./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a --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 4edad7c083448b81b05575191757512095bfff0f094103ddb1a592d0cd702494 --- 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-b5237d8 [2022-11-21 13:49:48,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:49:48,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:49:48,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:49:48,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:49:48,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:49:48,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:49:48,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:49:48,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:49:48,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:49:48,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:49:48,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:49:48,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:49:48,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:49:48,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:49:48,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:49:48,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:49:48,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:49:48,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:49:48,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:49:48,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:49:48,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:49:48,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:49:48,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:49:48,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:49:48,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:49:48,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:49:48,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:49:48,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:49:48,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:49:48,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:49:48,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:49:48,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:49:48,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:49:48,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:49:48,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:49:48,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:49:48,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:49:48,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:49:48,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:49:48,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:49:48,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:49:48,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:49:48,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:49:48,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:49:48,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:49:48,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:49:48,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:49:48,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:49:48,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:49:48,624 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:49:48,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:49:48,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:49:48,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:49:48,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:49:48,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:49:48,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:49:48,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:49:48,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:49:48,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:49:48,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:49:48,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:49:48,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:49:48,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:49:48,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:49:48,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:49:48,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:49:48,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:49:48,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:49:48,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:49:48,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:49:48,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:49:48,630 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:49:48,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:49:48,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:49:48,631 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_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4edad7c083448b81b05575191757512095bfff0f094103ddb1a592d0cd702494 [2022-11-21 13:49:48,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:49:48,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:49:48,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:49:48,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:49:48,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:49:48,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/systemc/transmitter.03.cil.c [2022-11-21 13:49:52,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:49:52,241 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:49:52,241 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/sv-benchmarks/c/systemc/transmitter.03.cil.c [2022-11-21 13:49:52,252 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/data/6c3d07448/2027f0432e584df5892382b60a7a426e/FLAG477553fa5 [2022-11-21 13:49:52,266 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/data/6c3d07448/2027f0432e584df5892382b60a7a426e [2022-11-21 13:49:52,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:49:52,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:49:52,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:49:52,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:49:52,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:49:52,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf28ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52, skipping insertion in model container [2022-11-21 13:49:52,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:49:52,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:49:52,459 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_307c6640-b47b-4888-8a8c-a62591ff24e6/sv-benchmarks/c/systemc/transmitter.03.cil.c[706,719] [2022-11-21 13:49:52,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:49:52,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:49:52,548 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_307c6640-b47b-4888-8a8c-a62591ff24e6/sv-benchmarks/c/systemc/transmitter.03.cil.c[706,719] [2022-11-21 13:49:52,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:49:52,610 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:49:52,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52 WrapperNode [2022-11-21 13:49:52,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:49:52,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:49:52,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:49:52,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:49:52,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,672 INFO L138 Inliner]: procedures = 34, calls = 39, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 321 [2022-11-21 13:49:52,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:49:52,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:49:52,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:49:52,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:49:52,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,744 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:49:52,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:49:52,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:49:52,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:49:52,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (1/1) ... [2022-11-21 13:49:52,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:49:52,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:49:52,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:49:52,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:49:52,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:49:52,838 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-21 13:49:52,838 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-21 13:49:52,838 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-21 13:49:52,838 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-21 13:49:52,838 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 13:49:52,838 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 13:49:52,839 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-21 13:49:52,839 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-21 13:49:52,839 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-21 13:49:52,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-21 13:49:52,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:49:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-21 13:49:52,840 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-21 13:49:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:49:52,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:49:52,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:49:52,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:49:53,446 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:49:53,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:49:53,455 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 13:49:53,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:53 BoogieIcfgContainer [2022-11-21 13:49:53,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:49:53,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:49:53,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:49:53,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:49:53,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:52" (1/3) ... [2022-11-21 13:49:53,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b132b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:53, skipping insertion in model container [2022-11-21 13:49:53,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:52" (2/3) ... [2022-11-21 13:49:53,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b132b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:53, skipping insertion in model container [2022-11-21 13:49:53,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:53" (3/3) ... [2022-11-21 13:49:53,487 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.03.cil.c [2022-11-21 13:49:53,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:49:53,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:49:53,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:49:53,588 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;@4e6b159c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:49:53,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:49:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-21 13:49:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:49:53,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:53,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:53,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash 377890557, now seen corresponding path program 1 times [2022-11-21 13:49:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533580668] [2022-11-21 13:49:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:49:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:54,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:49:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:49:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:49:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:49:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:54,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:54,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533580668] [2022-11-21 13:49:54,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533580668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:54,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:54,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:49:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077812316] [2022-11-21 13:49:54,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:54,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:49:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:49:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:49:54,277 INFO L87 Difference]: Start difference. First operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:49:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:55,622 INFO L93 Difference]: Finished difference Result 516 states and 818 transitions. [2022-11-21 13:49:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:49:55,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:49:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:55,654 INFO L225 Difference]: With dead ends: 516 [2022-11-21 13:49:55,655 INFO L226 Difference]: Without dead ends: 366 [2022-11-21 13:49:55,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:49:55,667 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 511 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:55,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 551 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:49:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-21 13:49:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 284. [2022-11-21 13:49:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 243 states have (on average 1.48559670781893) internal successors, (361), 245 states have internal predecessors, (361), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-11-21 13:49:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 418 transitions. [2022-11-21 13:49:55,771 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 418 transitions. Word has length 79 [2022-11-21 13:49:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:55,773 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 418 transitions. [2022-11-21 13:49:55,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:49:55,773 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 418 transitions. [2022-11-21 13:49:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:49:55,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:55,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:55,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:49:55,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash -76002114, now seen corresponding path program 1 times [2022-11-21 13:49:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:55,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228157743] [2022-11-21 13:49:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:55,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:49:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:49:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:49:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:49:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:49:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:56,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228157743] [2022-11-21 13:49:56,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228157743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:56,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:56,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:49:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435184503] [2022-11-21 13:49:56,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:49:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:49:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:56,058 INFO L87 Difference]: Start difference. First operand 284 states and 418 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:49:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:57,630 INFO L93 Difference]: Finished difference Result 871 states and 1299 transitions. [2022-11-21 13:49:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:49:57,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:49:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:57,635 INFO L225 Difference]: With dead ends: 871 [2022-11-21 13:49:57,635 INFO L226 Difference]: Without dead ends: 598 [2022-11-21 13:49:57,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:49:57,638 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 544 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:57,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 937 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:49:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-21 13:49:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 413. [2022-11-21 13:49:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 354 states have (on average 1.4774011299435028) internal successors, (523), 357 states have internal predecessors, (523), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-11-21 13:49:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 604 transitions. [2022-11-21 13:49:57,727 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 604 transitions. Word has length 79 [2022-11-21 13:49:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:57,728 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 604 transitions. [2022-11-21 13:49:57,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:49:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 604 transitions. [2022-11-21 13:49:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:49:57,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:57,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:57,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:49:57,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash -130395012, now seen corresponding path program 1 times [2022-11-21 13:49:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:57,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570018206] [2022-11-21 13:49:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:57,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:49:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:49:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:57,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:49:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:57,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:49:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:57,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:49:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:57,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:57,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570018206] [2022-11-21 13:49:57,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570018206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:57,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:57,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:49:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035662038] [2022-11-21 13:49:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:49:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:49:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:57,909 INFO L87 Difference]: Start difference. First operand 413 states and 604 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:49:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:59,443 INFO L93 Difference]: Finished difference Result 1334 states and 1979 transitions. [2022-11-21 13:49:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:49:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:49:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:59,450 INFO L225 Difference]: With dead ends: 1334 [2022-11-21 13:49:59,450 INFO L226 Difference]: Without dead ends: 932 [2022-11-21 13:49:59,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:49:59,453 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 539 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:59,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 935 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:49:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-11-21 13:49:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 674. [2022-11-21 13:49:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 579 states have (on average 1.471502590673575) internal successors, (852), 584 states have internal predecessors, (852), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-21 13:49:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 985 transitions. [2022-11-21 13:49:59,555 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 985 transitions. Word has length 79 [2022-11-21 13:49:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:59,556 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 985 transitions. [2022-11-21 13:49:59,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:49:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 985 transitions. [2022-11-21 13:49:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:49:59,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:59,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:59,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:49:59,559 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:49:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash -547791618, now seen corresponding path program 1 times [2022-11-21 13:49:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:49:59,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156510959] [2022-11-21 13:49:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:59,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:49:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:49:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:49:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:59,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:49:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:49:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:49:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:49:59,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:49:59,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156510959] [2022-11-21 13:49:59,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156510959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:49:59,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:49:59,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:49:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701418730] [2022-11-21 13:49:59,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:49:59,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:49:59,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:49:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:49:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:49:59,727 INFO L87 Difference]: Start difference. First operand 674 states and 985 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:01,469 INFO L93 Difference]: Finished difference Result 2399 states and 3538 transitions. [2022-11-21 13:50:01,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 13:50:01,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:01,480 INFO L225 Difference]: With dead ends: 2399 [2022-11-21 13:50:01,480 INFO L226 Difference]: Without dead ends: 1736 [2022-11-21 13:50:01,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:50:01,484 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 561 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:01,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 925 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:50:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-11-21 13:50:01,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1183. [2022-11-21 13:50:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1020 states have (on average 1.4725490196078432) internal successors, (1502), 1029 states have internal predecessors, (1502), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-11-21 13:50:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1737 transitions. [2022-11-21 13:50:01,602 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1737 transitions. Word has length 79 [2022-11-21 13:50:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:01,603 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1737 transitions. [2022-11-21 13:50:01,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:01,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1737 transitions. [2022-11-21 13:50:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:50:01,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:01,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:50:01,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 131480636, now seen corresponding path program 1 times [2022-11-21 13:50:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:01,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411834256] [2022-11-21 13:50:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:01,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411834256] [2022-11-21 13:50:01,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411834256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:01,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:01,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:01,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542229264] [2022-11-21 13:50:01,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:01,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:01,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:01,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:01,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:01,797 INFO L87 Difference]: Start difference. First operand 1183 states and 1737 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:03,436 INFO L93 Difference]: Finished difference Result 4210 states and 6212 transitions. [2022-11-21 13:50:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 13:50:03,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:03,452 INFO L225 Difference]: With dead ends: 4210 [2022-11-21 13:50:03,452 INFO L226 Difference]: Without dead ends: 3038 [2022-11-21 13:50:03,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:50:03,458 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 594 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:03,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 925 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:50:03,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-11-21 13:50:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2200. [2022-11-21 13:50:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4740157480314962) internal successors, (2808), 1922 states have internal predecessors, (2808), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-21 13:50:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3257 transitions. [2022-11-21 13:50:03,673 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3257 transitions. Word has length 79 [2022-11-21 13:50:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:03,674 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3257 transitions. [2022-11-21 13:50:03,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3257 transitions. [2022-11-21 13:50:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:50:03,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:03,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:03,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:50:03,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2093055294, now seen corresponding path program 1 times [2022-11-21 13:50:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:03,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3858469] [2022-11-21 13:50:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:03,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:03,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3858469] [2022-11-21 13:50:03,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3858469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:03,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:03,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837518936] [2022-11-21 13:50:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:03,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:03,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:03,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:03,855 INFO L87 Difference]: Start difference. First operand 2200 states and 3257 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:04,652 INFO L93 Difference]: Finished difference Result 4935 states and 7382 transitions. [2022-11-21 13:50:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:50:04,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:04,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:04,668 INFO L225 Difference]: With dead ends: 4935 [2022-11-21 13:50:04,669 INFO L226 Difference]: Without dead ends: 2746 [2022-11-21 13:50:04,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:50:04,678 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 436 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:04,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 384 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:50:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-21 13:50:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2200. [2022-11-21 13:50:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4650918635170604) internal successors, (2791), 1922 states have internal predecessors, (2791), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-21 13:50:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3240 transitions. [2022-11-21 13:50:04,924 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3240 transitions. Word has length 79 [2022-11-21 13:50:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:04,924 INFO L495 AbstractCegarLoop]: Abstraction has 2200 states and 3240 transitions. [2022-11-21 13:50:04,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3240 transitions. [2022-11-21 13:50:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:50:04,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:04,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:04,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:50:04,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:04,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:04,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2000088068, now seen corresponding path program 1 times [2022-11-21 13:50:04,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:04,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634078543] [2022-11-21 13:50:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:05,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634078543] [2022-11-21 13:50:05,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634078543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:05,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:05,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:05,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793691200] [2022-11-21 13:50:05,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:05,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:05,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:05,136 INFO L87 Difference]: Start difference. First operand 2200 states and 3240 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:06,321 INFO L93 Difference]: Finished difference Result 4844 states and 7190 transitions. [2022-11-21 13:50:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:50:06,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:06,334 INFO L225 Difference]: With dead ends: 4844 [2022-11-21 13:50:06,334 INFO L226 Difference]: Without dead ends: 2656 [2022-11-21 13:50:06,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:50:06,344 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 354 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:06,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 644 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 13:50:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2022-11-21 13:50:06,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2203. [2022-11-21 13:50:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1908 states have (on average 1.4559748427672956) internal successors, (2778), 1925 states have internal predecessors, (2778), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-21 13:50:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3227 transitions. [2022-11-21 13:50:06,587 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3227 transitions. Word has length 79 [2022-11-21 13:50:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:06,591 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3227 transitions. [2022-11-21 13:50:06,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3227 transitions. [2022-11-21 13:50:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:50:06,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:06,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:06,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:50:06,597 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash 266293118, now seen corresponding path program 1 times [2022-11-21 13:50:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779660726] [2022-11-21 13:50:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:06,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:06,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779660726] [2022-11-21 13:50:06,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779660726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:06,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:06,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141034660] [2022-11-21 13:50:06,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:06,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:06,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:06,758 INFO L87 Difference]: Start difference. First operand 2203 states and 3227 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:08,037 INFO L93 Difference]: Finished difference Result 5438 states and 8009 transitions. [2022-11-21 13:50:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:50:08,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:08,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:08,056 INFO L225 Difference]: With dead ends: 5438 [2022-11-21 13:50:08,056 INFO L226 Difference]: Without dead ends: 3247 [2022-11-21 13:50:08,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:50:08,065 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 354 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:08,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 641 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:50:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-11-21 13:50:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 2254. [2022-11-21 13:50:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1959 states have (on average 1.444104134762634) internal successors, (2829), 1976 states have internal predecessors, (2829), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-21 13:50:08,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3278 transitions. [2022-11-21 13:50:08,320 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3278 transitions. Word has length 79 [2022-11-21 13:50:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:08,320 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 3278 transitions. [2022-11-21 13:50:08,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3278 transitions. [2022-11-21 13:50:08,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:50:08,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:08,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:08,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:50:08,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1159779456, now seen corresponding path program 1 times [2022-11-21 13:50:08,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:08,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107189831] [2022-11-21 13:50:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:08,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:08,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107189831] [2022-11-21 13:50:08,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107189831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:08,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:08,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356693232] [2022-11-21 13:50:08,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:08,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:08,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:08,500 INFO L87 Difference]: Start difference. First operand 2254 states and 3278 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:11,094 INFO L93 Difference]: Finished difference Result 10055 states and 14924 transitions. [2022-11-21 13:50:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 13:50:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:11,137 INFO L225 Difference]: With dead ends: 10055 [2022-11-21 13:50:11,137 INFO L226 Difference]: Without dead ends: 7813 [2022-11-21 13:50:11,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:50:11,153 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1427 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:11,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 797 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:50:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-11-21 13:50:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 6425. [2022-11-21 13:50:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 5567 states have (on average 1.445841566373271) internal successors, (8049), 5634 states have internal predecessors, (8049), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2022-11-21 13:50:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 9385 transitions. [2022-11-21 13:50:12,034 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 9385 transitions. Word has length 79 [2022-11-21 13:50:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:12,034 INFO L495 AbstractCegarLoop]: Abstraction has 6425 states and 9385 transitions. [2022-11-21 13:50:12,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 9385 transitions. [2022-11-21 13:50:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:50:12,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:12,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:12,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:50:12,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:12,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1236657535, now seen corresponding path program 1 times [2022-11-21 13:50:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:12,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953851161] [2022-11-21 13:50:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:12,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:12,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:12,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953851161] [2022-11-21 13:50:12,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953851161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:12,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:12,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330735301] [2022-11-21 13:50:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:12,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:12,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:12,216 INFO L87 Difference]: Start difference. First operand 6425 states and 9385 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:14,226 INFO L93 Difference]: Finished difference Result 14892 states and 22145 transitions. [2022-11-21 13:50:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:50:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:14,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:14,284 INFO L225 Difference]: With dead ends: 14892 [2022-11-21 13:50:14,284 INFO L226 Difference]: Without dead ends: 8479 [2022-11-21 13:50:14,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:50:14,304 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 315 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:14,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 641 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:50:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8479 states. [2022-11-21 13:50:15,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8479 to 6503. [2022-11-21 13:50:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 5645 states have (on average 1.4350752878653676) internal successors, (8101), 5712 states have internal predecessors, (8101), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2022-11-21 13:50:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 9437 transitions. [2022-11-21 13:50:15,127 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 9437 transitions. Word has length 79 [2022-11-21 13:50:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:15,127 INFO L495 AbstractCegarLoop]: Abstraction has 6503 states and 9437 transitions. [2022-11-21 13:50:15,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:15,128 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 9437 transitions. [2022-11-21 13:50:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:50:15,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:15,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:15,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:50:15,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1212942595, now seen corresponding path program 1 times [2022-11-21 13:50:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:15,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071664591] [2022-11-21 13:50:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:15,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071664591] [2022-11-21 13:50:15,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071664591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:15,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:15,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420115693] [2022-11-21 13:50:15,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:15,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:15,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:15,274 INFO L87 Difference]: Start difference. First operand 6503 states and 9437 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:19,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:19,117 INFO L93 Difference]: Finished difference Result 21917 states and 32003 transitions. [2022-11-21 13:50:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 13:50:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-11-21 13:50:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:19,183 INFO L225 Difference]: With dead ends: 21917 [2022-11-21 13:50:19,184 INFO L226 Difference]: Without dead ends: 15426 [2022-11-21 13:50:19,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:50:19,205 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1318 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:19,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 788 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 13:50:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15426 states. [2022-11-21 13:50:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15426 to 12725. [2022-11-21 13:50:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 11005 states have (on average 1.4299863698318946) internal successors, (15737), 11156 states have internal predecessors, (15737), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2022-11-21 13:50:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 18512 transitions. [2022-11-21 13:50:20,610 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 18512 transitions. Word has length 79 [2022-11-21 13:50:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:20,610 INFO L495 AbstractCegarLoop]: Abstraction has 12725 states and 18512 transitions. [2022-11-21 13:50:20,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 18512 transitions. [2022-11-21 13:50:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:20,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:20,621 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:50:20,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash -823536340, now seen corresponding path program 1 times [2022-11-21 13:50:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:20,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110060996] [2022-11-21 13:50:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:50:20,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:20,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110060996] [2022-11-21 13:50:20,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110060996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:20,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:20,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:20,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992132815] [2022-11-21 13:50:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:20,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:20,789 INFO L87 Difference]: Start difference. First operand 12725 states and 18512 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:23,716 INFO L93 Difference]: Finished difference Result 28548 states and 42518 transitions. [2022-11-21 13:50:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:50:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-21 13:50:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:23,784 INFO L225 Difference]: With dead ends: 28548 [2022-11-21 13:50:23,785 INFO L226 Difference]: Without dead ends: 15835 [2022-11-21 13:50:23,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:50:23,815 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 222 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:23,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 636 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:50:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15835 states. [2022-11-21 13:50:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15835 to 12881. [2022-11-21 13:50:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12881 states, 11161 states have (on average 1.4193172654780037) internal successors, (15841), 11312 states have internal predecessors, (15841), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2022-11-21 13:50:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12881 states to 12881 states and 18616 transitions. [2022-11-21 13:50:25,503 INFO L78 Accepts]: Start accepts. Automaton has 12881 states and 18616 transitions. Word has length 97 [2022-11-21 13:50:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:25,504 INFO L495 AbstractCegarLoop]: Abstraction has 12881 states and 18616 transitions. [2022-11-21 13:50:25,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12881 states and 18616 transitions. [2022-11-21 13:50:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:25,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:25,515 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:25,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:50:25,516 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1442844846, now seen corresponding path program 1 times [2022-11-21 13:50:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:25,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016039240] [2022-11-21 13:50:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:25,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:25,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:50:25,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:25,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016039240] [2022-11-21 13:50:25,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016039240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:25,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:25,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:50:25,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040333150] [2022-11-21 13:50:25,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:25,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:50:25,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:25,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:50:25,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:50:25,704 INFO L87 Difference]: Start difference. First operand 12881 states and 18616 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:31,091 INFO L93 Difference]: Finished difference Result 43294 states and 62971 transitions. [2022-11-21 13:50:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:50:31,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-21 13:50:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:31,225 INFO L225 Difference]: With dead ends: 43294 [2022-11-21 13:50:31,225 INFO L226 Difference]: Without dead ends: 30426 [2022-11-21 13:50:31,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:50:31,263 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 720 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:31,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 724 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:50:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30426 states. [2022-11-21 13:50:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30426 to 24791. [2022-11-21 13:50:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24791 states, 21405 states have (on average 1.4053258584442887) internal successors, (30081), 21788 states have internal predecessors, (30081), 1921 states have call successors, (1921), 1184 states have call predecessors, (1921), 1464 states have return successors, (3566), 1850 states have call predecessors, (3566), 1921 states have call successors, (3566) [2022-11-21 13:50:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24791 states to 24791 states and 35568 transitions. [2022-11-21 13:50:34,170 INFO L78 Accepts]: Start accepts. Automaton has 24791 states and 35568 transitions. Word has length 97 [2022-11-21 13:50:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:34,171 INFO L495 AbstractCegarLoop]: Abstraction has 24791 states and 35568 transitions. [2022-11-21 13:50:34,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24791 states and 35568 transitions. [2022-11-21 13:50:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:34,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:34,190 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:34,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:50:34,191 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:34,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:34,191 INFO L85 PathProgramCache]: Analyzing trace with hash -923849748, now seen corresponding path program 1 times [2022-11-21 13:50:34,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:34,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607137188] [2022-11-21 13:50:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:34,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:50:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:34,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607137188] [2022-11-21 13:50:34,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607137188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:34,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:34,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:50:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241652928] [2022-11-21 13:50:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:50:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:50:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:50:34,372 INFO L87 Difference]: Start difference. First operand 24791 states and 35568 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:38,335 INFO L93 Difference]: Finished difference Result 30360 states and 43543 transitions. [2022-11-21 13:50:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:50:38,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-21 13:50:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:38,422 INFO L225 Difference]: With dead ends: 30360 [2022-11-21 13:50:38,422 INFO L226 Difference]: Without dead ends: 17020 [2022-11-21 13:50:38,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:50:38,460 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 735 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:38,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 721 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:50:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17020 states. [2022-11-21 13:50:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17020 to 13265. [2022-11-21 13:50:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13265 states, 11442 states have (on average 1.3800034958923266) internal successors, (15790), 11633 states have internal predecessors, (15790), 1048 states have call successors, (1048), 640 states have call predecessors, (1048), 774 states have return successors, (1724), 1007 states have call predecessors, (1724), 1048 states have call successors, (1724) [2022-11-21 13:50:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13265 states to 13265 states and 18562 transitions. [2022-11-21 13:50:40,376 INFO L78 Accepts]: Start accepts. Automaton has 13265 states and 18562 transitions. Word has length 97 [2022-11-21 13:50:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:40,376 INFO L495 AbstractCegarLoop]: Abstraction has 13265 states and 18562 transitions. [2022-11-21 13:50:40,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13265 states and 18562 transitions. [2022-11-21 13:50:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:40,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:40,385 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:50:40,385 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:40,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -30363410, now seen corresponding path program 1 times [2022-11-21 13:50:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682619462] [2022-11-21 13:50:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:50:40,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:40,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682619462] [2022-11-21 13:50:40,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682619462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:40,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:40,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:50:40,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572120940] [2022-11-21 13:50:40,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:40,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:50:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:40,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:50:40,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:50:40,577 INFO L87 Difference]: Start difference. First operand 13265 states and 18562 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:43,169 INFO L93 Difference]: Finished difference Result 16782 states and 23535 transitions. [2022-11-21 13:50:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:50:43,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-21 13:50:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:43,201 INFO L225 Difference]: With dead ends: 16782 [2022-11-21 13:50:43,201 INFO L226 Difference]: Without dead ends: 9172 [2022-11-21 13:50:43,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:50:43,215 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 727 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:43,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 724 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:50:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2022-11-21 13:50:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 7349. [2022-11-21 13:50:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7349 states, 6338 states have (on average 1.3628905017355633) internal successors, (8638), 6433 states have internal predecessors, (8638), 592 states have call successors, (592), 356 states have call predecessors, (592), 418 states have return successors, (890), 567 states have call predecessors, (890), 592 states have call successors, (890) [2022-11-21 13:50:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7349 states to 7349 states and 10120 transitions. [2022-11-21 13:50:44,129 INFO L78 Accepts]: Start accepts. Automaton has 7349 states and 10120 transitions. Word has length 97 [2022-11-21 13:50:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:44,130 INFO L495 AbstractCegarLoop]: Abstraction has 7349 states and 10120 transitions. [2022-11-21 13:50:44,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7349 states and 10120 transitions. [2022-11-21 13:50:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:44,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:44,134 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:44,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:50:44,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2079751252, now seen corresponding path program 1 times [2022-11-21 13:50:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:44,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056457416] [2022-11-21 13:50:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:44,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:50:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:44,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056457416] [2022-11-21 13:50:44,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056457416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:44,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:44,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:50:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065981610] [2022-11-21 13:50:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:44,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:50:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:50:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:50:44,298 INFO L87 Difference]: Start difference. First operand 7349 states and 10120 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:47,140 INFO L93 Difference]: Finished difference Result 14511 states and 19925 transitions. [2022-11-21 13:50:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 13:50:47,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-21 13:50:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:47,165 INFO L225 Difference]: With dead ends: 14511 [2022-11-21 13:50:47,166 INFO L226 Difference]: Without dead ends: 8997 [2022-11-21 13:50:47,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:50:47,177 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 717 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:47,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 725 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 13:50:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2022-11-21 13:50:48,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 5444. [2022-11-21 13:50:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 4731 states have (on average 1.3472838723314309) internal successors, (6374), 4790 states have internal predecessors, (6374), 418 states have call successors, (418), 260 states have call predecessors, (418), 294 states have return successors, (552), 397 states have call predecessors, (552), 418 states have call successors, (552) [2022-11-21 13:50:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7344 transitions. [2022-11-21 13:50:48,063 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7344 transitions. Word has length 97 [2022-11-21 13:50:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:48,063 INFO L495 AbstractCegarLoop]: Abstraction has 5444 states and 7344 transitions. [2022-11-21 13:50:48,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7344 transitions. [2022-11-21 13:50:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:48,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:48,067 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:48,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:50:48,067 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1317822766, now seen corresponding path program 1 times [2022-11-21 13:50:48,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:48,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18704098] [2022-11-21 13:50:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:48,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:50:48,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:48,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18704098] [2022-11-21 13:50:48,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18704098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:48,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:48,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:50:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948699655] [2022-11-21 13:50:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:50:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:50:48,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:50:48,249 INFO L87 Difference]: Start difference. First operand 5444 states and 7344 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:50,662 INFO L93 Difference]: Finished difference Result 11742 states and 15872 transitions. [2022-11-21 13:50:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 13:50:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-21 13:50:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:50,683 INFO L225 Difference]: With dead ends: 11742 [2022-11-21 13:50:50,683 INFO L226 Difference]: Without dead ends: 7441 [2022-11-21 13:50:50,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:50:50,695 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 945 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:50,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 627 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 13:50:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2022-11-21 13:50:51,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 5365. [2022-11-21 13:50:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 4666 states have (on average 1.342477496785255) internal successors, (6264), 4711 states have internal predecessors, (6264), 418 states have call successors, (418), 260 states have call predecessors, (418), 280 states have return successors, (522), 395 states have call predecessors, (522), 418 states have call successors, (522) [2022-11-21 13:50:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7204 transitions. [2022-11-21 13:50:51,495 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7204 transitions. Word has length 97 [2022-11-21 13:50:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:51,495 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 7204 transitions. [2022-11-21 13:50:51,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7204 transitions. [2022-11-21 13:50:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:51,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:51,497 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 13:50:51,497 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1565969260, now seen corresponding path program 1 times [2022-11-21 13:50:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:51,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252830836] [2022-11-21 13:50:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:50:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252830836] [2022-11-21 13:50:51,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252830836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:51,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:51,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:51,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546566631] [2022-11-21 13:50:51,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:51,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:51,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:51,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:51,629 INFO L87 Difference]: Start difference. First operand 5365 states and 7204 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:53,590 INFO L93 Difference]: Finished difference Result 13848 states and 18568 transitions. [2022-11-21 13:50:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:50:53,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-11-21 13:50:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:53,610 INFO L225 Difference]: With dead ends: 13848 [2022-11-21 13:50:53,611 INFO L226 Difference]: Without dead ends: 8498 [2022-11-21 13:50:53,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:50:53,624 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 697 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:53,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 393 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:50:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2022-11-21 13:50:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 6336. [2022-11-21 13:50:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 5571 states have (on average 1.3055106803087417) internal successors, (7273), 5622 states have internal predecessors, (7273), 434 states have call successors, (434), 298 states have call predecessors, (434), 330 states have return successors, (598), 417 states have call predecessors, (598), 434 states have call successors, (598) [2022-11-21 13:50:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 8305 transitions. [2022-11-21 13:50:54,679 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 8305 transitions. Word has length 97 [2022-11-21 13:50:54,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:54,679 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 8305 transitions. [2022-11-21 13:50:54,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:50:54,679 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 8305 transitions. [2022-11-21 13:50:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 13:50:54,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:54,681 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 13:50:54,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 13:50:54,682 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:54,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1989615982, now seen corresponding path program 1 times [2022-11-21 13:50:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:54,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317988267] [2022-11-21 13:50:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:54,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 13:50:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 13:50:54,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:54,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317988267] [2022-11-21 13:50:54,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317988267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:50:54,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360772904] [2022-11-21 13:50:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:54,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:50:54,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:50:54,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:50:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:54,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:50:54,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:50:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:50:54,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:50:54,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360772904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:54,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:50:54,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-21 13:50:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79194035] [2022-11-21 13:50:54,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:54,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:50:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:54,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:50:54,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:54,940 INFO L87 Difference]: Start difference. First operand 6336 states and 8305 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:50:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:50:56,522 INFO L93 Difference]: Finished difference Result 17959 states and 23682 transitions. [2022-11-21 13:50:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:50:56,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 97 [2022-11-21 13:50:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:50:56,545 INFO L225 Difference]: With dead ends: 17959 [2022-11-21 13:50:56,546 INFO L226 Difference]: Without dead ends: 11638 [2022-11-21 13:50:56,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:56,558 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 174 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:50:56,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 594 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:50:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2022-11-21 13:50:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 11638. [2022-11-21 13:50:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11638 states, 10216 states have (on average 1.293265465935787) internal successors, (13212), 10309 states have internal predecessors, (13212), 806 states have call successors, (806), 554 states have call predecessors, (806), 615 states have return successors, (1185), 778 states have call predecessors, (1185), 806 states have call successors, (1185) [2022-11-21 13:50:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11638 states to 11638 states and 15203 transitions. [2022-11-21 13:50:58,135 INFO L78 Accepts]: Start accepts. Automaton has 11638 states and 15203 transitions. Word has length 97 [2022-11-21 13:50:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:50:58,135 INFO L495 AbstractCegarLoop]: Abstraction has 11638 states and 15203 transitions. [2022-11-21 13:50:58,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:50:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11638 states and 15203 transitions. [2022-11-21 13:50:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-21 13:50:58,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:50:58,141 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:50:58,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 13:50:58,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_307c6640-b47b-4888-8a8c-a62591ff24e6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:50:58,346 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:50:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:50:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash -487614150, now seen corresponding path program 1 times [2022-11-21 13:50:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:50:58,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842166072] [2022-11-21 13:50:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:50:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:50:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:50:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:50:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:50:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:50:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:50:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:50:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 13:50:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:50:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 13:50:58,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:50:58,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842166072] [2022-11-21 13:50:58,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842166072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:50:58,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:50:58,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:50:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937422871] [2022-11-21 13:50:58,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:50:58,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:50:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:50:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:50:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:50:58,596 INFO L87 Difference]: Start difference. First operand 11638 states and 15203 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:51:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:04,258 INFO L93 Difference]: Finished difference Result 40822 states and 53504 transitions. [2022-11-21 13:51:04,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:51:04,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2022-11-21 13:51:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:04,345 INFO L225 Difference]: With dead ends: 40822 [2022-11-21 13:51:04,345 INFO L226 Difference]: Without dead ends: 29205 [2022-11-21 13:51:04,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:51:04,366 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 861 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:04,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 567 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:51:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29205 states. [2022-11-21 13:51:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29205 to 25930. [2022-11-21 13:51:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25930 states, 22816 states have (on average 1.267093267882188) internal successors, (28910), 23200 states have internal predecessors, (28910), 1541 states have call successors, (1541), 1086 states have call predecessors, (1541), 1572 states have return successors, (3248), 1651 states have call predecessors, (3248), 1541 states have call successors, (3248) [2022-11-21 13:51:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25930 states to 25930 states and 33699 transitions. [2022-11-21 13:51:08,988 INFO L78 Accepts]: Start accepts. Automaton has 25930 states and 33699 transitions. Word has length 117 [2022-11-21 13:51:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:08,989 INFO L495 AbstractCegarLoop]: Abstraction has 25930 states and 33699 transitions. [2022-11-21 13:51:08,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:51:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 25930 states and 33699 transitions. [2022-11-21 13:51:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-21 13:51:08,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:08,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:08,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 13:51:08,999 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1526198724, now seen corresponding path program 1 times [2022-11-21 13:51:08,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:09,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984164162] [2022-11-21 13:51:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:09,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:51:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:51:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:51:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:51:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:51:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:51:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 13:51:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 13:51:09,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984164162] [2022-11-21 13:51:09,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984164162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:09,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:09,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:51:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570098180] [2022-11-21 13:51:09,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:09,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:51:09,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:51:09,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:51:09,084 INFO L87 Difference]: Start difference. First operand 25930 states and 33699 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:51:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:15,228 INFO L93 Difference]: Finished difference Result 57023 states and 74012 transitions. [2022-11-21 13:51:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:51:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2022-11-21 13:51:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:15,297 INFO L225 Difference]: With dead ends: 57023 [2022-11-21 13:51:15,297 INFO L226 Difference]: Without dead ends: 31110 [2022-11-21 13:51:15,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:51:15,331 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 437 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:15,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 281 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:51:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states. [2022-11-21 13:51:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31110 to 25916. [2022-11-21 13:51:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25916 states, 22812 states have (on average 1.267008591969139) internal successors, (28903), 23194 states have internal predecessors, (28903), 1531 states have call successors, (1531), 1086 states have call predecessors, (1531), 1572 states have return successors, (3232), 1639 states have call predecessors, (3232), 1531 states have call successors, (3232) [2022-11-21 13:51:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25916 states to 25916 states and 33666 transitions. [2022-11-21 13:51:19,867 INFO L78 Accepts]: Start accepts. Automaton has 25916 states and 33666 transitions. Word has length 117 [2022-11-21 13:51:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:19,867 INFO L495 AbstractCegarLoop]: Abstraction has 25916 states and 33666 transitions. [2022-11-21 13:51:19,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:51:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 25916 states and 33666 transitions. [2022-11-21 13:51:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 13:51:19,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:19,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:19,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 13:51:19,876 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:19,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1564913749, now seen corresponding path program 1 times [2022-11-21 13:51:19,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:19,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673016319] [2022-11-21 13:51:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:51:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:51:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:51:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:51:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:51:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:51:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:20,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 13:51:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 13:51:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:20,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673016319] [2022-11-21 13:51:20,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673016319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:20,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:20,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:51:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928538410] [2022-11-21 13:51:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:20,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:51:20,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:51:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:51:20,078 INFO L87 Difference]: Start difference. First operand 25916 states and 33666 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:51:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:30,388 INFO L93 Difference]: Finished difference Result 81211 states and 105672 transitions. [2022-11-21 13:51:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:51:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 118 [2022-11-21 13:51:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:30,521 INFO L225 Difference]: With dead ends: 81211 [2022-11-21 13:51:30,522 INFO L226 Difference]: Without dead ends: 55316 [2022-11-21 13:51:30,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:51:30,564 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 807 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:30,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 606 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:51:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55316 states. [2022-11-21 13:51:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55316 to 46265. [2022-11-21 13:51:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46265 states, 40435 states have (on average 1.25937925064919) internal successors, (50923), 41211 states have internal predecessors, (50923), 2885 states have call successors, (2885), 1996 states have call predecessors, (2885), 2944 states have return successors, (6455), 3065 states have call predecessors, (6455), 2885 states have call successors, (6455) [2022-11-21 13:51:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46265 states to 46265 states and 60263 transitions. [2022-11-21 13:51:39,327 INFO L78 Accepts]: Start accepts. Automaton has 46265 states and 60263 transitions. Word has length 118 [2022-11-21 13:51:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:51:39,327 INFO L495 AbstractCegarLoop]: Abstraction has 46265 states and 60263 transitions. [2022-11-21 13:51:39,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:51:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 46265 states and 60263 transitions. [2022-11-21 13:51:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 13:51:39,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:51:39,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:51:39,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 13:51:39,347 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:51:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 526329175, now seen corresponding path program 1 times [2022-11-21 13:51:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:39,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894086801] [2022-11-21 13:51:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:51:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:51:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:51:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:51:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 13:51:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 13:51:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 13:51:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 13:51:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:51:39,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894086801] [2022-11-21 13:51:39,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894086801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:51:39,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:51:39,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:51:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388023053] [2022-11-21 13:51:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:51:39,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:51:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:51:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:51:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:51:39,429 INFO L87 Difference]: Start difference. First operand 46265 states and 60263 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 13:51:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:51:51,531 INFO L93 Difference]: Finished difference Result 95055 states and 123901 transitions. [2022-11-21 13:51:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:51:51,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 118 [2022-11-21 13:51:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:51:51,672 INFO L225 Difference]: With dead ends: 95055 [2022-11-21 13:51:51,672 INFO L226 Difference]: Without dead ends: 48811 [2022-11-21 13:51:51,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:51:51,741 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 435 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:51:51,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 279 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:51:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48811 states.