./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN --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 b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 --- 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-6b4ec56 [2022-11-20 11:18:44,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:18:44,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:18:44,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:18:44,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:18:44,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:18:44,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:18:44,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:18:44,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:18:44,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:18:44,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:18:44,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:18:44,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:18:44,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:18:44,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:18:44,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:18:44,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:18:44,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:18:44,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:18:44,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:18:44,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:18:44,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:18:44,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:18:44,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:18:44,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:18:44,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:18:44,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:18:44,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:18:44,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:18:44,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:18:44,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:18:44,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:18:44,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:18:44,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:18:44,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:18:44,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:18:44,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:18:44,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:18:44,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:18:44,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:18:44,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:18:44,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:18:44,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:18:44,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:18:44,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:18:44,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:18:44,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:18:44,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:18:44,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:18:44,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:18:44,552 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:18:44,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:18:44,553 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:18:44,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:18:44,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:18:44,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:18:44,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:18:44,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:18:44,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:18:44,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:18:44,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:18:44,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:18:44,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:18:44,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:18:44,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:18:44,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:18:44,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:18:44,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:18:44,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:18:44,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:18:44,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:18:44,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:18:44,558 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:18:44,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:18:44,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:18:44,559 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_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 [2022-11-20 11:18:44,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:18:44,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:18:44,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:18:44,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:18:44,926 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:18:44,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2022-11-20 11:18:48,802 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:18:49,230 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:18:49,232 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2022-11-20 11:18:49,253 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/data/56ed85f89/0d5f7dbe7d074da4bf8dc105753998e1/FLAGfc5e0e65f [2022-11-20 11:18:49,271 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/data/56ed85f89/0d5f7dbe7d074da4bf8dc105753998e1 [2022-11-20 11:18:49,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:18:49,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:18:49,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:18:49,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:18:49,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:18:49,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:18:49" (1/1) ... [2022-11-20 11:18:49,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af327b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:49, skipping insertion in model container [2022-11-20 11:18:49,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:18:49" (1/1) ... [2022-11-20 11:18:49,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:18:49,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:18:50,031 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2022-11-20 11:18:50,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:18:50,333 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:18:50,427 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2022-11-20 11:18:50,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:18:50,556 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:18:50,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50 WrapperNode [2022-11-20 11:18:50,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:18:50,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:18:50,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:18:50,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:18:50,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,740 INFO L138 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1046 [2022-11-20 11:18:50,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:18:50,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:18:50,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:18:50,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:18:50,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:18:50,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:18:50,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:18:50,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:18:50,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (1/1) ... [2022-11-20 11:18:50,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:18:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:50,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:18:51,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:18:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 11:18:51,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 11:18:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 11:18:51,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 11:18:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 11:18:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 11:18:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 11:18:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 11:18:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 11:18:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 11:18:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 11:18:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 11:18:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 11:18:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 11:18:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 11:18:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-20 11:18:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-20 11:18:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 11:18:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 11:18:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:18:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 11:18:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 11:18:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 11:18:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 11:18:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 11:18:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 11:18:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 11:18:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 11:18:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 11:18:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 11:18:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 11:18:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 11:18:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 11:18:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 11:18:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:18:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 11:18:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 11:18:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:18:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:18:51,406 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:18:51,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:18:52,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:18:52,725 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:18:52,726 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:18:52,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:52 BoogieIcfgContainer [2022-11-20 11:18:52,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:18:52,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:18:52,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:18:52,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:18:52,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:18:49" (1/3) ... [2022-11-20 11:18:52,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9fc4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:18:52, skipping insertion in model container [2022-11-20 11:18:52,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:18:50" (2/3) ... [2022-11-20 11:18:52,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9fc4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:18:52, skipping insertion in model container [2022-11-20 11:18:52,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:18:52" (3/3) ... [2022-11-20 11:18:52,752 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product24.cil.c [2022-11-20 11:18:52,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:18:52,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:18:52,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:18:52,877 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;@466c4977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:18:52,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:18:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-20 11:18:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 11:18:52,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:52,937 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 11:18:52,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1529654468, now seen corresponding path program 1 times [2022-11-20 11:18:52,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:52,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486812936] [2022-11-20 11:18:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:18:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:18:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:18:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:18:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:18:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:18:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:18:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:18:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:18:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:18:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:18:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 11:18:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:18:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:18:53,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:53,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486812936] [2022-11-20 11:18:53,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486812936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:53,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807822641] [2022-11-20 11:18:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:53,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:53,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:53,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:18:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:54,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:18:54,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 11:18:54,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:54,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807822641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:54,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:54,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-20 11:18:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297058281] [2022-11-20 11:18:54,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:54,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:18:54,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:18:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:18:54,531 INFO L87 Difference]: Start difference. First operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:18:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:54,606 INFO L93 Difference]: Finished difference Result 481 states and 712 transitions. [2022-11-20 11:18:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:18:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2022-11-20 11:18:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:54,634 INFO L225 Difference]: With dead ends: 481 [2022-11-20 11:18:54,638 INFO L226 Difference]: Without dead ends: 313 [2022-11-20 11:18:54,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:18:54,658 INFO L413 NwaCegarLoop]: 479 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, 479 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 [2022-11-20 11:18:54,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-20 11:18:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-11-20 11:18:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 250 states have internal predecessors, (380), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-20 11:18:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2022-11-20 11:18:54,767 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 108 [2022-11-20 11:18:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:54,770 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2022-11-20 11:18:54,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:18:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2022-11-20 11:18:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 11:18:54,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:54,777 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-20 11:18:54,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:18:54,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:18:54,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash -482448083, now seen corresponding path program 1 times [2022-11-20 11:18:54,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:54,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137026095] [2022-11-20 11:18:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:54,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:18:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:18:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:18:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:18:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:18:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:18:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:18:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:18:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:18:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:18:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:18:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:18:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 11:18:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:18:55,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:55,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137026095] [2022-11-20 11:18:55,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137026095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:55,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545756669] [2022-11-20 11:18:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:55,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:55,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:55,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:55,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:18:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:18:56,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 11:18:56,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:56,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545756669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:56,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:56,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-20 11:18:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28559084] [2022-11-20 11:18:56,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:18:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:18:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:56,054 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:18:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:56,130 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2022-11-20 11:18:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:18:56,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2022-11-20 11:18:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:56,144 INFO L225 Difference]: With dead ends: 471 [2022-11-20 11:18:56,144 INFO L226 Difference]: Without dead ends: 316 [2022-11-20 11:18:56,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:56,150 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 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 [2022-11-20 11:18:56,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-20 11:18:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-11-20 11:18:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 252 states have internal predecessors, (382), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-20 11:18:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2022-11-20 11:18:56,196 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 109 [2022-11-20 11:18:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:56,200 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2022-11-20 11:18:56,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:18:56,200 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2022-11-20 11:18:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:18:56,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:56,206 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:56,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:56,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1960014467, now seen corresponding path program 1 times [2022-11-20 11:18:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:56,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705254963] [2022-11-20 11:18:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:18:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:18:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:18:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:18:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:18:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:18:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:18:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:18:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:18:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:18:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:18:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 11:18:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 11:18:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 11:18:56,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:56,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705254963] [2022-11-20 11:18:56,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705254963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:56,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815238264] [2022-11-20 11:18:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:56,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:56,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:56,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:56,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:18:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:18:57,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 11:18:57,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:57,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815238264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:57,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:57,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-20 11:18:57,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481906540] [2022-11-20 11:18:57,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:57,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:18:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:18:57,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:57,294 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:18:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:57,362 INFO L93 Difference]: Finished difference Result 665 states and 1013 transitions. [2022-11-20 11:18:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:18:57,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-11-20 11:18:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:57,367 INFO L225 Difference]: With dead ends: 665 [2022-11-20 11:18:57,367 INFO L226 Difference]: Without dead ends: 377 [2022-11-20 11:18:57,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:18:57,374 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 115 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 915 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 [2022-11-20 11:18:57,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 915 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-20 11:18:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2022-11-20 11:18:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.5374149659863945) internal successors, (452), 295 states have internal predecessors, (452), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-20 11:18:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 565 transitions. [2022-11-20 11:18:57,429 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 565 transitions. Word has length 118 [2022-11-20 11:18:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:57,431 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 565 transitions. [2022-11-20 11:18:57,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:18:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 565 transitions. [2022-11-20 11:18:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 11:18:57,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:57,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:57,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:57,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 11:18:57,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:57,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1907956032, now seen corresponding path program 1 times [2022-11-20 11:18:57,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:57,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125965623] [2022-11-20 11:18:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:57,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:18:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:18:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:18:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:18:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:18:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:18:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:18:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:18:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:18:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:18:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:18:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:18:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:18:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 11:18:58,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:58,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125965623] [2022-11-20 11:18:58,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125965623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:58,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790707395] [2022-11-20 11:18:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:58,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:58,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:58,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:18:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:58,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:18:58,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:18:58,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:58,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790707395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:58,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:18:58,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-20 11:18:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722502389] [2022-11-20 11:18:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:58,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:18:58,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:58,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:18:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:18:58,622 INFO L87 Difference]: Start difference. First operand 369 states and 565 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:18:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:18:58,753 INFO L93 Difference]: Finished difference Result 729 states and 1120 transitions. [2022-11-20 11:18:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:18:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2022-11-20 11:18:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:18:58,761 INFO L225 Difference]: With dead ends: 729 [2022-11-20 11:18:58,761 INFO L226 Difference]: Without dead ends: 371 [2022-11-20 11:18:58,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:18:58,768 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 133 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1695 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 [2022-11-20 11:18:58,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1695 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:18:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-20 11:18:58,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2022-11-20 11:18:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 295 states have (on average 1.535593220338983) internal successors, (453), 297 states have internal predecessors, (453), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2022-11-20 11:18:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 568 transitions. [2022-11-20 11:18:58,814 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 568 transitions. Word has length 119 [2022-11-20 11:18:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:18:58,814 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 568 transitions. [2022-11-20 11:18:58,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:18:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 568 transitions. [2022-11-20 11:18:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 11:18:58,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:18:58,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:58,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:59,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:18:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1921687363, now seen corresponding path program 1 times [2022-11-20 11:18:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:59,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888922105] [2022-11-20 11:18:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:18:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:18:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:18:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:18:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 11:18:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:18:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:18:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 11:18:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:18:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:18:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:18:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:18:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 11:18:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:18:59,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:59,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888922105] [2022-11-20 11:18:59,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888922105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:59,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504179081] [2022-11-20 11:18:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:59,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:59,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:59,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:59,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:18:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:59,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:18:59,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:19:00,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:19:00,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504179081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:00,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:19:00,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-20 11:19:00,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231407014] [2022-11-20 11:19:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:00,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:19:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:19:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:19:00,031 INFO L87 Difference]: Start difference. First operand 371 states and 568 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:00,145 INFO L93 Difference]: Finished difference Result 731 states and 1125 transitions. [2022-11-20 11:19:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:19:00,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-11-20 11:19:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:00,150 INFO L225 Difference]: With dead ends: 731 [2022-11-20 11:19:00,150 INFO L226 Difference]: Without dead ends: 373 [2022-11-20 11:19:00,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:19:00,153 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 132 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1684 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 [2022-11-20 11:19:00,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1684 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:19:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-20 11:19:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-11-20 11:19:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-11-20 11:19:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 574 transitions. [2022-11-20 11:19:00,191 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 574 transitions. Word has length 120 [2022-11-20 11:19:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:00,194 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 574 transitions. [2022-11-20 11:19:00,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 574 transitions. [2022-11-20 11:19:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 11:19:00,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:00,202 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:00,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:19:00,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:00,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash 417807318, now seen corresponding path program 1 times [2022-11-20 11:19:00,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:00,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208580486] [2022-11-20 11:19:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:19:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:19:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:19:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:19:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:19:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 11:19:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:19:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:19:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 11:19:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:00,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208580486] [2022-11-20 11:19:00,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208580486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:00,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:00,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:19:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701595589] [2022-11-20 11:19:00,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:00,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:19:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:00,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:19:00,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:19:00,749 INFO L87 Difference]: Start difference. First operand 373 states and 574 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:04,258 INFO L93 Difference]: Finished difference Result 920 states and 1423 transitions. [2022-11-20 11:19:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:19:04,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-11-20 11:19:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:04,263 INFO L225 Difference]: With dead ends: 920 [2022-11-20 11:19:04,263 INFO L226 Difference]: Without dead ends: 570 [2022-11-20 11:19:04,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:19:04,266 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1197 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:04,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1044 Invalid, 2969 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [405 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 11:19:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-11-20 11:19:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 373. [2022-11-20 11:19:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2022-11-20 11:19:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 573 transitions. [2022-11-20 11:19:04,329 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 573 transitions. Word has length 121 [2022-11-20 11:19:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 573 transitions. [2022-11-20 11:19:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 573 transitions. [2022-11-20 11:19:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 11:19:04,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:04,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:04,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:19:04,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:04,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash -672973775, now seen corresponding path program 2 times [2022-11-20 11:19:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:04,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585982799] [2022-11-20 11:19:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:19:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:19:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:19:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:19:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:19:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:19:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:19:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 11:19:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 11:19:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:04,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585982799] [2022-11-20 11:19:04,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585982799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:04,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:04,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:19:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134628097] [2022-11-20 11:19:04,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:04,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:19:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:19:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:19:04,710 INFO L87 Difference]: Start difference. First operand 373 states and 573 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:08,028 INFO L93 Difference]: Finished difference Result 922 states and 1426 transitions. [2022-11-20 11:19:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:19:08,029 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2022-11-20 11:19:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:08,044 INFO L225 Difference]: With dead ends: 922 [2022-11-20 11:19:08,044 INFO L226 Difference]: Without dead ends: 572 [2022-11-20 11:19:08,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:19:08,049 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1212 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:08,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1043 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 11:19:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-20 11:19:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2022-11-20 11:19:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2022-11-20 11:19:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2022-11-20 11:19:08,125 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 122 [2022-11-20 11:19:08,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:08,126 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2022-11-20 11:19:08,126 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2022-11-20 11:19:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 11:19:08,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:08,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:08,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:19:08,130 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:08,131 INFO L85 PathProgramCache]: Analyzing trace with hash -31932419, now seen corresponding path program 1 times [2022-11-20 11:19:08,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:08,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525230027] [2022-11-20 11:19:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:08,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:19:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:19:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 11:19:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 11:19:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 11:19:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 11:19:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 11:19:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 11:19:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525230027] [2022-11-20 11:19:08,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525230027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:08,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:08,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:19:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787172201] [2022-11-20 11:19:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:08,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:19:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:19:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:19:08,477 INFO L87 Difference]: Start difference. First operand 375 states and 576 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:11,755 INFO L93 Difference]: Finished difference Result 922 states and 1425 transitions. [2022-11-20 11:19:11,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:19:11,764 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2022-11-20 11:19:11,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:11,772 INFO L225 Difference]: With dead ends: 922 [2022-11-20 11:19:11,772 INFO L226 Difference]: Without dead ends: 572 [2022-11-20 11:19:11,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:19:11,777 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1220 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:11,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1042 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 11:19:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-20 11:19:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2022-11-20 11:19:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2022-11-20 11:19:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2022-11-20 11:19:11,885 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 123 [2022-11-20 11:19:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:11,885 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2022-11-20 11:19:11,886 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, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:19:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2022-11-20 11:19:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 11:19:11,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:11,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:11,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:19:11,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash 554343803, now seen corresponding path program 1 times [2022-11-20 11:19:11,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:11,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878961015] [2022-11-20 11:19:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:19:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:19:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 11:19:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 11:19:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 11:19:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 11:19:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 11:19:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:19:12,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:12,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878961015] [2022-11-20 11:19:12,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878961015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:12,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:12,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:19:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149868550] [2022-11-20 11:19:12,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:12,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:19:12,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:12,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:19:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:19:12,259 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:19:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:16,288 INFO L93 Difference]: Finished difference Result 920 states and 1420 transitions. [2022-11-20 11:19:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:19:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2022-11-20 11:19:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:16,293 INFO L225 Difference]: With dead ends: 920 [2022-11-20 11:19:16,294 INFO L226 Difference]: Without dead ends: 572 [2022-11-20 11:19:16,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:19:16,297 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1328 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4169 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 4169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:16,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 1361 Invalid, 4627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [458 Valid, 4169 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 11:19:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-20 11:19:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2022-11-20 11:19:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-11-20 11:19:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2022-11-20 11:19:16,362 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 123 [2022-11-20 11:19:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:16,364 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2022-11-20 11:19:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:19:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2022-11-20 11:19:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:19:16,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:16,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:16,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:19:16,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1074969378, now seen corresponding path program 2 times [2022-11-20 11:19:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:16,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929298994] [2022-11-20 11:19:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:19:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:19:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:19:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:19:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 11:19:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 11:19:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 11:19:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:19:16,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:16,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929298994] [2022-11-20 11:19:16,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929298994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:16,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:16,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:19:16,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044184371] [2022-11-20 11:19:16,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:16,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:19:16,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:16,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:19:16,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:19:16,810 INFO L87 Difference]: Start difference. First operand 375 states and 575 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:19:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:20,920 INFO L93 Difference]: Finished difference Result 922 states and 1426 transitions. [2022-11-20 11:19:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:19:20,921 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2022-11-20 11:19:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:20,926 INFO L225 Difference]: With dead ends: 922 [2022-11-20 11:19:20,926 INFO L226 Difference]: Without dead ends: 574 [2022-11-20 11:19:20,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:19:20,929 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1324 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 4698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:20,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 1361 Invalid, 4698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 11:19:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-20 11:19:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 377. [2022-11-20 11:19:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.5302013422818792) internal successors, (456), 303 states have internal predecessors, (456), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2022-11-20 11:19:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 581 transitions. [2022-11-20 11:19:20,992 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 581 transitions. Word has length 124 [2022-11-20 11:19:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:20,992 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 581 transitions. [2022-11-20 11:19:20,993 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, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 11:19:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 581 transitions. [2022-11-20 11:19:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 11:19:20,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:20,996 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:20,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:19:20,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:20,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:20,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1606301664, now seen corresponding path program 1 times [2022-11-20 11:19:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:20,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337531654] [2022-11-20 11:19:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:20,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 11:19:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:19:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:19:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:19:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:19:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:19:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 11:19:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:19:21,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:21,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337531654] [2022-11-20 11:19:21,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337531654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:19:21,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31568533] [2022-11-20 11:19:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:21,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:19:21,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:19:21,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:19:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:21,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:19:21,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:21,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:19:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:21,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31568533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:19:21,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:19:21,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-20 11:19:21,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442525248] [2022-11-20 11:19:21,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:19:21,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:19:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:19:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:19:21,928 INFO L87 Difference]: Start difference. First operand 377 states and 581 transitions. Second operand has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 11:19:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:27,538 INFO L93 Difference]: Finished difference Result 1651 states and 2734 transitions. [2022-11-20 11:19:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:19:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 125 [2022-11-20 11:19:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:27,549 INFO L225 Difference]: With dead ends: 1651 [2022-11-20 11:19:27,549 INFO L226 Difference]: Without dead ends: 1305 [2022-11-20 11:19:27,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:19:27,553 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 3423 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 5332 mSolverCounterSat, 1229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 6561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1229 IncrementalHoareTripleChecker+Valid, 5332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:27,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3425 Valid, 2863 Invalid, 6561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1229 Valid, 5332 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 11:19:27,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-11-20 11:19:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 730. [2022-11-20 11:19:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 587 states have (on average 1.5792163543441227) internal successors, (927), 592 states have internal predecessors, (927), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2022-11-20 11:19:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1190 transitions. [2022-11-20 11:19:27,684 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1190 transitions. Word has length 125 [2022-11-20 11:19:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:27,684 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1190 transitions. [2022-11-20 11:19:27,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-20 11:19:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1190 transitions. [2022-11-20 11:19:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 11:19:27,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:27,691 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, 1] [2022-11-20 11:19:27,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 11:19:27,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01b600a-d31a-4cf1-95c1-aba698931098/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:19:27,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash 199909962, now seen corresponding path program 1 times [2022-11-20 11:19:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:27,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523501678] [2022-11-20 11:19:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:27,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:27,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:19:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:19:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:19:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:19:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 11:19:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 11:19:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 11:19:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:28,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523501678] [2022-11-20 11:19:28,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523501678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:28,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:28,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065959052] [2022-11-20 11:19:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:28,085 INFO L87 Difference]: Start difference. First operand 730 states and 1190 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:30,284 INFO L93 Difference]: Finished difference Result 1912 states and 3177 transitions. [2022-11-20 11:19:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-11-20 11:19:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:30,293 INFO L225 Difference]: With dead ends: 1912 [2022-11-20 11:19:30,293 INFO L226 Difference]: Without dead ends: 1260 [2022-11-20 11:19:30,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:30,298 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1161 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:30,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 904 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 11:19:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-11-20 11:19:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1055. [2022-11-20 11:19:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 848 states have (on average 1.5943396226415094) internal successors, (1352), 853 states have internal predecessors, (1352), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2022-11-20 11:19:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1753 transitions. [2022-11-20 11:19:30,477 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1753 transitions. Word has length 128 [2022-11-20 11:19:30,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:30,477 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1753 transitions. [2022-11-20 11:19:30,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1753 transitions. [2022-11-20 11:19:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 11:19:30,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:30,485 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, 1, 1] [2022-11-20 11:19:30,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:19:30,485 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:30,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash -409934556, now seen corresponding path program 1 times [2022-11-20 11:19:30,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:30,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313860119] [2022-11-20 11:19:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:30,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:19:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:19:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 11:19:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 11:19:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:19:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 11:19:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 11:19:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:30,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:30,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313860119] [2022-11-20 11:19:30,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313860119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:30,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:30,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:30,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905289866] [2022-11-20 11:19:30,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:30,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:30,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:30,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:30,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:30,613 INFO L87 Difference]: Start difference. First operand 1055 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:32,634 INFO L93 Difference]: Finished difference Result 2717 states and 4561 transitions. [2022-11-20 11:19:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-11-20 11:19:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:32,645 INFO L225 Difference]: With dead ends: 2717 [2022-11-20 11:19:32,646 INFO L226 Difference]: Without dead ends: 1793 [2022-11-20 11:19:32,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:32,650 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1177 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:32,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 869 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:19:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2022-11-20 11:19:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1588. [2022-11-20 11:19:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1286 states have (on average 1.6003110419906688) internal successors, (2058), 1291 states have internal predecessors, (2058), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2022-11-20 11:19:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2649 transitions. [2022-11-20 11:19:32,853 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2649 transitions. Word has length 129 [2022-11-20 11:19:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:32,854 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2649 transitions. [2022-11-20 11:19:32,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2649 transitions. [2022-11-20 11:19:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 11:19:32,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:32,863 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, 1, 1, 1] [2022-11-20 11:19:32,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:19:32,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:32,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:32,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1950710404, now seen corresponding path program 1 times [2022-11-20 11:19:32,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:32,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716934038] [2022-11-20 11:19:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:32,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:19:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:19:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:19:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 11:19:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:19:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 11:19:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:19:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:32,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:32,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716934038] [2022-11-20 11:19:32,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716934038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:32,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:32,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:32,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820503705] [2022-11-20 11:19:32,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:32,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:32,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:32,992 INFO L87 Difference]: Start difference. First operand 1588 states and 2649 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:35,088 INFO L93 Difference]: Finished difference Result 3924 states and 6647 transitions. [2022-11-20 11:19:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-11-20 11:19:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:35,103 INFO L225 Difference]: With dead ends: 3924 [2022-11-20 11:19:35,103 INFO L226 Difference]: Without dead ends: 2602 [2022-11-20 11:19:35,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:35,109 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1169 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:35,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 867 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:19:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2022-11-20 11:19:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2397. [2022-11-20 11:19:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1972 states have (on average 1.604969574036511) internal successors, (3165), 1977 states have internal predecessors, (3165), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2022-11-20 11:19:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4018 transitions. [2022-11-20 11:19:35,426 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4018 transitions. Word has length 130 [2022-11-20 11:19:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:35,426 INFO L495 AbstractCegarLoop]: Abstraction has 2397 states and 4018 transitions. [2022-11-20 11:19:35,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4018 transitions. [2022-11-20 11:19:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 11:19:35,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:35,437 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, 1, 1, 1, 1] [2022-11-20 11:19:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:19:35,437 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2048055011, now seen corresponding path program 1 times [2022-11-20 11:19:35,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:35,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183870565] [2022-11-20 11:19:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:35,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:19:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:19:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:19:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:19:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 11:19:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 11:19:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 11:19:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:35,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:35,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183870565] [2022-11-20 11:19:35,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183870565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:35,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:35,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:35,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560341122] [2022-11-20 11:19:35,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:35,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:35,580 INFO L87 Difference]: Start difference. First operand 2397 states and 4018 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:37,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:37,756 INFO L93 Difference]: Finished difference Result 5808 states and 9907 transitions. [2022-11-20 11:19:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:37,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2022-11-20 11:19:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:37,777 INFO L225 Difference]: With dead ends: 5808 [2022-11-20 11:19:37,777 INFO L226 Difference]: Without dead ends: 3896 [2022-11-20 11:19:37,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:37,785 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1163 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:37,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 865 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:19:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2022-11-20 11:19:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3691. [2022-11-20 11:19:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3087 states have (on average 1.6077097505668934) internal successors, (4963), 3092 states have internal predecessors, (4963), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2022-11-20 11:19:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 6200 transitions. [2022-11-20 11:19:38,430 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 6200 transitions. Word has length 131 [2022-11-20 11:19:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:38,430 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 6200 transitions. [2022-11-20 11:19:38,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 6200 transitions. [2022-11-20 11:19:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:19:38,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:38,445 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, 1, 1, 1, 1, 1] [2022-11-20 11:19:38,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:19:38,446 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash 536030400, now seen corresponding path program 1 times [2022-11-20 11:19:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:38,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534296072] [2022-11-20 11:19:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 11:19:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:19:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:19:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 11:19:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 11:19:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 11:19:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:19:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:38,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:38,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534296072] [2022-11-20 11:19:38,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534296072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:38,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:38,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:38,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631159855] [2022-11-20 11:19:38,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:38,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:38,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:38,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:38,586 INFO L87 Difference]: Start difference. First operand 3691 states and 6200 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:41,040 INFO L93 Difference]: Finished difference Result 8911 states and 15271 transitions. [2022-11-20 11:19:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:41,040 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-11-20 11:19:41,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:41,073 INFO L225 Difference]: With dead ends: 8911 [2022-11-20 11:19:41,073 INFO L226 Difference]: Without dead ends: 6037 [2022-11-20 11:19:41,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:41,084 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1172 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:41,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 899 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:19:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6037 states. [2022-11-20 11:19:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6037 to 5832. [2022-11-20 11:19:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 4852 states have (on average 1.6011953833470733) internal successors, (7769), 4857 states have internal predecessors, (7769), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2022-11-20 11:19:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9802 transitions. [2022-11-20 11:19:42,092 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9802 transitions. Word has length 132 [2022-11-20 11:19:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:42,093 INFO L495 AbstractCegarLoop]: Abstraction has 5832 states and 9802 transitions. [2022-11-20 11:19:42,101 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9802 transitions. [2022-11-20 11:19:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:19:42,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:42,126 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, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:42,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:19:42,127 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash -507233377, now seen corresponding path program 1 times [2022-11-20 11:19:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:42,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521357746] [2022-11-20 11:19:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 11:19:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:19:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 11:19:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:19:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 11:19:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:19:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 11:19:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:42,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521357746] [2022-11-20 11:19:42,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521357746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:42,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:42,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:42,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198177331] [2022-11-20 11:19:42,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:42,287 INFO L87 Difference]: Start difference. First operand 5832 states and 9802 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:45,305 INFO L93 Difference]: Finished difference Result 14528 states and 24884 transitions. [2022-11-20 11:19:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:45,306 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-11-20 11:19:45,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:45,361 INFO L225 Difference]: With dead ends: 14528 [2022-11-20 11:19:45,361 INFO L226 Difference]: Without dead ends: 9915 [2022-11-20 11:19:45,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:45,379 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1164 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:45,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 874 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:19:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9915 states. [2022-11-20 11:19:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9915 to 9710. [2022-11-20 11:19:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9710 states, 8124 states have (on average 1.5987198424421467) internal successors, (12988), 8129 states have internal predecessors, (12988), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2022-11-20 11:19:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 16311 transitions. [2022-11-20 11:19:46,741 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 16311 transitions. Word has length 133 [2022-11-20 11:19:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:46,742 INFO L495 AbstractCegarLoop]: Abstraction has 9710 states and 16311 transitions. [2022-11-20 11:19:46,742 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 16311 transitions. [2022-11-20 11:19:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:19:46,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:46,773 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:46,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:19:46,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:46,774 INFO L85 PathProgramCache]: Analyzing trace with hash -318072430, now seen corresponding path program 1 times [2022-11-20 11:19:46,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:46,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414201653] [2022-11-20 11:19:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:46,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 11:19:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:19:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:19:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 11:19:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 11:19:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 11:19:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 11:19:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:46,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414201653] [2022-11-20 11:19:46,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414201653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:46,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:46,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445767269] [2022-11-20 11:19:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:46,919 INFO L87 Difference]: Start difference. First operand 9710 states and 16311 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:50,460 INFO L93 Difference]: Finished difference Result 25237 states and 43165 transitions. [2022-11-20 11:19:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:50,460 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-11-20 11:19:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:50,544 INFO L225 Difference]: With dead ends: 25237 [2022-11-20 11:19:50,545 INFO L226 Difference]: Without dead ends: 17228 [2022-11-20 11:19:50,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:50,576 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1149 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:50,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 912 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:19:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2022-11-20 11:19:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 17023. [2022-11-20 11:19:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 14234 states have (on average 1.590136293382043) internal successors, (22634), 14239 states have internal predecessors, (22634), 2767 states have call successors, (2767), 17 states have call predecessors, (2767), 21 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2022-11-20 11:19:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 28507 transitions. [2022-11-20 11:19:53,001 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 28507 transitions. Word has length 134 [2022-11-20 11:19:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:53,002 INFO L495 AbstractCegarLoop]: Abstraction has 17023 states and 28507 transitions. [2022-11-20 11:19:53,002 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 28507 transitions. [2022-11-20 11:19:53,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 11:19:53,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:53,040 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:53,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:19:53,041 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2145052610, now seen corresponding path program 1 times [2022-11-20 11:19:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:53,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237633964] [2022-11-20 11:19:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:19:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:19:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:19:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:19:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:19:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:19:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:19:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:19:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 11:19:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:19:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:19:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 11:19:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 11:19:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:19:53,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:53,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237633964] [2022-11-20 11:19:53,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237633964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:53,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:53,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:19:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683589015] [2022-11-20 11:19:53,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:53,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:19:53,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:19:53,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:19:53,186 INFO L87 Difference]: Start difference. First operand 17023 states and 28507 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:19:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:59,012 INFO L93 Difference]: Finished difference Result 45213 states and 77178 transitions. [2022-11-20 11:19:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:59,013 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2022-11-20 11:19:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:59,172 INFO L225 Difference]: With dead ends: 45213 [2022-11-20 11:19:59,173 INFO L226 Difference]: Without dead ends: 30568 [2022-11-20 11:19:59,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:59,220 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1159 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:59,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 872 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:19:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30568 states. [2022-11-20 11:20:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30568 to 30363. [2022-11-20 11:20:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30363 states, 25535 states have (on average 1.5859408654787546) internal successors, (40497), 25540 states have internal predecessors, (40497), 4806 states have call successors, (4806), 17 states have call predecessors, (4806), 21 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2022-11-20 11:20:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30363 states to 30363 states and 50722 transitions. [2022-11-20 11:20:03,150 INFO L78 Accepts]: Start accepts. Automaton has 30363 states and 50722 transitions. Word has length 135 [2022-11-20 11:20:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:03,150 INFO L495 AbstractCegarLoop]: Abstraction has 30363 states and 50722 transitions. [2022-11-20 11:20:03,151 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:20:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 30363 states and 50722 transitions. [2022-11-20 11:20:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-20 11:20:03,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:03,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:20:03,192 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1901830544, now seen corresponding path program 1 times [2022-11-20 11:20:03,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:03,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894934107] [2022-11-20 11:20:03,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:03,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:20:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:20:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:20:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:20:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:20:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:20:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:20:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:20:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 11:20:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:20:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:20:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:20:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 11:20:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:20:03,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:03,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894934107] [2022-11-20 11:20:03,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894934107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:03,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:03,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:20:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697638341] [2022-11-20 11:20:03,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:03,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:20:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:20:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:20:03,357 INFO L87 Difference]: Start difference. First operand 30363 states and 50722 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:20:11,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:11,873 INFO L93 Difference]: Finished difference Result 82950 states and 140702 transitions. [2022-11-20 11:20:11,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:20:11,874 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 136 [2022-11-20 11:20:11,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:12,173 INFO L225 Difference]: With dead ends: 82950 [2022-11-20 11:20:12,173 INFO L226 Difference]: Without dead ends: 55777 [2022-11-20 11:20:12,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:20:12,516 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1140 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:12,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 872 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:20:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55777 states. [2022-11-20 11:20:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55777 to 55572. [2022-11-20 11:20:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55572 states, 47029 states have (on average 1.5804716238916414) internal successors, (74328), 47034 states have internal predecessors, (74328), 8521 states have call successors, (8521), 17 states have call predecessors, (8521), 21 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2022-11-20 11:20:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55572 states to 55572 states and 92515 transitions. [2022-11-20 11:20:20,008 INFO L78 Accepts]: Start accepts. Automaton has 55572 states and 92515 transitions. Word has length 136 [2022-11-20 11:20:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:20,009 INFO L495 AbstractCegarLoop]: Abstraction has 55572 states and 92515 transitions. [2022-11-20 11:20:20,009 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:20:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 55572 states and 92515 transitions. [2022-11-20 11:20:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-20 11:20:20,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:20,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:20,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:20:20,065 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:20,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:20,065 INFO L85 PathProgramCache]: Analyzing trace with hash 806716446, now seen corresponding path program 1 times [2022-11-20 11:20:20,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:20,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358693219] [2022-11-20 11:20:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:20,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:20:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:20:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:20:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:20:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:20:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:20:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:20:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:20:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:20:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 11:20:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:20:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 11:20:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 11:20:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:20:20,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358693219] [2022-11-20 11:20:20,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358693219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:20,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:20,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:20:20,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911019253] [2022-11-20 11:20:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:20,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:20:20,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:20,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:20:20,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:20:20,217 INFO L87 Difference]: Start difference. First operand 55572 states and 92515 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)