./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.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_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/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_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/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_7060ffda-b60e-4e84-83b3-081108bfcb5c/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 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f --- 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 10:36:01,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:36:01,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:36:01,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:36:01,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:36:01,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:36:01,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:36:01,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:36:01,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:36:01,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:36:01,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:36:01,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:36:01,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:36:01,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:36:01,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:36:01,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:36:01,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:36:01,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:36:01,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:36:01,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:36:01,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:36:01,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:36:01,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:36:01,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:36:01,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:36:01,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:36:01,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:36:01,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:36:01,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:36:01,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:36:01,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:36:01,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:36:01,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:36:01,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:36:01,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:36:01,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:36:01,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:36:01,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:36:01,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:36:01,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:36:01,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:36:01,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:36:01,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:36:01,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:36:01,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:36:01,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:36:01,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:36:01,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:36:01,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:36:01,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:36:01,236 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:36:01,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:36:01,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:36:01,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:36:01,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:36:01,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:36:01,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:36:01,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:36:01,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:36:01,238 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:36:01,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:36:01,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:36:01,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:36:01,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:36:01,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:36:01,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:36:01,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:01,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:36:01,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:36:01,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:36:01,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:36:01,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:36:01,240 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:36:01,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:36:01,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:36:01,241 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_7060ffda-b60e-4e84-83b3-081108bfcb5c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f [2022-11-20 10:36:01,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:36:01,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:36:01,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:36:01,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:36:01,581 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:36:01,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2022-11-20 10:36:04,705 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:36:04,945 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:36:04,946 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2022-11-20 10:36:04,962 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/data/07bc0ae43/ccfbdf85c66041139a4900d186f603a2/FLAG3849653ff [2022-11-20 10:36:04,980 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/data/07bc0ae43/ccfbdf85c66041139a4900d186f603a2 [2022-11-20 10:36:04,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:36:04,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:36:04,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:04,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:36:04,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:36:04,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:04" (1/1) ... [2022-11-20 10:36:04,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ceaa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:04, skipping insertion in model container [2022-11-20 10:36:04,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:04" (1/1) ... [2022-11-20 10:36:05,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:36:05,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:36:05,321 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_7060ffda-b60e-4e84-83b3-081108bfcb5c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2022-11-20 10:36:05,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:05,337 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:36:05,403 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_7060ffda-b60e-4e84-83b3-081108bfcb5c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2022-11-20 10:36:05,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:05,420 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:36:05,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05 WrapperNode [2022-11-20 10:36:05,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:05,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:05,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:36:05,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:36:05,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,479 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 479 [2022-11-20 10:36:05,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:05,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:36:05,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:36:05,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:36:05,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:36:05,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:36:05,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:36:05,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:36:05,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (1/1) ... [2022-11-20 10:36:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:05,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:36:05,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:36:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-11-20 10:36:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-11-20 10:36:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:36:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-11-20 10:36:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-11-20 10:36:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-20 10:36:05,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-20 10:36:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2022-11-20 10:36:05,649 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2022-11-20 10:36:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:36:05,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:36:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:36:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-11-20 10:36:05,650 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-11-20 10:36:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:36:05,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:36:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-11-20 10:36:05,651 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-11-20 10:36:05,846 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:36:05,848 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:36:06,485 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:36:06,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:36:06,515 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:36:06,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:06 BoogieIcfgContainer [2022-11-20 10:36:06,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:36:06,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:36:06,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:36:06,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:36:06,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:36:04" (1/3) ... [2022-11-20 10:36:06,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6152b5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:06, skipping insertion in model container [2022-11-20 10:36:06,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:05" (2/3) ... [2022-11-20 10:36:06,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6152b5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:06, skipping insertion in model container [2022-11-20 10:36:06,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:06" (3/3) ... [2022-11-20 10:36:06,535 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2022-11-20 10:36:06,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:36:06,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:36:06,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:36:06,671 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;@3ef62487, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:36:06,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:36:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 10:36:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 10:36:06,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:06,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:06,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:06,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1699901086, now seen corresponding path program 1 times [2022-11-20 10:36:06,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:06,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755464302] [2022-11-20 10:36:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:36:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:06,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:06,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755464302] [2022-11-20 10:36:06,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755464302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:06,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:06,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:36:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493226006] [2022-11-20 10:36:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:36:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:36:07,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:36:07,013 INFO L87 Difference]: Start difference. First operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:36:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:07,077 INFO L93 Difference]: Finished difference Result 340 states and 557 transitions. [2022-11-20 10:36:07,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:36:07,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-20 10:36:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:07,091 INFO L225 Difference]: With dead ends: 340 [2022-11-20 10:36:07,091 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 10:36:07,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:36:07,099 INFO L413 NwaCegarLoop]: 273 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, 273 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 10:36:07,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 10:36:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-20 10:36:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 10:36:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 273 transitions. [2022-11-20 10:36:07,154 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 273 transitions. Word has length 28 [2022-11-20 10:36:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:07,154 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 273 transitions. [2022-11-20 10:36:07,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:36:07,155 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 273 transitions. [2022-11-20 10:36:07,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 10:36:07,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:07,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:07,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:36:07,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:07,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1918755804, now seen corresponding path program 1 times [2022-11-20 10:36:07,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:07,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044800943] [2022-11-20 10:36:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:07,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:36:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:07,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044800943] [2022-11-20 10:36:07,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044800943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:07,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:07,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:36:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195897870] [2022-11-20 10:36:07,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:07,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:36:07,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:36:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:36:07,489 INFO L87 Difference]: Start difference. First operand 176 states and 273 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:36:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:07,686 INFO L93 Difference]: Finished difference Result 338 states and 520 transitions. [2022-11-20 10:36:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:36:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-20 10:36:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:07,690 INFO L225 Difference]: With dead ends: 338 [2022-11-20 10:36:07,690 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 10:36:07,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:07,693 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 137 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:07,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1160 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 10:36:07,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-20 10:36:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 138 states have internal predecessors, (199), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 10:36:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 261 transitions. [2022-11-20 10:36:07,715 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 261 transitions. Word has length 28 [2022-11-20 10:36:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:07,715 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 261 transitions. [2022-11-20 10:36:07,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:36:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 261 transitions. [2022-11-20 10:36:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 10:36:07,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:07,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:07,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:36:07,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709569, now seen corresponding path program 1 times [2022-11-20 10:36:07,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:07,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209475578] [2022-11-20 10:36:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:07,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:07,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209475578] [2022-11-20 10:36:07,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209475578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:07,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:07,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:07,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957064842] [2022-11-20 10:36:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:07,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:07,972 INFO L87 Difference]: Start difference. First operand 176 states and 261 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:36:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:08,041 INFO L93 Difference]: Finished difference Result 339 states and 512 transitions. [2022-11-20 10:36:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:08,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-11-20 10:36:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:08,043 INFO L225 Difference]: With dead ends: 339 [2022-11-20 10:36:08,043 INFO L226 Difference]: Without dead ends: 180 [2022-11-20 10:36:08,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:08,046 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 5 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:08,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 755 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-20 10:36:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-11-20 10:36:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.4428571428571428) internal successors, (202), 141 states have internal predecessors, (202), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 10:36:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2022-11-20 10:36:08,066 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 39 [2022-11-20 10:36:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:08,067 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2022-11-20 10:36:08,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:36:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2022-11-20 10:36:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:36:08,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:08,069 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:36:08,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:36:08,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:08,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:08,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2086587661, now seen corresponding path program 1 times [2022-11-20 10:36:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:08,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132290151] [2022-11-20 10:36:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:36:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:08,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:08,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132290151] [2022-11-20 10:36:08,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132290151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:08,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:08,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170097703] [2022-11-20 10:36:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:08,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:08,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:08,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:08,184 INFO L87 Difference]: Start difference. First operand 180 states and 264 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:08,294 INFO L93 Difference]: Finished difference Result 494 states and 735 transitions. [2022-11-20 10:36:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-20 10:36:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:08,301 INFO L225 Difference]: With dead ends: 494 [2022-11-20 10:36:08,301 INFO L226 Difference]: Without dead ends: 331 [2022-11-20 10:36:08,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:08,312 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 212 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:08,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 552 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-20 10:36:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2022-11-20 10:36:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.461847389558233) internal successors, (364), 251 states have internal predecessors, (364), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 10:36:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2022-11-20 10:36:08,371 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 55 [2022-11-20 10:36:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:08,371 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2022-11-20 10:36:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2022-11-20 10:36:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:36:08,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:08,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:08,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:36:08,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash 651939805, now seen corresponding path program 1 times [2022-11-20 10:36:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:08,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284917469] [2022-11-20 10:36:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 10:36:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:08,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:08,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284917469] [2022-11-20 10:36:08,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284917469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:08,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:08,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966285004] [2022-11-20 10:36:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:08,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:08,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:08,524 INFO L87 Difference]: Start difference. First operand 326 states and 484 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:08,619 INFO L93 Difference]: Finished difference Result 917 states and 1373 transitions. [2022-11-20 10:36:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:08,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-20 10:36:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:08,632 INFO L225 Difference]: With dead ends: 917 [2022-11-20 10:36:08,633 INFO L226 Difference]: Without dead ends: 608 [2022-11-20 10:36:08,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:08,641 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:08,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 573 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-20 10:36:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2022-11-20 10:36:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 453 states have (on average 1.4724061810154525) internal successors, (667), 457 states have internal predecessors, (667), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:36:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 901 transitions. [2022-11-20 10:36:08,730 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 901 transitions. Word has length 56 [2022-11-20 10:36:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:08,730 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 901 transitions. [2022-11-20 10:36:08,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 901 transitions. [2022-11-20 10:36:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:36:08,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:08,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:36:08,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -627923873, now seen corresponding path program 1 times [2022-11-20 10:36:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:08,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478179416] [2022-11-20 10:36:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 10:36:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:08,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:08,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478179416] [2022-11-20 10:36:08,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478179416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:08,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:08,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:36:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473139096] [2022-11-20 10:36:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:08,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:08,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:08,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:08,928 INFO L87 Difference]: Start difference. First operand 602 states and 901 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:09,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:09,359 INFO L93 Difference]: Finished difference Result 1639 states and 2507 transitions. [2022-11-20 10:36:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-20 10:36:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:09,370 INFO L225 Difference]: With dead ends: 1639 [2022-11-20 10:36:09,370 INFO L226 Difference]: Without dead ends: 1054 [2022-11-20 10:36:09,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:09,376 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 633 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:09,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 691 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:36:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-11-20 10:36:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 690. [2022-11-20 10:36:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 528 states have (on average 1.456439393939394) internal successors, (769), 531 states have internal predecessors, (769), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1017 transitions. [2022-11-20 10:36:09,504 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1017 transitions. Word has length 56 [2022-11-20 10:36:09,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:09,504 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1017 transitions. [2022-11-20 10:36:09,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1017 transitions. [2022-11-20 10:36:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 10:36:09,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:09,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:09,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:36:09,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash 707313810, now seen corresponding path program 1 times [2022-11-20 10:36:09,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:09,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404603685] [2022-11-20 10:36:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:36:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:09,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404603685] [2022-11-20 10:36:09,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404603685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:09,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:09,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:36:09,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969338028] [2022-11-20 10:36:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:09,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:09,694 INFO L87 Difference]: Start difference. First operand 690 states and 1017 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:10,125 INFO L93 Difference]: Finished difference Result 1643 states and 2507 transitions. [2022-11-20 10:36:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:36:10,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-20 10:36:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:10,131 INFO L225 Difference]: With dead ends: 1643 [2022-11-20 10:36:10,131 INFO L226 Difference]: Without dead ends: 1058 [2022-11-20 10:36:10,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:10,134 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 630 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:10,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 693 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:36:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-20 10:36:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 698. [2022-11-20 10:36:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 539 states have internal predecessors, (777), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1025 transitions. [2022-11-20 10:36:10,227 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1025 transitions. Word has length 57 [2022-11-20 10:36:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:10,227 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1025 transitions. [2022-11-20 10:36:10,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1025 transitions. [2022-11-20 10:36:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 10:36:10,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:10,229 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:36:10,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:36:10,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1187610108, now seen corresponding path program 1 times [2022-11-20 10:36:10,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:10,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355809325] [2022-11-20 10:36:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:10,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:36:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:10,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:10,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355809325] [2022-11-20 10:36:10,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355809325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:10,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:10,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:10,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268157461] [2022-11-20 10:36:10,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:10,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:10,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:10,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:10,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:10,367 INFO L87 Difference]: Start difference. First operand 698 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:10,784 INFO L93 Difference]: Finished difference Result 1643 states and 2499 transitions. [2022-11-20 10:36:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2022-11-20 10:36:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:10,791 INFO L225 Difference]: With dead ends: 1643 [2022-11-20 10:36:10,792 INFO L226 Difference]: Without dead ends: 1058 [2022-11-20 10:36:10,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:10,795 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 186 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:10,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 660 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:36:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-20 10:36:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 698. [2022-11-20 10:36:10,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4421641791044777) internal successors, (773), 539 states have internal predecessors, (773), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1021 transitions. [2022-11-20 10:36:10,903 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1021 transitions. Word has length 59 [2022-11-20 10:36:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:10,903 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1021 transitions. [2022-11-20 10:36:10,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:36:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1021 transitions. [2022-11-20 10:36:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 10:36:10,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:10,906 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:36:10,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:36:10,910 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:10,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797779, now seen corresponding path program 1 times [2022-11-20 10:36:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:10,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351424572] [2022-11-20 10:36:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:10,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:11,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:11,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351424572] [2022-11-20 10:36:11,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351424572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:11,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:11,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:11,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744679431] [2022-11-20 10:36:11,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:11,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:11,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:11,202 INFO L87 Difference]: Start difference. First operand 698 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 10:36:11,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:11,347 INFO L93 Difference]: Finished difference Result 1303 states and 1932 transitions. [2022-11-20 10:36:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:11,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2022-11-20 10:36:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:11,351 INFO L225 Difference]: With dead ends: 1303 [2022-11-20 10:36:11,352 INFO L226 Difference]: Without dead ends: 718 [2022-11-20 10:36:11,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:11,355 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 6 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:11,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-20 10:36:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2022-11-20 10:36:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 552 states have (on average 1.4293478260869565) internal successors, (789), 555 states have internal predecessors, (789), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1037 transitions. [2022-11-20 10:36:11,461 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1037 transitions. Word has length 60 [2022-11-20 10:36:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:11,461 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1037 transitions. [2022-11-20 10:36:11,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 10:36:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1037 transitions. [2022-11-20 10:36:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 10:36:11,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:11,463 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:36:11,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:36:11,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1474712019, now seen corresponding path program 1 times [2022-11-20 10:36:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:11,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336564680] [2022-11-20 10:36:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:11,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:11,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336564680] [2022-11-20 10:36:11,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336564680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:11,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:11,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:11,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88686164] [2022-11-20 10:36:11,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:11,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:11,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:11,643 INFO L87 Difference]: Start difference. First operand 718 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 10:36:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:11,761 INFO L93 Difference]: Finished difference Result 1343 states and 1976 transitions. [2022-11-20 10:36:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2022-11-20 10:36:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:11,766 INFO L225 Difference]: With dead ends: 1343 [2022-11-20 10:36:11,766 INFO L226 Difference]: Without dead ends: 738 [2022-11-20 10:36:11,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:11,769 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:11,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-20 10:36:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2022-11-20 10:36:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 568 states have (on average 1.4172535211267605) internal successors, (805), 571 states have internal predecessors, (805), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1053 transitions. [2022-11-20 10:36:11,874 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1053 transitions. Word has length 68 [2022-11-20 10:36:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:11,874 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1053 transitions. [2022-11-20 10:36:11,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 10:36:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1053 transitions. [2022-11-20 10:36:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:36:11,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:11,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:11,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:36:11,879 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:11,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:11,879 INFO L85 PathProgramCache]: Analyzing trace with hash -799213667, now seen corresponding path program 1 times [2022-11-20 10:36:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:11,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834129394] [2022-11-20 10:36:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:11,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:12,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:12,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834129394] [2022-11-20 10:36:12,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834129394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:12,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:12,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:12,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032601749] [2022-11-20 10:36:12,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:12,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:12,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:12,076 INFO L87 Difference]: Start difference. First operand 738 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:36:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:12,208 INFO L93 Difference]: Finished difference Result 1379 states and 1992 transitions. [2022-11-20 10:36:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:12,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-11-20 10:36:12,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:12,213 INFO L225 Difference]: With dead ends: 1379 [2022-11-20 10:36:12,213 INFO L226 Difference]: Without dead ends: 754 [2022-11-20 10:36:12,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:12,216 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:12,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-20 10:36:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2022-11-20 10:36:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 580 states have (on average 1.4086206896551725) internal successors, (817), 583 states have internal predecessors, (817), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1065 transitions. [2022-11-20 10:36:12,336 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1065 transitions. Word has length 76 [2022-11-20 10:36:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:12,337 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1065 transitions. [2022-11-20 10:36:12,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:36:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1065 transitions. [2022-11-20 10:36:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:36:12,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:12,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:12,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:36:12,343 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:12,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1597245636, now seen corresponding path program 1 times [2022-11-20 10:36:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:12,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981198068] [2022-11-20 10:36:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:36:12,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:12,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981198068] [2022-11-20 10:36:12,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981198068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:12,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:12,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:12,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612722521] [2022-11-20 10:36:12,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:12,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:12,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:12,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:12,552 INFO L87 Difference]: Start difference. First operand 754 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:36:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:12,663 INFO L93 Difference]: Finished difference Result 1415 states and 2032 transitions. [2022-11-20 10:36:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:12,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-11-20 10:36:12,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:12,668 INFO L225 Difference]: With dead ends: 1415 [2022-11-20 10:36:12,668 INFO L226 Difference]: Without dead ends: 774 [2022-11-20 10:36:12,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:12,671 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:12,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-11-20 10:36:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2022-11-20 10:36:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 596 states have (on average 1.3976510067114094) internal successors, (833), 599 states have internal predecessors, (833), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1081 transitions. [2022-11-20 10:36:12,765 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1081 transitions. Word has length 76 [2022-11-20 10:36:12,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:12,766 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1081 transitions. [2022-11-20 10:36:12,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:36:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1081 transitions. [2022-11-20 10:36:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 10:36:12,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:12,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:12,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:36:12,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash 837268772, now seen corresponding path program 1 times [2022-11-20 10:36:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:12,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197234786] [2022-11-20 10:36:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:36:13,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:13,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197234786] [2022-11-20 10:36:13,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197234786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:13,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:13,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:13,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574756667] [2022-11-20 10:36:13,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:13,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:13,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:13,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:13,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:13,003 INFO L87 Difference]: Start difference. First operand 774 states and 1081 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:36:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:13,106 INFO L93 Difference]: Finished difference Result 1459 states and 2060 transitions. [2022-11-20 10:36:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2022-11-20 10:36:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:13,112 INFO L225 Difference]: With dead ends: 1459 [2022-11-20 10:36:13,112 INFO L226 Difference]: Without dead ends: 798 [2022-11-20 10:36:13,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:13,115 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:13,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 764 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-11-20 10:36:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2022-11-20 10:36:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 616 states have (on average 1.3847402597402598) internal successors, (853), 619 states have internal predecessors, (853), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-11-20 10:36:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1101 transitions. [2022-11-20 10:36:13,206 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1101 transitions. Word has length 84 [2022-11-20 10:36:13,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:13,206 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1101 transitions. [2022-11-20 10:36:13,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:36:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1101 transitions. [2022-11-20 10:36:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 10:36:13,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:13,210 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:13,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:36:13,211 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1610117125, now seen corresponding path program 1 times [2022-11-20 10:36:13,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:13,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221481888] [2022-11-20 10:36:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:36:13,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:13,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221481888] [2022-11-20 10:36:13,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221481888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:13,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:13,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:36:13,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769776857] [2022-11-20 10:36:13,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:13,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:36:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:36:13,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:13,575 INFO L87 Difference]: Start difference. First operand 798 states and 1101 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 10:36:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:14,044 INFO L93 Difference]: Finished difference Result 2313 states and 3243 transitions. [2022-11-20 10:36:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:36:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2022-11-20 10:36:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:14,054 INFO L225 Difference]: With dead ends: 2313 [2022-11-20 10:36:14,054 INFO L226 Difference]: Without dead ends: 1628 [2022-11-20 10:36:14,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:36:14,057 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 324 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:14,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1919 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:36:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2022-11-20 10:36:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1082. [2022-11-20 10:36:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 827 states have (on average 1.3724304715840387) internal successors, (1135), 832 states have internal predecessors, (1135), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-20 10:36:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1479 transitions. [2022-11-20 10:36:14,227 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1479 transitions. Word has length 87 [2022-11-20 10:36:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:14,228 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1479 transitions. [2022-11-20 10:36:14,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 10:36:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1479 transitions. [2022-11-20 10:36:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 10:36:14,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:14,230 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:36:14,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:36:14,231 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:14,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1820782171, now seen corresponding path program 1 times [2022-11-20 10:36:14,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:14,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663466571] [2022-11-20 10:36:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:14,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:36:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:36:14,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:14,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663466571] [2022-11-20 10:36:14,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663466571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:14,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:14,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:14,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120131582] [2022-11-20 10:36:14,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:14,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:14,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:14,412 INFO L87 Difference]: Start difference. First operand 1082 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:36:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:14,557 INFO L93 Difference]: Finished difference Result 2007 states and 2768 transitions. [2022-11-20 10:36:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:14,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2022-11-20 10:36:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:14,563 INFO L225 Difference]: With dead ends: 2007 [2022-11-20 10:36:14,563 INFO L226 Difference]: Without dead ends: 1106 [2022-11-20 10:36:14,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:14,568 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:14,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-11-20 10:36:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2022-11-20 10:36:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 845 states have (on average 1.3644970414201183) internal successors, (1153), 850 states have internal predecessors, (1153), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-20 10:36:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1497 transitions. [2022-11-20 10:36:14,734 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1497 transitions. Word has length 91 [2022-11-20 10:36:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:14,735 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1497 transitions. [2022-11-20 10:36:14,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:36:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1497 transitions. [2022-11-20 10:36:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 10:36:14,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:14,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:14,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:36:14,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1723609181, now seen corresponding path program 1 times [2022-11-20 10:36:14,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:14,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576368133] [2022-11-20 10:36:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:36:15,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576368133] [2022-11-20 10:36:15,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576368133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:15,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:15,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:36:15,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824794791] [2022-11-20 10:36:15,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:36:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:15,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:36:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:15,074 INFO L87 Difference]: Start difference. First operand 1106 states and 1497 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:36:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:15,511 INFO L93 Difference]: Finished difference Result 1536 states and 2187 transitions. [2022-11-20 10:36:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:36:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2022-11-20 10:36:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:15,519 INFO L225 Difference]: With dead ends: 1536 [2022-11-20 10:36:15,519 INFO L226 Difference]: Without dead ends: 1534 [2022-11-20 10:36:15,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:36:15,521 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 329 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:15,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2532 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2022-11-20 10:36:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1114. [2022-11-20 10:36:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 849 states have (on average 1.3627797408716136) internal successors, (1157), 856 states have internal predecessors, (1157), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2022-11-20 10:36:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1505 transitions. [2022-11-20 10:36:15,687 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1505 transitions. Word has length 90 [2022-11-20 10:36:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:15,688 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1505 transitions. [2022-11-20 10:36:15,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:36:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1505 transitions. [2022-11-20 10:36:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 10:36:15,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:15,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:15,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:36:15,690 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:15,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2094931668, now seen corresponding path program 1 times [2022-11-20 10:36:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:15,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170158001] [2022-11-20 10:36:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:36:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:15,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170158001] [2022-11-20 10:36:15,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170158001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:15,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:15,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:36:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136995692] [2022-11-20 10:36:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:15,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:36:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:36:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:15,864 INFO L87 Difference]: Start difference. First operand 1114 states and 1505 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:36:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:16,318 INFO L93 Difference]: Finished difference Result 2204 states and 3042 transitions. [2022-11-20 10:36:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:36:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2022-11-20 10:36:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:16,326 INFO L225 Difference]: With dead ends: 2204 [2022-11-20 10:36:16,326 INFO L226 Difference]: Without dead ends: 1353 [2022-11-20 10:36:16,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:36:16,330 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 371 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:16,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1890 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-11-20 10:36:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1117. [2022-11-20 10:36:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 863 states have (on average 1.3534183082271147) internal successors, (1168), 875 states have internal predecessors, (1168), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2022-11-20 10:36:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1492 transitions. [2022-11-20 10:36:16,537 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1492 transitions. Word has length 93 [2022-11-20 10:36:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:16,538 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1492 transitions. [2022-11-20 10:36:16,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:36:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1492 transitions. [2022-11-20 10:36:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 10:36:16,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:16,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:16,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:36:16,540 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:16,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425973, now seen corresponding path program 1 times [2022-11-20 10:36:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:16,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624834697] [2022-11-20 10:36:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:16,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:36:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:36:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:16,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624834697] [2022-11-20 10:36:16,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624834697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:16,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:16,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:36:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722092929] [2022-11-20 10:36:16,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:16,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:36:16,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:16,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:36:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:16,857 INFO L87 Difference]: Start difference. First operand 1117 states and 1492 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:36:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:17,352 INFO L93 Difference]: Finished difference Result 2255 states and 3097 transitions. [2022-11-20 10:36:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:36:17,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-11-20 10:36:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:17,360 INFO L225 Difference]: With dead ends: 2255 [2022-11-20 10:36:17,360 INFO L226 Difference]: Without dead ends: 1381 [2022-11-20 10:36:17,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:36:17,364 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 286 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:17,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2040 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:36:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-11-20 10:36:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1008. [2022-11-20 10:36:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 781 states have (on average 1.3559539052496798) internal successors, (1059), 791 states have internal predecessors, (1059), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2022-11-20 10:36:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1349 transitions. [2022-11-20 10:36:17,541 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1349 transitions. Word has length 95 [2022-11-20 10:36:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:17,541 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1349 transitions. [2022-11-20 10:36:17,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:36:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1349 transitions. [2022-11-20 10:36:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 10:36:17,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:17,543 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:36:17,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash -375753860, now seen corresponding path program 1 times [2022-11-20 10:36:17,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098852842] [2022-11-20 10:36:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:36:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 10:36:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:36:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098852842] [2022-11-20 10:36:17,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098852842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:17,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:17,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:36:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519186253] [2022-11-20 10:36:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:36:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:36:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:17,897 INFO L87 Difference]: Start difference. First operand 1008 states and 1349 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:36:18,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:18,903 INFO L93 Difference]: Finished difference Result 2311 states and 3183 transitions. [2022-11-20 10:36:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:36:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 96 [2022-11-20 10:36:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:18,912 INFO L225 Difference]: With dead ends: 2311 [2022-11-20 10:36:18,912 INFO L226 Difference]: Without dead ends: 1466 [2022-11-20 10:36:18,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:36:18,915 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 669 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:18,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 2098 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:36:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-11-20 10:36:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1024. [2022-11-20 10:36:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 789 states have (on average 1.3333333333333333) internal successors, (1052), 800 states have internal predecessors, (1052), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2022-11-20 10:36:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1348 transitions. [2022-11-20 10:36:19,136 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1348 transitions. Word has length 96 [2022-11-20 10:36:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:19,137 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1348 transitions. [2022-11-20 10:36:19,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:36:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1348 transitions. [2022-11-20 10:36:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 10:36:19,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:19,139 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:19,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:36:19,139 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -566843121, now seen corresponding path program 1 times [2022-11-20 10:36:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:19,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444812052] [2022-11-20 10:36:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:19,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:36:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:36:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:36:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:36:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:36:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:36:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:36:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444812052] [2022-11-20 10:36:19,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444812052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:19,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:19,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682368264] [2022-11-20 10:36:19,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:19,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:19,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:19,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:19,318 INFO L87 Difference]: Start difference. First operand 1024 states and 1348 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:19,938 INFO L93 Difference]: Finished difference Result 2878 states and 3865 transitions. [2022-11-20 10:36:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:19,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-11-20 10:36:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:19,949 INFO L225 Difference]: With dead ends: 2878 [2022-11-20 10:36:19,949 INFO L226 Difference]: Without dead ends: 2068 [2022-11-20 10:36:19,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:19,953 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 372 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:19,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1097 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2022-11-20 10:36:20,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1768. [2022-11-20 10:36:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1343 states have (on average 1.326880119136262) internal successors, (1782), 1362 states have internal predecessors, (1782), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2022-11-20 10:36:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2326 transitions. [2022-11-20 10:36:20,354 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2326 transitions. Word has length 97 [2022-11-20 10:36:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:20,355 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2326 transitions. [2022-11-20 10:36:20,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2326 transitions. [2022-11-20 10:36:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 10:36:20,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:20,357 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:20,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:36:20,358 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1375100484, now seen corresponding path program 1 times [2022-11-20 10:36:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:20,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419800033] [2022-11-20 10:36:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:36:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:36:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:36:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:36:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:36:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:36:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:36:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419800033] [2022-11-20 10:36:20,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419800033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:20,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:20,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:36:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167446264] [2022-11-20 10:36:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:36:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:36:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:20,711 INFO L87 Difference]: Start difference. First operand 1768 states and 2326 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:21,925 INFO L93 Difference]: Finished difference Result 3919 states and 5292 transitions. [2022-11-20 10:36:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:36:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-11-20 10:36:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:21,937 INFO L225 Difference]: With dead ends: 3919 [2022-11-20 10:36:21,938 INFO L226 Difference]: Without dead ends: 2447 [2022-11-20 10:36:21,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:36:21,943 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 698 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:21,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 2011 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:36:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2022-11-20 10:36:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1793. [2022-11-20 10:36:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1355 states have (on average 1.3210332103321034) internal successors, (1790), 1375 states have internal predecessors, (1790), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2022-11-20 10:36:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2350 transitions. [2022-11-20 10:36:22,356 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2350 transitions. Word has length 99 [2022-11-20 10:36:22,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:22,357 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2350 transitions. [2022-11-20 10:36:22,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2350 transitions. [2022-11-20 10:36:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 10:36:22,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:22,360 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:22,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:36:22,360 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash -599061911, now seen corresponding path program 1 times [2022-11-20 10:36:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:22,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678838550] [2022-11-20 10:36:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:22,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:36:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 10:36:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:36:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 10:36:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 10:36:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:36:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:36:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:36:22,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:22,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678838550] [2022-11-20 10:36:22,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678838550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:22,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:22,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:22,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763778944] [2022-11-20 10:36:22,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:22,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:22,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:22,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:22,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:22,528 INFO L87 Difference]: Start difference. First operand 1793 states and 2350 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:23,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:23,265 INFO L93 Difference]: Finished difference Result 4650 states and 6153 transitions. [2022-11-20 10:36:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:23,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-20 10:36:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:23,283 INFO L225 Difference]: With dead ends: 4650 [2022-11-20 10:36:23,283 INFO L226 Difference]: Without dead ends: 3194 [2022-11-20 10:36:23,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:23,290 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 399 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:23,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1147 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2022-11-20 10:36:23,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2814. [2022-11-20 10:36:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2101 states have (on average 1.3122322703474536) internal successors, (2757), 2132 states have internal predecessors, (2757), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2022-11-20 10:36:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3677 transitions. [2022-11-20 10:36:23,974 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3677 transitions. Word has length 101 [2022-11-20 10:36:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:23,974 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 3677 transitions. [2022-11-20 10:36:23,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3677 transitions. [2022-11-20 10:36:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 10:36:23,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:23,979 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:36:23,979 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash 647926777, now seen corresponding path program 1 times [2022-11-20 10:36:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:23,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712667824] [2022-11-20 10:36:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:23,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:36:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:36:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:36:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 10:36:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:36:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 10:36:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:36:24,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:24,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712667824] [2022-11-20 10:36:24,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712667824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:24,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:24,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:24,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729657388] [2022-11-20 10:36:24,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:24,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:24,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:24,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:24,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:24,107 INFO L87 Difference]: Start difference. First operand 2814 states and 3677 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:25,032 INFO L93 Difference]: Finished difference Result 6657 states and 8764 transitions. [2022-11-20 10:36:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-20 10:36:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:25,079 INFO L225 Difference]: With dead ends: 6657 [2022-11-20 10:36:25,079 INFO L226 Difference]: Without dead ends: 4300 [2022-11-20 10:36:25,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:25,089 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 373 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:25,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1133 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-11-20 10:36:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 4030. [2022-11-20 10:36:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 2993 states have (on average 1.3087203474774474) internal successors, (3917), 3037 states have internal predecessors, (3917), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-11-20 10:36:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5261 transitions. [2022-11-20 10:36:25,946 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5261 transitions. Word has length 101 [2022-11-20 10:36:25,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:25,947 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 5261 transitions. [2022-11-20 10:36:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5261 transitions. [2022-11-20 10:36:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 10:36:25,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:25,950 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:25,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:36:25,950 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:25,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1760044486, now seen corresponding path program 1 times [2022-11-20 10:36:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:25,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513091428] [2022-11-20 10:36:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:36:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:36:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:36:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:36:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 10:36:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:36:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 10:36:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:36:26,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:26,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513091428] [2022-11-20 10:36:26,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513091428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:26,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:26,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977885264] [2022-11-20 10:36:26,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:26,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:26,024 INFO L87 Difference]: Start difference. First operand 4030 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:27,280 INFO L93 Difference]: Finished difference Result 9092 states and 12309 transitions. [2022-11-20 10:36:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:27,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2022-11-20 10:36:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:27,305 INFO L225 Difference]: With dead ends: 9092 [2022-11-20 10:36:27,305 INFO L226 Difference]: Without dead ends: 5416 [2022-11-20 10:36:27,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:27,317 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 123 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:27,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 631 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2022-11-20 10:36:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 4036. [2022-11-20 10:36:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 2999 states have (on average 1.3081027009003001) internal successors, (3923), 3043 states have internal predecessors, (3923), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-11-20 10:36:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 5267 transitions. [2022-11-20 10:36:28,081 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 5267 transitions. Word has length 102 [2022-11-20 10:36:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:28,081 INFO L495 AbstractCegarLoop]: Abstraction has 4036 states and 5267 transitions. [2022-11-20 10:36:28,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 5267 transitions. [2022-11-20 10:36:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 10:36:28,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:28,085 INFO L195 NwaCegarLoop]: trace histogram [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 10:36:28,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 10:36:28,085 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1930890164, now seen corresponding path program 1 times [2022-11-20 10:36:28,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:28,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227345095] [2022-11-20 10:36:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:36:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:36:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:36:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 10:36:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:36:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 10:36:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:36:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:28,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227345095] [2022-11-20 10:36:28,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227345095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:28,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:28,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:28,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720880969] [2022-11-20 10:36:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:28,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:28,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:28,312 INFO L87 Difference]: Start difference. First operand 4036 states and 5267 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:29,227 INFO L93 Difference]: Finished difference Result 8476 states and 11323 transitions. [2022-11-20 10:36:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:29,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2022-11-20 10:36:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:29,246 INFO L225 Difference]: With dead ends: 8476 [2022-11-20 10:36:29,247 INFO L226 Difference]: Without dead ends: 4516 [2022-11-20 10:36:29,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:29,256 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 263 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:29,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 787 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2022-11-20 10:36:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 3681. [2022-11-20 10:36:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 2727 states have (on average 1.3182984965163183) internal successors, (3595), 2761 states have internal predecessors, (3595), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-11-20 10:36:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4835 transitions. [2022-11-20 10:36:29,811 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4835 transitions. Word has length 103 [2022-11-20 10:36:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:29,811 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 4835 transitions. [2022-11-20 10:36:29,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4835 transitions. [2022-11-20 10:36:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 10:36:29,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:29,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 10:36:29,815 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1500264054, now seen corresponding path program 1 times [2022-11-20 10:36:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:29,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604524703] [2022-11-20 10:36:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:36:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:36:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:36:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:36:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 10:36:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:36:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 10:36:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:36:29,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:29,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604524703] [2022-11-20 10:36:29,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604524703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:29,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:29,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:29,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129421563] [2022-11-20 10:36:29,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:29,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:29,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:29,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:29,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:29,904 INFO L87 Difference]: Start difference. First operand 3681 states and 4835 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:30,905 INFO L93 Difference]: Finished difference Result 8070 states and 10879 transitions. [2022-11-20 10:36:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:30,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-11-20 10:36:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:30,925 INFO L225 Difference]: With dead ends: 8070 [2022-11-20 10:36:30,925 INFO L226 Difference]: Without dead ends: 4570 [2022-11-20 10:36:30,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:30,934 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 123 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:30,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 625 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2022-11-20 10:36:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 3691. [2022-11-20 10:36:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2737 states have (on average 1.3171355498721227) internal successors, (3605), 2771 states have internal predecessors, (3605), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-11-20 10:36:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4845 transitions. [2022-11-20 10:36:31,736 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4845 transitions. Word has length 104 [2022-11-20 10:36:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:31,737 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 4845 transitions. [2022-11-20 10:36:31,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4845 transitions. [2022-11-20 10:36:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 10:36:31,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:31,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:31,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 10:36:31,740 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:31,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1445902481, now seen corresponding path program 1 times [2022-11-20 10:36:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:31,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866493019] [2022-11-20 10:36:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:36:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:36:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:36:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:36:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 10:36:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:36:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 10:36:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:36:31,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:31,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866493019] [2022-11-20 10:36:31,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866493019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:31,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:31,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:31,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287209846] [2022-11-20 10:36:31,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:31,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:31,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:31,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:31,913 INFO L87 Difference]: Start difference. First operand 3691 states and 4845 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:32,783 INFO L93 Difference]: Finished difference Result 8053 states and 10848 transitions. [2022-11-20 10:36:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:36:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-11-20 10:36:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:32,800 INFO L225 Difference]: With dead ends: 8053 [2022-11-20 10:36:32,800 INFO L226 Difference]: Without dead ends: 4481 [2022-11-20 10:36:32,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:32,809 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 211 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:32,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 804 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2022-11-20 10:36:33,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 2783. [2022-11-20 10:36:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2063 states have (on average 1.3116820164808531) internal successors, (2706), 2082 states have internal predecessors, (2706), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2022-11-20 10:36:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3644 transitions. [2022-11-20 10:36:33,420 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3644 transitions. Word has length 104 [2022-11-20 10:36:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:33,421 INFO L495 AbstractCegarLoop]: Abstraction has 2783 states and 3644 transitions. [2022-11-20 10:36:33,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:36:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3644 transitions. [2022-11-20 10:36:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 10:36:33,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:33,427 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:33,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 10:36:33,427 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash 486642331, now seen corresponding path program 1 times [2022-11-20 10:36:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:33,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138467322] [2022-11-20 10:36:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 10:36:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 10:36:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:36:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:36:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 10:36:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 10:36:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 10:36:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-20 10:36:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:33,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138467322] [2022-11-20 10:36:33,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138467322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:33,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097039588] [2022-11-20 10:36:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:33,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:33,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:33,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:36:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:34,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:36:34,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 10:36:34,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 10:36:34,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097039588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:34,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:34,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-20 10:36:34,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222251580] [2022-11-20 10:36:34,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:36:34,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:36:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:36:34,604 INFO L87 Difference]: Start difference. First operand 2783 states and 3644 transitions. Second operand has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-20 10:36:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:39,806 INFO L93 Difference]: Finished difference Result 9096 states and 12764 transitions. [2022-11-20 10:36:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:36:39,807 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 153 [2022-11-20 10:36:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:39,834 INFO L225 Difference]: With dead ends: 9096 [2022-11-20 10:36:39,834 INFO L226 Difference]: Without dead ends: 6563 [2022-11-20 10:36:39,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:36:39,843 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2682 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:39,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2682 Valid, 2340 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:36:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-11-20 10:36:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 3532. [2022-11-20 10:36:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 2623 states have (on average 1.3027068242470454) internal successors, (3417), 2647 states have internal predecessors, (3417), 585 states have call successors, (585), 323 states have call predecessors, (585), 323 states have return successors, (585), 561 states have call predecessors, (585), 585 states have call successors, (585) [2022-11-20 10:36:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4587 transitions. [2022-11-20 10:36:40,765 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4587 transitions. Word has length 153 [2022-11-20 10:36:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:40,766 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 4587 transitions. [2022-11-20 10:36:40,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-20 10:36:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4587 transitions. [2022-11-20 10:36:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-20 10:36:40,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:40,774 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:40,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:40,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:40,980 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1175059624, now seen corresponding path program 1 times [2022-11-20 10:36:40,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:40,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953687819] [2022-11-20 10:36:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:40,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:36:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:36:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:36:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:36:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:36:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:36:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:36:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 10:36:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 10:36:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 10:36:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:36:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 10:36:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 10:36:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 10:36:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-20 10:36:41,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:41,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953687819] [2022-11-20 10:36:41,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953687819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:41,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:41,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:36:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941132324] [2022-11-20 10:36:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:36:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:36:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:36:41,226 INFO L87 Difference]: Start difference. First operand 3532 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 10:36:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:43,820 INFO L93 Difference]: Finished difference Result 12118 states and 16493 transitions. [2022-11-20 10:36:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:36:43,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-11-20 10:36:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:43,855 INFO L225 Difference]: With dead ends: 12118 [2022-11-20 10:36:43,856 INFO L226 Difference]: Without dead ends: 8940 [2022-11-20 10:36:43,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:36:43,865 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 628 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 2429 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:36:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8940 states. [2022-11-20 10:36:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8940 to 6288. [2022-11-20 10:36:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6288 states, 4611 states have (on average 1.3029711559314683) internal successors, (6008), 4657 states have internal predecessors, (6008), 1095 states have call successors, (1095), 581 states have call predecessors, (1095), 581 states have return successors, (1095), 1049 states have call predecessors, (1095), 1095 states have call successors, (1095) [2022-11-20 10:36:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6288 states to 6288 states and 8198 transitions. [2022-11-20 10:36:45,135 INFO L78 Accepts]: Start accepts. Automaton has 6288 states and 8198 transitions. Word has length 162 [2022-11-20 10:36:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:45,136 INFO L495 AbstractCegarLoop]: Abstraction has 6288 states and 8198 transitions. [2022-11-20 10:36:45,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 10:36:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6288 states and 8198 transitions. [2022-11-20 10:36:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-20 10:36:45,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:45,148 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:45,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 10:36:45,148 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash -52637384, now seen corresponding path program 1 times [2022-11-20 10:36:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:45,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197592232] [2022-11-20 10:36:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:36:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:36:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:36:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:36:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:36:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:36:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:36:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:36:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:36:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 10:36:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 10:36:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:36:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 10:36:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 10:36:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 10:36:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-20 10:36:45,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:45,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197592232] [2022-11-20 10:36:45,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197592232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:45,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411820180] [2022-11-20 10:36:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:45,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:45,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:45,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:45,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:36:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:45,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:36:45,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:36:46,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-20 10:36:46,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411820180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:46,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:46,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-11-20 10:36:46,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702302961] [2022-11-20 10:36:46,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:46,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:36:46,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:36:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:36:46,593 INFO L87 Difference]: Start difference. First operand 6288 states and 8198 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-20 10:37:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:03,105 INFO L93 Difference]: Finished difference Result 29181 states and 39381 transitions. [2022-11-20 10:37:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-20 10:37:03,105 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 162 [2022-11-20 10:37:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:03,203 INFO L225 Difference]: With dead ends: 29181 [2022-11-20 10:37:03,204 INFO L226 Difference]: Without dead ends: 23173 [2022-11-20 10:37:03,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5081 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-11-20 10:37:03,223 INFO L413 NwaCegarLoop]: 1478 mSDtfsCounter, 5085 mSDsluCounter, 11644 mSDsCounter, 0 mSdLazyCounter, 5862 mSolverCounterSat, 3469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5085 SdHoareTripleChecker+Valid, 13122 SdHoareTripleChecker+Invalid, 9331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3469 IncrementalHoareTripleChecker+Valid, 5862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:03,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5085 Valid, 13122 Invalid, 9331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3469 Valid, 5862 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-20 10:37:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23173 states. [2022-11-20 10:37:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23173 to 8387. [2022-11-20 10:37:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8387 states, 6194 states have (on average 1.3041653212786568) internal successors, (8078), 6252 states have internal predecessors, (8078), 1423 states have call successors, (1423), 769 states have call predecessors, (1423), 769 states have return successors, (1423), 1365 states have call predecessors, (1423), 1423 states have call successors, (1423) [2022-11-20 10:37:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8387 states to 8387 states and 10924 transitions. [2022-11-20 10:37:05,114 INFO L78 Accepts]: Start accepts. Automaton has 8387 states and 10924 transitions. Word has length 162 [2022-11-20 10:37:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:05,115 INFO L495 AbstractCegarLoop]: Abstraction has 8387 states and 10924 transitions. [2022-11-20 10:37:05,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-20 10:37:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8387 states and 10924 transitions. [2022-11-20 10:37:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 10:37:05,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:05,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:05,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:37:05,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:05,335 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1883995866, now seen corresponding path program 1 times [2022-11-20 10:37:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:05,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263600346] [2022-11-20 10:37:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:37:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:37:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:37:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:37:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:37:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:37:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:37:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:37:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:37:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 10:37:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 10:37:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 10:37:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 10:37:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 10:37:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 10:37:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:37:06,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:06,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263600346] [2022-11-20 10:37:06,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263600346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:06,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233559397] [2022-11-20 10:37:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:06,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:06,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:06,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:06,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:37:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:06,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:37:06,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 10:37:06,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 10:37:06,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233559397] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:06,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:06,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-11-20 10:37:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933020384] [2022-11-20 10:37:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:06,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:06,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:37:06,565 INFO L87 Difference]: Start difference. First operand 8387 states and 10924 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 10:37:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:08,006 INFO L93 Difference]: Finished difference Result 13717 states and 17918 transitions. [2022-11-20 10:37:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:37:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 166 [2022-11-20 10:37:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:08,031 INFO L225 Difference]: With dead ends: 13717 [2022-11-20 10:37:08,032 INFO L226 Difference]: Without dead ends: 5526 [2022-11-20 10:37:08,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:37:08,047 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 2 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:08,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 765 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2022-11-20 10:37:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5294. [2022-11-20 10:37:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 3912 states have (on average 1.3034253578732107) internal successors, (5099), 3946 states have internal predecessors, (5099), 901 states have call successors, (901), 480 states have call predecessors, (901), 480 states have return successors, (901), 867 states have call predecessors, (901), 901 states have call successors, (901) [2022-11-20 10:37:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 6901 transitions. [2022-11-20 10:37:09,322 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 6901 transitions. Word has length 166 [2022-11-20 10:37:09,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:09,323 INFO L495 AbstractCegarLoop]: Abstraction has 5294 states and 6901 transitions. [2022-11-20 10:37:09,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 10:37:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 6901 transitions. [2022-11-20 10:37:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 10:37:09,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:09,333 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:09,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-20 10:37:09,543 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash 981286631, now seen corresponding path program 1 times [2022-11-20 10:37:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:09,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587983586] [2022-11-20 10:37:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:37:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:37:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:37:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:37:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:37:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:37:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:37:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:37:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:37:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:37:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:37:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:37:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 10:37:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 10:37:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 10:37:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:37:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:10,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587983586] [2022-11-20 10:37:10,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587983586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:10,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074005154] [2022-11-20 10:37:10,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:10,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:10,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:10,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:10,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:37:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:10,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 10:37:10,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:37:11,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:37:12,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074005154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:12,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:37:12,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2022-11-20 10:37:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639146611] [2022-11-20 10:37:12,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:12,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:37:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:37:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:37:12,104 INFO L87 Difference]: Start difference. First operand 5294 states and 6901 transitions. Second operand has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2022-11-20 10:37:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:21,698 INFO L93 Difference]: Finished difference Result 20989 states and 29229 transitions. [2022-11-20 10:37:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-20 10:37:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 167 [2022-11-20 10:37:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:21,770 INFO L225 Difference]: With dead ends: 20989 [2022-11-20 10:37:21,770 INFO L226 Difference]: Without dead ends: 15948 [2022-11-20 10:37:21,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1304, Invalid=5338, Unknown=0, NotChecked=0, Total=6642 [2022-11-20 10:37:21,785 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2508 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 1286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1286 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:21,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2508 Valid, 2893 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1286 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 10:37:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15948 states. [2022-11-20 10:37:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15948 to 9196. [2022-11-20 10:37:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9196 states, 6903 states have (on average 1.3069679849340867) internal successors, (9022), 6957 states have internal predecessors, (9022), 1469 states have call successors, (1469), 823 states have call predecessors, (1469), 823 states have return successors, (1469), 1415 states have call predecessors, (1469), 1469 states have call successors, (1469) [2022-11-20 10:37:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9196 states to 9196 states and 11960 transitions. [2022-11-20 10:37:24,107 INFO L78 Accepts]: Start accepts. Automaton has 9196 states and 11960 transitions. Word has length 167 [2022-11-20 10:37:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:24,108 INFO L495 AbstractCegarLoop]: Abstraction has 9196 states and 11960 transitions. [2022-11-20 10:37:24,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2022-11-20 10:37:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 9196 states and 11960 transitions. [2022-11-20 10:37:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 10:37:24,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:24,127 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:24,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:24,335 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 926865534, now seen corresponding path program 1 times [2022-11-20 10:37:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9205400] [2022-11-20 10:37:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:37:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:37:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:37:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:37:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:37:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:37:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:37:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:37:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:37:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:37:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:37:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:37:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 10:37:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 10:37:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 10:37:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:37:25,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:25,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9205400] [2022-11-20 10:37:25,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9205400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:25,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406013719] [2022-11-20 10:37:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:25,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:25,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:25,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:25,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:37:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 10:37:25,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 73 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:37:27,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:37:28,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406013719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:28,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:37:28,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 27 [2022-11-20 10:37:28,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374493777] [2022-11-20 10:37:28,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:28,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:37:28,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:37:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:37:28,537 INFO L87 Difference]: Start difference. First operand 9196 states and 11960 transitions. Second operand has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-20 10:38:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:26,718 INFO L93 Difference]: Finished difference Result 29957 states and 41919 transitions. [2022-11-20 10:38:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-11-20 10:38:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 167 [2022-11-20 10:38:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:26,795 INFO L225 Difference]: With dead ends: 29957 [2022-11-20 10:38:26,796 INFO L226 Difference]: Without dead ends: 21025 [2022-11-20 10:38:26,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28943 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=8691, Invalid=57101, Unknown=0, NotChecked=0, Total=65792 [2022-11-20 10:38:26,824 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 8847 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 8207 mSolverCounterSat, 4317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8848 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 12524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4317 IncrementalHoareTripleChecker+Valid, 8207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:26,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8848 Valid, 5134 Invalid, 12524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4317 Valid, 8207 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-20 10:38:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21025 states. [2022-11-20 10:38:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21025 to 9240. [2022-11-20 10:38:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9240 states, 6937 states have (on average 1.305463456825717) internal successors, (9056), 6991 states have internal predecessors, (9056), 1474 states have call successors, (1474), 828 states have call predecessors, (1474), 828 states have return successors, (1474), 1420 states have call predecessors, (1474), 1474 states have call successors, (1474) [2022-11-20 10:38:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9240 states to 9240 states and 12004 transitions. [2022-11-20 10:38:29,538 INFO L78 Accepts]: Start accepts. Automaton has 9240 states and 12004 transitions. Word has length 167 [2022-11-20 10:38:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:29,538 INFO L495 AbstractCegarLoop]: Abstraction has 9240 states and 12004 transitions. [2022-11-20 10:38:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-20 10:38:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 9240 states and 12004 transitions. [2022-11-20 10:38:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 10:38:29,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:29,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:38:29,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:29,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-20 10:38:29,754 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1308252018, now seen corresponding path program 1 times [2022-11-20 10:38:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:29,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108570502] [2022-11-20 10:38:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:38:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:38:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:38:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:38:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:38:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:38:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:38:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:38:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:38:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 10:38:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 10:38:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 10:38:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 10:38:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 10:38:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:38:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 10:38:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:30,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108570502] [2022-11-20 10:38:30,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108570502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:30,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822762613] [2022-11-20 10:38:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:30,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:30,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:30,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:30,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:38:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:30,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:38:30,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 90 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 10:38:30,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 10:38:30,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822762613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:30,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:38:30,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-11-20 10:38:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335708964] [2022-11-20 10:38:30,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:30,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:38:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:38:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:38:30,756 INFO L87 Difference]: Start difference. First operand 9240 states and 12004 transitions. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 10:38:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:35,902 INFO L93 Difference]: Finished difference Result 25835 states and 33833 transitions. [2022-11-20 10:38:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:38:35,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 169 [2022-11-20 10:38:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:35,956 INFO L225 Difference]: With dead ends: 25835 [2022-11-20 10:38:35,956 INFO L226 Difference]: Without dead ends: 16859 [2022-11-20 10:38:35,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 363 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:38:35,976 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 516 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:35,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 2274 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:38:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16859 states. [2022-11-20 10:38:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16859 to 11808. [2022-11-20 10:38:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11808 states, 8933 states have (on average 1.292287025635285) internal successors, (11544), 9003 states have internal predecessors, (11544), 1811 states have call successors, (1811), 1063 states have call predecessors, (1811), 1063 states have return successors, (1811), 1741 states have call predecessors, (1811), 1811 states have call successors, (1811) [2022-11-20 10:38:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11808 states to 11808 states and 15166 transitions. [2022-11-20 10:38:39,886 INFO L78 Accepts]: Start accepts. Automaton has 11808 states and 15166 transitions. Word has length 169 [2022-11-20 10:38:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:39,886 INFO L495 AbstractCegarLoop]: Abstraction has 11808 states and 15166 transitions. [2022-11-20 10:38:39,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 10:38:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 11808 states and 15166 transitions. [2022-11-20 10:38:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 10:38:39,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:39,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:38:39,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:40,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 10:38:40,103 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:40,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash 494131333, now seen corresponding path program 1 times [2022-11-20 10:38:40,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:40,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647751721] [2022-11-20 10:38:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:40,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:38:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:38:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:38:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:38:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:38:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:38:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:38:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:38:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:38:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 10:38:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 10:38:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 10:38:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 10:38:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 10:38:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:38:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 10:38:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 10:38:40,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:40,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647751721] [2022-11-20 10:38:40,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647751721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:40,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:40,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:38:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707314500] [2022-11-20 10:38:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:38:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:38:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:40,375 INFO L87 Difference]: Start difference. First operand 11808 states and 15166 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:38:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:48,706 INFO L93 Difference]: Finished difference Result 33688 states and 44610 transitions. [2022-11-20 10:38:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:38:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 171 [2022-11-20 10:38:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:48,876 INFO L225 Difference]: With dead ends: 33688 [2022-11-20 10:38:48,876 INFO L226 Difference]: Without dead ends: 24670 [2022-11-20 10:38:48,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:38:48,893 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 504 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:48,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2545 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:38:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24670 states. [2022-11-20 10:38:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24670 to 17376. [2022-11-20 10:38:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 12966 states have (on average 1.283047971618078) internal successors, (16636), 13085 states have internal predecessors, (16636), 2809 states have call successors, (2809), 1600 states have call predecessors, (2809), 1600 states have return successors, (2809), 2690 states have call predecessors, (2809), 2809 states have call successors, (2809) [2022-11-20 10:38:53,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 22254 transitions. [2022-11-20 10:38:53,568 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 22254 transitions. Word has length 171 [2022-11-20 10:38:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:53,569 INFO L495 AbstractCegarLoop]: Abstraction has 17376 states and 22254 transitions. [2022-11-20 10:38:53,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:38:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 22254 transitions. [2022-11-20 10:38:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 10:38:53,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:53,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:38:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 10:38:53,587 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:53,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2126458504, now seen corresponding path program 1 times [2022-11-20 10:38:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:53,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478378836] [2022-11-20 10:38:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:38:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:38:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:38:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:38:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:38:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:38:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:38:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:38:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:38:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 10:38:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 10:38:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:38:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 10:38:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 10:38:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 10:38:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:38:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 10:38:54,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:54,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478378836] [2022-11-20 10:38:54,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478378836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:54,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525891484] [2022-11-20 10:38:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:54,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:54,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:54,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:54,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:38:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:54,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:38:54,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 10:38:54,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 10:38:55,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525891484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:55,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:38:55,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2022-11-20 10:38:55,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808696485] [2022-11-20 10:38:55,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:55,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:38:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:38:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:38:55,080 INFO L87 Difference]: Start difference. First operand 17376 states and 22254 transitions. Second operand has 19 states, 19 states have (on average 12.526315789473685) internal successors, (238), 19 states have internal predecessors, (238), 8 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2022-11-20 10:39:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:10,946 INFO L93 Difference]: Finished difference Result 40839 states and 53636 transitions. [2022-11-20 10:39:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-20 10:39:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.526315789473685) internal successors, (238), 19 states have internal predecessors, (238), 8 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) Word has length 172 [2022-11-20 10:39:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:11,044 INFO L225 Difference]: With dead ends: 40839 [2022-11-20 10:39:11,044 INFO L226 Difference]: Without dead ends: 24831 [2022-11-20 10:39:11,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=890, Invalid=4366, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 10:39:11,067 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 2513 mSDsluCounter, 6595 mSDsCounter, 0 mSdLazyCounter, 6101 mSolverCounterSat, 2096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 8197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2096 IncrementalHoareTripleChecker+Valid, 6101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:11,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 7459 Invalid, 8197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2096 Valid, 6101 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 10:39:11,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24831 states. [2022-11-20 10:39:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24831 to 16666. [2022-11-20 10:39:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16666 states, 12385 states have (on average 1.2811465482438433) internal successors, (15867), 12498 states have internal predecessors, (15867), 2734 states have call successors, (2734), 1546 states have call predecessors, (2734), 1546 states have return successors, (2734), 2621 states have call predecessors, (2734), 2734 states have call successors, (2734) [2022-11-20 10:39:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16666 states to 16666 states and 21335 transitions. [2022-11-20 10:39:16,014 INFO L78 Accepts]: Start accepts. Automaton has 16666 states and 21335 transitions. Word has length 172 [2022-11-20 10:39:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:16,015 INFO L495 AbstractCegarLoop]: Abstraction has 16666 states and 21335 transitions. [2022-11-20 10:39:16,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.526315789473685) internal successors, (238), 19 states have internal predecessors, (238), 8 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2022-11-20 10:39:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 16666 states and 21335 transitions. [2022-11-20 10:39:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-20 10:39:16,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:16,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:39:16,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:16,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:16,229 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1658950161, now seen corresponding path program 1 times [2022-11-20 10:39:16,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:16,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141921937] [2022-11-20 10:39:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:16,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:39:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:39:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:39:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:39:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:39:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:39:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:39:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:39:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:39:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:39:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:39:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 10:39:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 10:39:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 10:39:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 10:39:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 10:39:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 10:39:17,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:17,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141921937] [2022-11-20 10:39:17,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141921937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:17,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736732498] [2022-11-20 10:39:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:17,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:17,197 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:17,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:39:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:39:17,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 53 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:39:17,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 10:39:17,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736732498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:39:17,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:39:17,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2022-11-20 10:39:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548526416] [2022-11-20 10:39:17,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:17,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:39:17,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:39:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:39:17,964 INFO L87 Difference]: Start difference. First operand 16666 states and 21335 transitions. Second operand has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 18 states have internal predecessors, (240), 8 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-20 10:39:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:44,586 INFO L93 Difference]: Finished difference Result 41404 states and 55188 transitions. [2022-11-20 10:39:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-11-20 10:39:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 18 states have internal predecessors, (240), 8 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 8 states have call successors, (44) Word has length 177 [2022-11-20 10:39:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:44,680 INFO L225 Difference]: With dead ends: 41404 [2022-11-20 10:39:44,680 INFO L226 Difference]: Without dead ends: 26656 [2022-11-20 10:39:44,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9629 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3419, Invalid=22021, Unknown=0, NotChecked=0, Total=25440 [2022-11-20 10:39:44,709 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 3629 mSDsluCounter, 8552 mSDsCounter, 0 mSdLazyCounter, 7813 mSolverCounterSat, 3680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3629 SdHoareTripleChecker+Valid, 9853 SdHoareTripleChecker+Invalid, 11493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3680 IncrementalHoareTripleChecker+Valid, 7813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:44,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3629 Valid, 9853 Invalid, 11493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3680 Valid, 7813 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-20 10:39:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26656 states. [2022-11-20 10:39:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26656 to 16680. [2022-11-20 10:39:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16680 states, 12399 states have (on average 1.275586740866199) internal successors, (15816), 12512 states have internal predecessors, (15816), 2734 states have call successors, (2734), 1546 states have call predecessors, (2734), 1546 states have return successors, (2734), 2621 states have call predecessors, (2734), 2734 states have call successors, (2734) [2022-11-20 10:39:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16680 states to 16680 states and 21284 transitions. [2022-11-20 10:39:51,381 INFO L78 Accepts]: Start accepts. Automaton has 16680 states and 21284 transitions. Word has length 177 [2022-11-20 10:39:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:51,382 INFO L495 AbstractCegarLoop]: Abstraction has 16680 states and 21284 transitions. [2022-11-20 10:39:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 18 states have internal predecessors, (240), 8 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-20 10:39:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 16680 states and 21284 transitions. [2022-11-20 10:39:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 10:39:51,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:51,390 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:39:51,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:51,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:51,598 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:51,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:51,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1778707627, now seen corresponding path program 1 times [2022-11-20 10:39:51,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:51,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923479835] [2022-11-20 10:39:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:51,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:39:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:39:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:39:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:39:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:39:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:39:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:39:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:39:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:39:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:39:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 10:39:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 10:39:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 10:39:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 10:39:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 10:39:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 10:39:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 10:39:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:52,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923479835] [2022-11-20 10:39:52,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923479835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:52,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:52,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:39:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717847883] [2022-11-20 10:39:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:52,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:39:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:39:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:52,083 INFO L87 Difference]: Start difference. First operand 16680 states and 21284 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:40:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:01,059 INFO L93 Difference]: Finished difference Result 35084 states and 46017 transitions. [2022-11-20 10:40:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:40:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 178 [2022-11-20 10:40:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:01,119 INFO L225 Difference]: With dead ends: 35084 [2022-11-20 10:40:01,120 INFO L226 Difference]: Without dead ends: 20714 [2022-11-20 10:40:01,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:40:01,140 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 601 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:01,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 2085 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:40:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20714 states. [2022-11-20 10:40:06,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20714 to 16670. [2022-11-20 10:40:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16670 states, 12389 states have (on average 1.2741948502704012) internal successors, (15786), 12502 states have internal predecessors, (15786), 2734 states have call successors, (2734), 1546 states have call predecessors, (2734), 1546 states have return successors, (2734), 2621 states have call predecessors, (2734), 2734 states have call successors, (2734) [2022-11-20 10:40:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16670 states to 16670 states and 21254 transitions. [2022-11-20 10:40:06,474 INFO L78 Accepts]: Start accepts. Automaton has 16670 states and 21254 transitions. Word has length 178 [2022-11-20 10:40:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:06,474 INFO L495 AbstractCegarLoop]: Abstraction has 16670 states and 21254 transitions. [2022-11-20 10:40:06,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:40:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 16670 states and 21254 transitions. [2022-11-20 10:40:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 10:40:06,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:06,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:40:06,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 10:40:06,480 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2012173287, now seen corresponding path program 1 times [2022-11-20 10:40:06,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:06,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145658205] [2022-11-20 10:40:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:40:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:40:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:40:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:40:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:40:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:40:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:40:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:40:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:40:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 10:40:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:40:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:40:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 10:40:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 10:40:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 10:40:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-20 10:40:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-20 10:40:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:07,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145658205] [2022-11-20 10:40:07,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145658205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:07,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561038058] [2022-11-20 10:40:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:07,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:07,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:07,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:07,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:40:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:07,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:40:07,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 28 proven. 54 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:40:07,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-20 10:40:07,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561038058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:07,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:40:07,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-11-20 10:40:07,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610559640] [2022-11-20 10:40:07,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:07,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:40:07,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:07,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:40:07,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:40:07,899 INFO L87 Difference]: Start difference. First operand 16670 states and 21254 transitions. Second operand has 16 states, 16 states have (on average 15.1875) internal successors, (243), 15 states have internal predecessors, (243), 7 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-11-20 10:40:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:36,126 INFO L93 Difference]: Finished difference Result 53755 states and 72813 transitions. [2022-11-20 10:40:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-20 10:40:36,127 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.1875) internal successors, (243), 15 states have internal predecessors, (243), 7 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) Word has length 178 [2022-11-20 10:40:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:36,259 INFO L225 Difference]: With dead ends: 53755 [2022-11-20 10:40:36,259 INFO L226 Difference]: Without dead ends: 38292 [2022-11-20 10:40:36,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 460 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1944, Invalid=12336, Unknown=0, NotChecked=0, Total=14280 [2022-11-20 10:40:36,292 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 3146 mSDsluCounter, 8118 mSDsCounter, 0 mSdLazyCounter, 8745 mSolverCounterSat, 3125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 9347 SdHoareTripleChecker+Invalid, 11870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3125 IncrementalHoareTripleChecker+Valid, 8745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:36,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 9347 Invalid, 11870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3125 Valid, 8745 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-20 10:40:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38292 states. [2022-11-20 10:40:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38292 to 20911. [2022-11-20 10:40:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20911 states, 15496 states have (on average 1.2762648425400103) internal successors, (19777), 15646 states have internal predecessors, (19777), 3464 states have call successors, (3464), 1950 states have call predecessors, (3464), 1950 states have return successors, (3464), 3314 states have call predecessors, (3464), 3464 states have call successors, (3464) [2022-11-20 10:40:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20911 states to 20911 states and 26705 transitions. [2022-11-20 10:40:43,456 INFO L78 Accepts]: Start accepts. Automaton has 20911 states and 26705 transitions. Word has length 178 [2022-11-20 10:40:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:43,457 INFO L495 AbstractCegarLoop]: Abstraction has 20911 states and 26705 transitions. [2022-11-20 10:40:43,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.1875) internal successors, (243), 15 states have internal predecessors, (243), 7 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-11-20 10:40:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 20911 states and 26705 transitions. [2022-11-20 10:40:43,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:40:43,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:43,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:40:43,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:43,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:43,664 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1051233495, now seen corresponding path program 1 times [2022-11-20 10:40:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:43,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825064704] [2022-11-20 10:40:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:40:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:40:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:40:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:40:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:40:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:40:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:40:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:40:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:40:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:40:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 10:40:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 10:40:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 10:40:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:40:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 10:40:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 10:40:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 10:40:44,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:44,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825064704] [2022-11-20 10:40:44,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825064704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:44,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236477742] [2022-11-20 10:40:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:44,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:44,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:44,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7060ffda-b60e-4e84-83b3-081108bfcb5c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:40:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:44,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:40:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 10:40:44,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 10:40:44,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236477742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:40:44,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:40:44,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-11-20 10:40:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986999013] [2022-11-20 10:40:44,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:44,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:40:44,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:40:44,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:40:44,834 INFO L87 Difference]: Start difference. First operand 20911 states and 26705 transitions. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 10:40:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:55,634 INFO L93 Difference]: Finished difference Result 48591 states and 63877 transitions. [2022-11-20 10:40:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:40:55,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 179 [2022-11-20 10:40:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:55,718 INFO L225 Difference]: With dead ends: 48591 [2022-11-20 10:40:55,719 INFO L226 Difference]: Without dead ends: 27860 [2022-11-20 10:40:55,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 385 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:40:55,752 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 220 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:55,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 2355 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:40:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27860 states.