:42,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:42,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317911463] [2022-11-02 19:53:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:42,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 19:53:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 19:53:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 19:53:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 19:53:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 19:53:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 19:53:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 19:53:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 19:53:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-02 19:53:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:42,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:42,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317911463] [2022-11-02 19:53:42,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317911463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:42,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:42,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:42,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319689577] [2022-11-02 19:53:42,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:42,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:42,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:42,923 INFO L87 Difference]: Start difference. First operand 16189 states and 27336 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:47,769 INFO L93 Difference]: Finished difference Result 42957 states and 73995 transitions. [2022-11-02 19:53:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-02 19:53:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:47,922 INFO L225 Difference]: With dead ends: 42957 [2022-11-02 19:53:47,922 INFO L226 Difference]: Without dead ends: 29001 [2022-11-02 19:53:47,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:47,965 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1024 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:47,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1228 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 19:53:47,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29001 states. [2022-11-02 19:53:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29001 to 28844. [2022-11-02 19:53:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28844 states, 24012 states have (on average 1.597576211894053) internal successors, (38361), 24019 states have internal predecessors, (38361), 4809 states have call successors, (4809), 18 states have call predecessors, (4809), 22 states have return successors, (5422), 4808 states have call predecessors, (5422), 4808 states have call successors, (5422) [2022-11-02 19:53:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28844 states to 28844 states and 48592 transitions. [2022-11-02 19:53:51,705 INFO L78 Accepts]: Start accepts. Automaton has 28844 states and 48592 transitions. Word has length 141 [2022-11-02 19:53:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:51,706 INFO L495 AbstractCegarLoop]: Abstraction has 28844 states and 48592 transitions. [2022-11-02 19:53:51,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 28844 states and 48592 transitions. [2022-11-02 19:53:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 19:53:51,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:51,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:53:51,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 19:53:51,778 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:53:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:51,779 INFO L85 PathProgramCache]: Analyzing trace with hash -196282466, now seen corresponding path program 1 times [2022-11-02 19:53:51,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:51,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686116909] [2022-11-02 19:53:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:51,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:53:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:53:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:53:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:53:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:53:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:53:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:53:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 19:53:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 19:53:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-02 19:53:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 19:53:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 19:53:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 19:53:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-02 19:53:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-02 19:53:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:53:51,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:51,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686116909] [2022-11-02 19:53:51,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686116909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:51,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:51,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:53:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623496749] [2022-11-02 19:53:51,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:51,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:53:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:53:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:53:51,971 INFO L87 Difference]: Start difference. First operand 28844 states and 48592 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:53:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:58,567 INFO L93 Difference]: Finished difference Result 78719 states and 134754 transitions. [2022-11-02 19:53:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:53:58,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-11-02 19:53:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:58,828 INFO L225 Difference]: With dead ends: 78719 [2022-11-02 19:53:58,828 INFO L226 Difference]: Without dead ends: 52880 [2022-11-02 19:53:59,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:53:59,101 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1022 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:59,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1236 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 19:53:59,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52880 states. [2022-11-02 19:54:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52880 to 52723. [2022-11-02 19:54:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52723 states, 44176 states have (on average 1.5920409272002898) internal successors, (70330), 44183 states have internal predecessors, (70330), 8524 states have call successors, (8524), 18 states have call predecessors, (8524), 22 states have return successors, (9669), 8523 states have call predecessors, (9669), 8523 states have call successors, (9669) [2022-11-02 19:54:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52723 states to 52723 states and 88523 transitions. [2022-11-02 19:54:05,032 INFO L78 Accepts]: Start accepts. Automaton has 52723 states and 88523 transitions. Word has length 142 [2022-11-02 19:54:05,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:05,033 INFO L495 AbstractCegarLoop]: Abstraction has 52723 states and 88523 transitions. [2022-11-02 19:54:05,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 19:54:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 52723 states and 88523 transitions. [2022-11-02 19:54:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-02 19:54:05,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:05,104 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 19:54:05,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 19:54:05,105 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash -220998141, now seen corresponding path program 1 times [2022-11-02 19:54:05,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:05,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926639895] [2022-11-02 19:54:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:54:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:54:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 19:54:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:54:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:54:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:54:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 19:54:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 19:54:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 19:54:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 19:54:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 19:54:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 19:54:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 19:54:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 19:54:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-02 19:54:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 19:54:05,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:05,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926639895] [2022-11-02 19:54:05,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926639895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:05,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:05,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925224524] [2022-11-02 19:54:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:05,271 INFO L87 Difference]: Start difference. First operand 52723 states and 88523 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)