./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.04.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.04.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa --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 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:09:20,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:09:20,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:09:20,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:09:20,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:09:20,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:09:20,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:09:20,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:09:20,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:09:20,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:09:20,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:09:20,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:09:20,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:09:20,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:09:20,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:09:20,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:09:20,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:09:20,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:09:20,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:09:20,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:09:20,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:09:20,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:09:20,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:09:20,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:09:20,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:09:20,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:09:20,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:09:20,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:09:20,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:09:20,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:09:20,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:09:20,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:09:20,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:09:20,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:09:20,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:09:20,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:09:20,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:09:20,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:09:20,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:09:20,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:09:20,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:09:20,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:09:20,664 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:09:20,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:09:20,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:09:20,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:09:20,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:09:20,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:09:20,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:09:20,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:09:20,667 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:09:20,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:09:20,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:09:20,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:09:20,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:09:20,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:09:20,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:09:20,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:09:20,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:09:20,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:09:20,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:09:20,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:09:20,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:09:20,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:09:20,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:09:20,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:09:20,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:09:20,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:09:20,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:09:20,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:09:20,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:09:20,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:09:20,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:09:20,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:09:20,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:09:20,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:09:20,670 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_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa [2021-12-06 19:09:20,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:09:20,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:09:20,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:09:20,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:09:20,873 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:09:20,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/systemc/transmitter.04.cil.c [2021-12-06 19:09:20,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/data/f71588da3/9ed782163a164d4dbc000321c170c1ec/FLAGdfe6ca866 [2021-12-06 19:09:21,310 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:09:21,310 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/sv-benchmarks/c/systemc/transmitter.04.cil.c [2021-12-06 19:09:21,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/data/f71588da3/9ed782163a164d4dbc000321c170c1ec/FLAGdfe6ca866 [2021-12-06 19:09:21,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/data/f71588da3/9ed782163a164d4dbc000321c170c1ec [2021-12-06 19:09:21,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:09:21,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:09:21,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:09:21,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:09:21,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:09:21,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b87dff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21, skipping insertion in model container [2021-12-06 19:09:21,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:09:21,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:09:21,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/sv-benchmarks/c/systemc/transmitter.04.cil.c[706,719] [2021-12-06 19:09:21,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:09:21,535 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:09:21,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/sv-benchmarks/c/systemc/transmitter.04.cil.c[706,719] [2021-12-06 19:09:21,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:09:21,579 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:09:21,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21 WrapperNode [2021-12-06 19:09:21,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:09:21,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:09:21,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:09:21,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:09:21,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,620 INFO L137 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 378 [2021-12-06 19:09:21,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:09:21,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:09:21,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:09:21,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:09:21,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:09:21,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:09:21,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:09:21,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:09:21,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (1/1) ... [2021-12-06 19:09:21,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:09:21,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:09:21,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:09:21,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81f99488-ed51-4064-9bf6-b5cb3c128ab3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:09:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:09:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 19:09:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 19:09:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 19:09:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 19:09:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 19:09:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 19:09:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 19:09:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 19:09:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 19:09:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 19:09:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:09:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 19:09:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 19:09:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:09:21,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:09:21,790 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:09:21,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:09:22,067 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:09:22,074 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:09:22,074 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-06 19:09:22,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:09:22 BoogieIcfgContainer [2021-12-06 19:09:22,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:09:22,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:09:22,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:09:22,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:09:22,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:09:21" (1/3) ... [2021-12-06 19:09:22,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1b97b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:09:22, skipping insertion in model container [2021-12-06 19:09:22,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:09:21" (2/3) ... [2021-12-06 19:09:22,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1b97b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:09:22, skipping insertion in model container [2021-12-06 19:09:22,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:09:22" (3/3) ... [2021-12-06 19:09:22,082 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2021-12-06 19:09:22,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:09:22,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:09:22,123 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:09:22,129 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:09:22,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:09:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 19:09:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:22,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:22,154 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:22,155 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:22,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1239760114, now seen corresponding path program 1 times [2021-12-06 19:09:22,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:22,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216010857] [2021-12-06 19:09:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:22,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:22,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:22,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:22,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:22,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216010857] [2021-12-06 19:09:22,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216010857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:22,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:22,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:09:22,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287753445] [2021-12-06 19:09:22,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:22,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:09:22,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:09:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:09:22,499 INFO L87 Difference]: Start difference. First operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:09:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:23,026 INFO L93 Difference]: Finished difference Result 394 states and 628 transitions. [2021-12-06 19:09:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:09:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:23,042 INFO L225 Difference]: With dead ends: 394 [2021-12-06 19:09:23,042 INFO L226 Difference]: Without dead ends: 224 [2021-12-06 19:09:23,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:09:23,051 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 411 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:23,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 570 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:09:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-06 19:09:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 173. [2021-12-06 19:09:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 149 states have (on average 1.4966442953020134) internal successors, (223), 150 states have internal predecessors, (223), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 19:09:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2021-12-06 19:09:23,098 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 91 [2021-12-06 19:09:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:23,098 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 257 transitions. [2021-12-06 19:09:23,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:09:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 257 transitions. [2021-12-06 19:09:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:23,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:23,102 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:23,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:09:23,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1212694512, now seen corresponding path program 1 times [2021-12-06 19:09:23,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:23,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135318320] [2021-12-06 19:09:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:23,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:23,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:23,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135318320] [2021-12-06 19:09:23,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135318320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:23,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:23,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:23,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443677437] [2021-12-06 19:09:23,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:23,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:23,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:23,211 INFO L87 Difference]: Start difference. First operand 173 states and 257 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:23,632 INFO L93 Difference]: Finished difference Result 393 states and 598 transitions. [2021-12-06 19:09:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:09:23,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:23,636 INFO L225 Difference]: With dead ends: 393 [2021-12-06 19:09:23,636 INFO L226 Difference]: Without dead ends: 232 [2021-12-06 19:09:23,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:09:23,638 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 433 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:23,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 678 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:09:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-06 19:09:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 173. [2021-12-06 19:09:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 149 states have (on average 1.4899328859060403) internal successors, (222), 150 states have internal predecessors, (222), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 19:09:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 256 transitions. [2021-12-06 19:09:23,656 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 256 transitions. Word has length 91 [2021-12-06 19:09:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:23,657 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 256 transitions. [2021-12-06 19:09:23,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 256 transitions. [2021-12-06 19:09:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:23,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:23,658 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:23,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:09:23,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:23,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:23,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1004935886, now seen corresponding path program 1 times [2021-12-06 19:09:23,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:23,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677911275] [2021-12-06 19:09:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:23,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:23,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:23,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677911275] [2021-12-06 19:09:23,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677911275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:23,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:23,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:23,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417752799] [2021-12-06 19:09:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:23,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:23,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:23,757 INFO L87 Difference]: Start difference. First operand 173 states and 256 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:24,137 INFO L93 Difference]: Finished difference Result 383 states and 579 transitions. [2021-12-06 19:09:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:09:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:24,139 INFO L225 Difference]: With dead ends: 383 [2021-12-06 19:09:24,139 INFO L226 Difference]: Without dead ends: 222 [2021-12-06 19:09:24,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:09:24,141 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 429 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:24,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 657 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:09:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-06 19:09:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 173. [2021-12-06 19:09:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 149 states have (on average 1.4697986577181208) internal successors, (219), 150 states have internal predecessors, (219), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 19:09:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 253 transitions. [2021-12-06 19:09:24,161 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 253 transitions. Word has length 91 [2021-12-06 19:09:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:24,161 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 253 transitions. [2021-12-06 19:09:24,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 253 transitions. [2021-12-06 19:09:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:24,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:24,163 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:24,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:09:24,163 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1533294706, now seen corresponding path program 1 times [2021-12-06 19:09:24,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:24,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116908886] [2021-12-06 19:09:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:24,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:24,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:24,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116908886] [2021-12-06 19:09:24,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116908886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:24,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:24,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:09:24,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593309185] [2021-12-06 19:09:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:24,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:09:24,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:24,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:09:24,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:09:24,251 INFO L87 Difference]: Start difference. First operand 173 states and 253 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:24,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:24,954 INFO L93 Difference]: Finished difference Result 603 states and 900 transitions. [2021-12-06 19:09:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:09:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:24,958 INFO L225 Difference]: With dead ends: 603 [2021-12-06 19:09:24,958 INFO L226 Difference]: Without dead ends: 442 [2021-12-06 19:09:24,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:09:24,960 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 797 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:24,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 1023 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:09:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-06 19:09:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 336. [2021-12-06 19:09:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 292 states have (on average 1.476027397260274) internal successors, (431), 294 states have internal predecessors, (431), 30 states have call successors, (30), 12 states have call predecessors, (30), 13 states have return successors, (33), 31 states have call predecessors, (33), 30 states have call successors, (33) [2021-12-06 19:09:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 494 transitions. [2021-12-06 19:09:24,986 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 494 transitions. Word has length 91 [2021-12-06 19:09:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:24,986 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 494 transitions. [2021-12-06 19:09:24,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 494 transitions. [2021-12-06 19:09:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:24,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:24,991 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:24,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:09:24,992 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash -646071860, now seen corresponding path program 1 times [2021-12-06 19:09:24,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:24,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743348397] [2021-12-06 19:09:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:24,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:25,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:25,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743348397] [2021-12-06 19:09:25,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743348397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:25,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:25,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:09:25,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407991889] [2021-12-06 19:09:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:25,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:09:25,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:09:25,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:09:25,084 INFO L87 Difference]: Start difference. First operand 336 states and 494 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:25,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:25,781 INFO L93 Difference]: Finished difference Result 1204 states and 1806 transitions. [2021-12-06 19:09:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:09:25,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:25,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:25,788 INFO L225 Difference]: With dead ends: 1204 [2021-12-06 19:09:25,789 INFO L226 Difference]: Without dead ends: 880 [2021-12-06 19:09:25,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:09:25,792 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 749 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:25,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 1367 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:09:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-12-06 19:09:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 673. [2021-12-06 19:09:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 587 states have (on average 1.4821124361158433) internal successors, (870), 593 states have internal predecessors, (870), 56 states have call successors, (56), 24 states have call predecessors, (56), 29 states have return successors, (71), 59 states have call predecessors, (71), 56 states have call successors, (71) [2021-12-06 19:09:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 997 transitions. [2021-12-06 19:09:25,857 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 997 transitions. Word has length 91 [2021-12-06 19:09:25,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:25,858 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 997 transitions. [2021-12-06 19:09:25,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 997 transitions. [2021-12-06 19:09:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:25,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:25,861 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:25,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:09:25,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:25,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1737852878, now seen corresponding path program 1 times [2021-12-06 19:09:25,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:25,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518538745] [2021-12-06 19:09:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:25,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:25,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:25,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518538745] [2021-12-06 19:09:25,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518538745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:25,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:25,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:09:25,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407311616] [2021-12-06 19:09:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:25,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:09:25,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:09:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:09:25,950 INFO L87 Difference]: Start difference. First operand 673 states and 997 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:26,909 INFO L93 Difference]: Finished difference Result 2658 states and 4013 transitions. [2021-12-06 19:09:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:09:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:26,920 INFO L225 Difference]: With dead ends: 2658 [2021-12-06 19:09:26,920 INFO L226 Difference]: Without dead ends: 1997 [2021-12-06 19:09:26,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:09:26,923 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 645 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:26,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 1579 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:09:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2021-12-06 19:09:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1358. [2021-12-06 19:09:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1186 states have (on average 1.4924114671163575) internal successors, (1770), 1206 states have internal predecessors, (1770), 104 states have call successors, (104), 48 states have call predecessors, (104), 67 states have return successors, (167), 111 states have call predecessors, (167), 104 states have call successors, (167) [2021-12-06 19:09:27,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2041 transitions. [2021-12-06 19:09:27,003 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2041 transitions. Word has length 91 [2021-12-06 19:09:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:27,003 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 2041 transitions. [2021-12-06 19:09:27,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2041 transitions. [2021-12-06 19:09:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:27,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:27,005 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:27,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:09:27,005 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:27,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1814753676, now seen corresponding path program 1 times [2021-12-06 19:09:27,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:27,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313247446] [2021-12-06 19:09:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:27,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:27,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:27,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313247446] [2021-12-06 19:09:27,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313247446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:27,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:27,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:09:27,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042223505] [2021-12-06 19:09:27,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:27,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:09:27,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:09:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:09:27,082 INFO L87 Difference]: Start difference. First operand 1358 states and 2041 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:27,910 INFO L93 Difference]: Finished difference Result 5276 states and 8077 transitions. [2021-12-06 19:09:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:09:27,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:27,937 INFO L225 Difference]: With dead ends: 5276 [2021-12-06 19:09:27,937 INFO L226 Difference]: Without dead ends: 3930 [2021-12-06 19:09:27,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:09:27,944 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 705 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:27,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1513 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:09:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-12-06 19:09:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 2783. [2021-12-06 19:09:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2425 states have (on average 1.4985567010309278) internal successors, (3634), 2491 states have internal predecessors, (3634), 196 states have call successors, (196), 96 states have call predecessors, (196), 161 states have return successors, (451), 211 states have call predecessors, (451), 196 states have call successors, (451) [2021-12-06 19:09:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4281 transitions. [2021-12-06 19:09:28,091 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4281 transitions. Word has length 91 [2021-12-06 19:09:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:28,091 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 4281 transitions. [2021-12-06 19:09:28,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4281 transitions. [2021-12-06 19:09:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:28,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:28,095 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:28,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:09:28,095 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 847403022, now seen corresponding path program 1 times [2021-12-06 19:09:28,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:28,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743413847] [2021-12-06 19:09:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:28,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:28,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:28,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743413847] [2021-12-06 19:09:28,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743413847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:28,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:28,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:09:28,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295051478] [2021-12-06 19:09:28,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:28,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:09:28,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:09:28,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:09:28,165 INFO L87 Difference]: Start difference. First operand 2783 states and 4281 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:29,002 INFO L93 Difference]: Finished difference Result 10247 states and 16107 transitions. [2021-12-06 19:09:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:09:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:29,034 INFO L225 Difference]: With dead ends: 10247 [2021-12-06 19:09:29,034 INFO L226 Difference]: Without dead ends: 7476 [2021-12-06 19:09:29,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:09:29,042 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 737 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:29,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 1346 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:09:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2021-12-06 19:09:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 5663. [2021-12-06 19:09:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5663 states, 4887 states have (on average 1.4904849600982197) internal successors, (7284), 5099 states have internal predecessors, (7284), 372 states have call successors, (372), 192 states have call predecessors, (372), 403 states have return successors, (1395), 403 states have call predecessors, (1395), 372 states have call successors, (1395) [2021-12-06 19:09:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 9051 transitions. [2021-12-06 19:09:29,326 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 9051 transitions. Word has length 91 [2021-12-06 19:09:29,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:29,326 INFO L470 AbstractCegarLoop]: Abstraction has 5663 states and 9051 transitions. [2021-12-06 19:09:29,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:09:29,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 9051 transitions. [2021-12-06 19:09:29,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:29,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:29,331 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:29,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:09:29,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 354776848, now seen corresponding path program 1 times [2021-12-06 19:09:29,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:29,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438335234] [2021-12-06 19:09:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:29,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:29,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:29,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438335234] [2021-12-06 19:09:29,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438335234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:29,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:29,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:09:29,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679053268] [2021-12-06 19:09:29,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:29,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:09:29,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:09:29,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:09:29,408 INFO L87 Difference]: Start difference. First operand 5663 states and 9051 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:09:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:30,358 INFO L93 Difference]: Finished difference Result 16506 states and 26327 transitions. [2021-12-06 19:09:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:09:30,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:30,409 INFO L225 Difference]: With dead ends: 16506 [2021-12-06 19:09:30,409 INFO L226 Difference]: Without dead ends: 10856 [2021-12-06 19:09:30,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:09:30,427 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 763 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:30,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1047 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:09:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10856 states. [2021-12-06 19:09:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10856 to 8173. [2021-12-06 19:09:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8173 states, 7044 states have (on average 1.4805508233957978) internal successors, (10429), 7337 states have internal predecessors, (10429), 564 states have call successors, (564), 288 states have call predecessors, (564), 564 states have return successors, (1827), 579 states have call predecessors, (1827), 564 states have call successors, (1827) [2021-12-06 19:09:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8173 states to 8173 states and 12820 transitions. [2021-12-06 19:09:30,844 INFO L78 Accepts]: Start accepts. Automaton has 8173 states and 12820 transitions. Word has length 91 [2021-12-06 19:09:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:30,844 INFO L470 AbstractCegarLoop]: Abstraction has 8173 states and 12820 transitions. [2021-12-06 19:09:30,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:09:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 8173 states and 12820 transitions. [2021-12-06 19:09:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:30,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:30,849 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:30,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:09:30,849 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1059695535, now seen corresponding path program 1 times [2021-12-06 19:09:30,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:30,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590103133] [2021-12-06 19:09:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:30,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:30,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:30,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590103133] [2021-12-06 19:09:30,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590103133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:30,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:30,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:30,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560084185] [2021-12-06 19:09:30,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:30,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:30,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:30,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:30,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:30,921 INFO L87 Difference]: Start difference. First operand 8173 states and 12820 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:31,950 INFO L93 Difference]: Finished difference Result 19683 states and 30957 transitions. [2021-12-06 19:09:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:09:31,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:32,005 INFO L225 Difference]: With dead ends: 19683 [2021-12-06 19:09:32,006 INFO L226 Difference]: Without dead ends: 11523 [2021-12-06 19:09:32,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:09:32,028 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 439 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:32,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 928 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:09:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11523 states. [2021-12-06 19:09:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11523 to 8221. [2021-12-06 19:09:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8221 states, 7092 states have (on average 1.4727862380146644) internal successors, (10445), 7385 states have internal predecessors, (10445), 564 states have call successors, (564), 288 states have call predecessors, (564), 564 states have return successors, (1827), 579 states have call predecessors, (1827), 564 states have call successors, (1827) [2021-12-06 19:09:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8221 states to 8221 states and 12836 transitions. [2021-12-06 19:09:32,433 INFO L78 Accepts]: Start accepts. Automaton has 8221 states and 12836 transitions. Word has length 91 [2021-12-06 19:09:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:32,434 INFO L470 AbstractCegarLoop]: Abstraction has 8221 states and 12836 transitions. [2021-12-06 19:09:32,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8221 states and 12836 transitions. [2021-12-06 19:09:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:32,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:32,438 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:32,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:09:32,439 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1261519469, now seen corresponding path program 1 times [2021-12-06 19:09:32,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:32,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988206943] [2021-12-06 19:09:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:32,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:32,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:32,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:32,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:32,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988206943] [2021-12-06 19:09:32,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988206943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:32,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:32,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:32,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657187910] [2021-12-06 19:09:32,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:32,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:32,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:32,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:32,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:32,513 INFO L87 Difference]: Start difference. First operand 8221 states and 12836 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:33,742 INFO L93 Difference]: Finished difference Result 21571 states and 33648 transitions. [2021-12-06 19:09:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:09:33,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:33,775 INFO L225 Difference]: With dead ends: 21571 [2021-12-06 19:09:33,776 INFO L226 Difference]: Without dead ends: 13363 [2021-12-06 19:09:33,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:09:33,795 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 439 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:33,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 920 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:09:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13363 states. [2021-12-06 19:09:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13363 to 8365. [2021-12-06 19:09:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 7236 states have (on average 1.4633775566611387) internal successors, (10589), 7529 states have internal predecessors, (10589), 564 states have call successors, (564), 288 states have call predecessors, (564), 564 states have return successors, (1827), 579 states have call predecessors, (1827), 564 states have call successors, (1827) [2021-12-06 19:09:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 12980 transitions. [2021-12-06 19:09:34,228 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 12980 transitions. Word has length 91 [2021-12-06 19:09:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:34,228 INFO L470 AbstractCegarLoop]: Abstraction has 8365 states and 12980 transitions. [2021-12-06 19:09:34,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 12980 transitions. [2021-12-06 19:09:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:34,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:34,233 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:34,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:09:34,234 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2137538475, now seen corresponding path program 1 times [2021-12-06 19:09:34,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:34,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635124386] [2021-12-06 19:09:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:34,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:34,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:34,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635124386] [2021-12-06 19:09:34,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635124386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:34,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:34,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:34,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19303253] [2021-12-06 19:09:34,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:34,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:34,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:34,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:34,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:34,315 INFO L87 Difference]: Start difference. First operand 8365 states and 12980 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:36,476 INFO L93 Difference]: Finished difference Result 32172 states and 50426 transitions. [2021-12-06 19:09:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:09:36,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:36,531 INFO L225 Difference]: With dead ends: 32172 [2021-12-06 19:09:36,531 INFO L226 Difference]: Without dead ends: 23820 [2021-12-06 19:09:36,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:09:36,553 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 1516 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:36,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1195 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 19:09:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23820 states. [2021-12-06 19:09:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23820 to 18827. [2021-12-06 19:09:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18827 states, 16293 states have (on average 1.463082305284478) internal successors, (23838), 16959 states have internal predecessors, (23838), 1248 states have call successors, (1248), 668 states have call predecessors, (1248), 1285 states have return successors, (4223), 1231 states have call predecessors, (4223), 1248 states have call successors, (4223) [2021-12-06 19:09:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18827 states to 18827 states and 29309 transitions. [2021-12-06 19:09:37,508 INFO L78 Accepts]: Start accepts. Automaton has 18827 states and 29309 transitions. Word has length 91 [2021-12-06 19:09:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:37,508 INFO L470 AbstractCegarLoop]: Abstraction has 18827 states and 29309 transitions. [2021-12-06 19:09:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 18827 states and 29309 transitions. [2021-12-06 19:09:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:37,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:37,512 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:37,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:09:37,512 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:37,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1435970250, now seen corresponding path program 1 times [2021-12-06 19:09:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:37,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481699945] [2021-12-06 19:09:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:37,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:37,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:37,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481699945] [2021-12-06 19:09:37,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481699945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:37,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:37,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:37,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338348277] [2021-12-06 19:09:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:37,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:37,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:37,580 INFO L87 Difference]: Start difference. First operand 18827 states and 29309 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:39,615 INFO L93 Difference]: Finished difference Result 45809 states and 72189 transitions. [2021-12-06 19:09:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:09:39,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:39,694 INFO L225 Difference]: With dead ends: 45809 [2021-12-06 19:09:39,694 INFO L226 Difference]: Without dead ends: 26995 [2021-12-06 19:09:39,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:09:39,736 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 400 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:39,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 912 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:09:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26995 states. [2021-12-06 19:09:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26995 to 19019. [2021-12-06 19:09:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19019 states, 16485 states have (on average 1.4547770700636942) internal successors, (23982), 17151 states have internal predecessors, (23982), 1248 states have call successors, (1248), 668 states have call predecessors, (1248), 1285 states have return successors, (4223), 1231 states have call predecessors, (4223), 1248 states have call successors, (4223) [2021-12-06 19:09:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19019 states to 19019 states and 29453 transitions. [2021-12-06 19:09:40,866 INFO L78 Accepts]: Start accepts. Automaton has 19019 states and 29453 transitions. Word has length 91 [2021-12-06 19:09:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:40,867 INFO L470 AbstractCegarLoop]: Abstraction has 19019 states and 29453 transitions. [2021-12-06 19:09:40,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 19019 states and 29453 transitions. [2021-12-06 19:09:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:40,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:40,870 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:40,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:09:40,871 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash -919835000, now seen corresponding path program 1 times [2021-12-06 19:09:40,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:40,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347728704] [2021-12-06 19:09:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:40,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:40,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:40,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347728704] [2021-12-06 19:09:40,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347728704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:40,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:40,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:09:40,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489982788] [2021-12-06 19:09:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:40,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:09:40,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:09:40,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:09:40,930 INFO L87 Difference]: Start difference. First operand 19019 states and 29453 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:09:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:43,854 INFO L93 Difference]: Finished difference Result 66314 states and 103132 transitions. [2021-12-06 19:09:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:09:43,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:43,969 INFO L225 Difference]: With dead ends: 66314 [2021-12-06 19:09:43,969 INFO L226 Difference]: Without dead ends: 47308 [2021-12-06 19:09:44,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:09:44,017 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 889 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:44,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 989 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:09:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47308 states. [2021-12-06 19:09:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47308 to 37393. [2021-12-06 19:09:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37393 states, 32394 states have (on average 1.4488794221152066) internal successors, (46935), 33725 states have internal predecessors, (46935), 2432 states have call successors, (2432), 1332 states have call predecessors, (2432), 2566 states have return successors, (8327), 2367 states have call predecessors, (8327), 2432 states have call successors, (8327) [2021-12-06 19:09:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37393 states to 37393 states and 57694 transitions. [2021-12-06 19:09:46,251 INFO L78 Accepts]: Start accepts. Automaton has 37393 states and 57694 transitions. Word has length 91 [2021-12-06 19:09:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:46,251 INFO L470 AbstractCegarLoop]: Abstraction has 37393 states and 57694 transitions. [2021-12-06 19:09:46,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:09:46,252 INFO L276 IsEmpty]: Start isEmpty. Operand 37393 states and 57694 transitions. [2021-12-06 19:09:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:46,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:46,255 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:46,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:09:46,255 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2067127527, now seen corresponding path program 1 times [2021-12-06 19:09:46,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895722929] [2021-12-06 19:09:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:46,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:46,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:46,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:46,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895722929] [2021-12-06 19:09:46,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895722929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:46,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:46,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:46,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854161120] [2021-12-06 19:09:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:46,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:46,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:46,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:46,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:46,318 INFO L87 Difference]: Start difference. First operand 37393 states and 57694 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:49,772 INFO L93 Difference]: Finished difference Result 88157 states and 137531 transitions. [2021-12-06 19:09:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:09:49,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:49,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:49,902 INFO L225 Difference]: With dead ends: 88157 [2021-12-06 19:09:49,902 INFO L226 Difference]: Without dead ends: 50777 [2021-12-06 19:09:49,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:09:49,971 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 357 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:49,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 877 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:09:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50777 states. [2021-12-06 19:09:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50777 to 37729. [2021-12-06 19:09:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37729 states, 32730 states have (on average 1.440849373663306) internal successors, (47159), 34061 states have internal predecessors, (47159), 2432 states have call successors, (2432), 1332 states have call predecessors, (2432), 2566 states have return successors, (8327), 2367 states have call predecessors, (8327), 2432 states have call successors, (8327) [2021-12-06 19:09:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37729 states to 37729 states and 57918 transitions. [2021-12-06 19:09:52,465 INFO L78 Accepts]: Start accepts. Automaton has 37729 states and 57918 transitions. Word has length 91 [2021-12-06 19:09:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:09:52,466 INFO L470 AbstractCegarLoop]: Abstraction has 37729 states and 57918 transitions. [2021-12-06 19:09:52,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 37729 states and 57918 transitions. [2021-12-06 19:09:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:09:52,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:09:52,470 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:09:52,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:09:52,470 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:09:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:09:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1979693275, now seen corresponding path program 1 times [2021-12-06 19:09:52,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:09:52,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435637487] [2021-12-06 19:09:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:09:52,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:09:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:09:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:09:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:09:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:09:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:09:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:09:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:09:52,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:09:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435637487] [2021-12-06 19:09:52,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435637487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:09:52,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:09:52,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:09:52,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284364249] [2021-12-06 19:09:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:09:52,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:09:52,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:09:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:09:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:09:52,532 INFO L87 Difference]: Start difference. First operand 37729 states and 57918 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:09:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:09:57,868 INFO L93 Difference]: Finished difference Result 100124 states and 154057 transitions. [2021-12-06 19:09:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:09:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:09:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:09:58,008 INFO L225 Difference]: With dead ends: 100124 [2021-12-06 19:09:58,008 INFO L226 Difference]: Without dead ends: 62409 [2021-12-06 19:09:58,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:09:58,072 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 668 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:09:58,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 704 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:09:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62409 states. [2021-12-06 19:10:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62409 to 46945. [2021-12-06 19:10:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46945 states, 41722 states have (on average 1.3914721250179762) internal successors, (58055), 43021 states have internal predecessors, (58055), 2432 states have call successors, (2432), 1556 states have call predecessors, (2432), 2790 states have return successors, (8359), 2399 states have call predecessors, (8359), 2432 states have call successors, (8359) [2021-12-06 19:10:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46945 states to 46945 states and 68846 transitions. [2021-12-06 19:10:01,826 INFO L78 Accepts]: Start accepts. Automaton has 46945 states and 68846 transitions. Word has length 91 [2021-12-06 19:10:01,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:10:01,827 INFO L470 AbstractCegarLoop]: Abstraction has 46945 states and 68846 transitions. [2021-12-06 19:10:01,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:10:01,827 INFO L276 IsEmpty]: Start isEmpty. Operand 46945 states and 68846 transitions. [2021-12-06 19:10:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:10:01,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:10:01,830 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:10:01,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:10:01,831 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:10:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:10:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1704933661, now seen corresponding path program 1 times [2021-12-06 19:10:01,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:10:01,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941789460] [2021-12-06 19:10:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:10:01,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:10:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:01,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:10:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:10:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:10:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:10:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:10:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:10:01,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:10:01,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941789460] [2021-12-06 19:10:01,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941789460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:10:01,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:10:01,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:10:01,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698740138] [2021-12-06 19:10:01,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:10:01,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:10:01,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:10:01,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:10:01,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:10:01,897 INFO L87 Difference]: Start difference. First operand 46945 states and 68846 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:10:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:10:07,177 INFO L93 Difference]: Finished difference Result 108188 states and 162497 transitions. [2021-12-06 19:10:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:10:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2021-12-06 19:10:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:10:07,322 INFO L225 Difference]: With dead ends: 108188 [2021-12-06 19:10:07,322 INFO L226 Difference]: Without dead ends: 61257 [2021-12-06 19:10:07,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:10:07,396 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 511 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:10:07,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 605 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:10:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61257 states. [2021-12-06 19:10:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61257 to 46945. [2021-12-06 19:10:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46945 states, 41722 states have (on average 1.3807343847370692) internal successors, (57607), 43021 states have internal predecessors, (57607), 2432 states have call successors, (2432), 1556 states have call predecessors, (2432), 2790 states have return successors, (8359), 2399 states have call predecessors, (8359), 2432 states have call successors, (8359) [2021-12-06 19:10:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46945 states to 46945 states and 68398 transitions. [2021-12-06 19:10:11,214 INFO L78 Accepts]: Start accepts. Automaton has 46945 states and 68398 transitions. Word has length 91 [2021-12-06 19:10:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:10:11,215 INFO L470 AbstractCegarLoop]: Abstraction has 46945 states and 68398 transitions. [2021-12-06 19:10:11,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-12-06 19:10:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 46945 states and 68398 transitions. [2021-12-06 19:10:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:10:11,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:10:11,218 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:10:11,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:10:11,219 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:10:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:10:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1003333787, now seen corresponding path program 1 times [2021-12-06 19:10:11,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:10:11,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896260352] [2021-12-06 19:10:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:10:11,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:10:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:10:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:11,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:10:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:10:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:10:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:10:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:10:11,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:10:11,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896260352] [2021-12-06 19:10:11,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896260352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:10:11,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:10:11,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:10:11,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89889949] [2021-12-06 19:10:11,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:10:11,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:10:11,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:10:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:10:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:10:11,291 INFO L87 Difference]: Start difference. First operand 46945 states and 68398 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:10:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:10:16,765 INFO L93 Difference]: Finished difference Result 86321 states and 123939 transitions. [2021-12-06 19:10:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:10:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:10:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:10:16,992 INFO L225 Difference]: With dead ends: 86321 [2021-12-06 19:10:16,992 INFO L226 Difference]: Without dead ends: 61852 [2021-12-06 19:10:17,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:10:17,025 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 772 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:10:17,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 957 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:10:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61852 states. [2021-12-06 19:10:20,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61852 to 44941. [2021-12-06 19:10:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44941 states, 40204 states have (on average 1.3652621629688588) internal successors, (54889), 41017 states have internal predecessors, (54889), 2432 states have call successors, (2432), 1556 states have call predecessors, (2432), 2304 states have return successors, (5527), 2383 states have call predecessors, (5527), 2432 states have call successors, (5527) [2021-12-06 19:10:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44941 states to 44941 states and 62848 transitions. [2021-12-06 19:10:20,679 INFO L78 Accepts]: Start accepts. Automaton has 44941 states and 62848 transitions. Word has length 91 [2021-12-06 19:10:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:10:20,680 INFO L470 AbstractCegarLoop]: Abstraction has 44941 states and 62848 transitions. [2021-12-06 19:10:20,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:10:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 44941 states and 62848 transitions. [2021-12-06 19:10:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:10:20,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:10:20,682 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:10:20,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:10:20,682 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:10:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:10:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1512806877, now seen corresponding path program 1 times [2021-12-06 19:10:20,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:10:20,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880398170] [2021-12-06 19:10:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:10:20,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:10:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:10:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:10:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:10:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:10:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:10:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:10:20,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:10:20,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880398170] [2021-12-06 19:10:20,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880398170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:10:20,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:10:20,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:10:20,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006105891] [2021-12-06 19:10:20,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:10:20,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:10:20,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:10:20,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:10:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:10:20,747 INFO L87 Difference]: Start difference. First operand 44941 states and 62848 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:10:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:10:27,242 INFO L93 Difference]: Finished difference Result 99559 states and 138021 transitions. [2021-12-06 19:10:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:10:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:10:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:10:27,382 INFO L225 Difference]: With dead ends: 99559 [2021-12-06 19:10:27,382 INFO L226 Difference]: Without dead ends: 66916 [2021-12-06 19:10:27,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:10:27,432 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 769 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:10:27,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 910 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:10:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66916 states. [2021-12-06 19:10:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66916 to 44125. [2021-12-06 19:10:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44125 states, 39604 states have (on average 1.3586758913241086) internal successors, (53809), 40201 states have internal predecessors, (53809), 2432 states have call successors, (2432), 1556 states have call predecessors, (2432), 2088 states have return successors, (4495), 2375 states have call predecessors, (4495), 2432 states have call successors, (4495) [2021-12-06 19:10:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44125 states to 44125 states and 60736 transitions. [2021-12-06 19:10:31,168 INFO L78 Accepts]: Start accepts. Automaton has 44125 states and 60736 transitions. Word has length 91 [2021-12-06 19:10:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:10:31,168 INFO L470 AbstractCegarLoop]: Abstraction has 44125 states and 60736 transitions. [2021-12-06 19:10:31,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:10:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 44125 states and 60736 transitions. [2021-12-06 19:10:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:10:31,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:10:31,169 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:10:31,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:10:31,170 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:10:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:10:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 410421157, now seen corresponding path program 1 times [2021-12-06 19:10:31,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:10:31,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821455052] [2021-12-06 19:10:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:10:31,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:10:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:10:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:10:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:10:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:10:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:10:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:10:31,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:10:31,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821455052] [2021-12-06 19:10:31,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821455052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:10:31,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:10:31,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:10:31,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964037952] [2021-12-06 19:10:31,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:10:31,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:10:31,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:10:31,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:10:31,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:10:31,236 INFO L87 Difference]: Start difference. First operand 44125 states and 60736 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:10:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:10:37,970 INFO L93 Difference]: Finished difference Result 87591 states and 119671 transitions. [2021-12-06 19:10:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:10:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:10:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:10:38,100 INFO L225 Difference]: With dead ends: 87591 [2021-12-06 19:10:38,100 INFO L226 Difference]: Without dead ends: 64928 [2021-12-06 19:10:38,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:10:38,141 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1044 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:10:38,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 845 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:10:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64928 states. [2021-12-06 19:10:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64928 to 43285. [2021-12-06 19:10:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43285 states, 39016 states have (on average 1.3511636251794135) internal successors, (52717), 39361 states have internal predecessors, (52717), 2432 states have call successors, (2432), 1556 states have call predecessors, (2432), 1836 states have return successors, (3595), 2371 states have call predecessors, (3595), 2432 states have call successors, (3595) [2021-12-06 19:10:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43285 states to 43285 states and 58744 transitions. [2021-12-06 19:10:41,861 INFO L78 Accepts]: Start accepts. Automaton has 43285 states and 58744 transitions. Word has length 91 [2021-12-06 19:10:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:10:41,861 INFO L470 AbstractCegarLoop]: Abstraction has 43285 states and 58744 transitions. [2021-12-06 19:10:41,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:10:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 43285 states and 58744 transitions. [2021-12-06 19:10:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:10:41,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:10:41,862 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:10:41,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:10:41,862 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:10:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:10:41,863 INFO L85 PathProgramCache]: Analyzing trace with hash 472460771, now seen corresponding path program 1 times [2021-12-06 19:10:41,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:10:41,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192844696] [2021-12-06 19:10:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:10:41,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:10:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:41,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:10:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:10:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:10:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:10:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:10:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:10:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:10:41,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:10:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192844696] [2021-12-06 19:10:41,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192844696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:10:41,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:10:41,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:10:41,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687946580] [2021-12-06 19:10:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:10:41,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:10:41,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:10:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:10:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:10:41,935 INFO L87 Difference]: Start difference. First operand 43285 states and 58744 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:10:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:10:54,054 INFO L93 Difference]: Finished difference Result 166829 states and 226958 transitions. [2021-12-06 19:10:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:10:54,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:10:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:10:54,314 INFO L225 Difference]: With dead ends: 166829 [2021-12-06 19:10:54,314 INFO L226 Difference]: Without dead ends: 123558 [2021-12-06 19:10:54,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:10:54,379 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 795 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:10:54,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 937 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:10:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123558 states. [2021-12-06 19:11:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123558 to 86771. [2021-12-06 19:11:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86771 states, 78188 states have (on average 1.3475341484626797) internal successors, (105361), 79101 states have internal predecessors, (105361), 4710 states have call successors, (4710), 3088 states have call predecessors, (4710), 3872 states have return successors, (7397), 4589 states have call predecessors, (7397), 4710 states have call successors, (7397) [2021-12-06 19:11:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86771 states to 86771 states and 117468 transitions. [2021-12-06 19:11:02,049 INFO L78 Accepts]: Start accepts. Automaton has 86771 states and 117468 transitions. Word has length 91 [2021-12-06 19:11:02,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:11:02,049 INFO L470 AbstractCegarLoop]: Abstraction has 86771 states and 117468 transitions. [2021-12-06 19:11:02,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:11:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 86771 states and 117468 transitions. [2021-12-06 19:11:02,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:11:02,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:11:02,051 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:11:02,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:11:02,051 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:11:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:11:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 613009381, now seen corresponding path program 1 times [2021-12-06 19:11:02,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:11:02,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035530892] [2021-12-06 19:11:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:11:02,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:11:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:11:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:11:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:11:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:11:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:11:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:11:02,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:11:02,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035530892] [2021-12-06 19:11:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035530892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:11:02,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:11:02,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:11:02,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255785936] [2021-12-06 19:11:02,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:11:02,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:11:02,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:11:02,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:11:02,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:11:02,118 INFO L87 Difference]: Start difference. First operand 86771 states and 117468 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:11:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:11:14,568 INFO L93 Difference]: Finished difference Result 166729 states and 224999 transitions. [2021-12-06 19:11:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:11:14,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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 91 [2021-12-06 19:11:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:11:14,835 INFO L225 Difference]: With dead ends: 166729 [2021-12-06 19:11:14,835 INFO L226 Difference]: Without dead ends: 122822 [2021-12-06 19:11:14,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:11:14,900 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 760 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:11:14,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 907 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:11:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122822 states. [2021-12-06 19:11:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122822 to 86099. [2021-12-06 19:11:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86099 states, 77852 states have (on average 1.344718183219442) internal successors, (104689), 78429 states have internal predecessors, (104689), 4710 states have call successors, (4710), 3088 states have call predecessors, (4710), 3536 states have return successors, (6497), 4585 states have call predecessors, (6497), 4710 states have call successors, (6497) [2021-12-06 19:11:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86099 states to 86099 states and 115896 transitions. [2021-12-06 19:11:22,510 INFO L78 Accepts]: Start accepts. Automaton has 86099 states and 115896 transitions. Word has length 91 [2021-12-06 19:11:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:11:22,510 INFO L470 AbstractCegarLoop]: Abstraction has 86099 states and 115896 transitions. [2021-12-06 19:11:22,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-12-06 19:11:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 86099 states and 115896 transitions. [2021-12-06 19:11:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 19:11:22,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:11:22,511 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:11:22,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 19:11:22,511 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:11:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:11:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash 478995875, now seen corresponding path program 1 times [2021-12-06 19:11:22,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:11:22,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669368298] [2021-12-06 19:11:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:11:22,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:11:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:11:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:11:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:11:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:11:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:11:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:11:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:11:22,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:11:22,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669368298] [2021-12-06 19:11:22,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669368298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:11:22,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:11:22,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:11:22,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008234768] [2021-12-06 19:11:22,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:11:22,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:11:22,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:11:22,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:11:22,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:11:22,557 INFO L87 Difference]: Start difference. First operand 86099 states and 115896 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:11:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:11:45,466 INFO L93 Difference]: Finished difference Result 313579 states and 421880 transitions. [2021-12-06 19:11:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:11:45,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2021-12-06 19:11:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:11:46,098 INFO L225 Difference]: With dead ends: 313579 [2021-12-06 19:11:46,098 INFO L226 Difference]: Without dead ends: 227496 [2021-12-06 19:11:46,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:11:46,215 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 735 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:11:46,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 623 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:11:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227496 states. [2021-12-06 19:12:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227496 to 170589. [2021-12-06 19:12:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170589 states, 154421 states have (on average 1.331204952694258) internal successors, (205566), 155447 states have internal predecessors, (205566), 9091 states have call successors, (9091), 6104 states have call predecessors, (9091), 7076 states have return successors, (13985), 9045 states have call predecessors, (13985), 9091 states have call successors, (13985) [2021-12-06 19:12:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170589 states to 170589 states and 228642 transitions. [2021-12-06 19:12:02,021 INFO L78 Accepts]: Start accepts. Automaton has 170589 states and 228642 transitions. Word has length 91 [2021-12-06 19:12:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:02,021 INFO L470 AbstractCegarLoop]: Abstraction has 170589 states and 228642 transitions. [2021-12-06 19:12:02,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-12-06 19:12:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 170589 states and 228642 transitions. [2021-12-06 19:12:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 19:12:02,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:02,023 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:02,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:12:02,024 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:12:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1553187549, now seen corresponding path program 1 times [2021-12-06 19:12:02,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:02,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507751162] [2021-12-06 19:12:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:02,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:12:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:12:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:12:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:12:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:12:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:02,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:02,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507751162] [2021-12-06 19:12:02,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507751162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:02,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:02,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:12:02,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075275054] [2021-12-06 19:12:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:02,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:12:02,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:12:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:12:02,067 INFO L87 Difference]: Start difference. First operand 170589 states and 228642 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-12-06 19:12:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:47,602 INFO L93 Difference]: Finished difference Result 621749 states and 833778 transitions. [2021-12-06 19:12:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:12:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 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 92 [2021-12-06 19:12:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:48,869 INFO L225 Difference]: With dead ends: 621749 [2021-12-06 19:12:48,869 INFO L226 Difference]: Without dead ends: 451186 [2021-12-06 19:12:49,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:12:49,151 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 804 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:49,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 750 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:12:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451186 states. [2021-12-06 19:13:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451186 to 380831. [2021-12-06 19:13:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380831 states, 346829 states have (on average 1.31365024262677) internal successors, (455612), 350737 states have internal predecessors, (455612), 17565 states have call successors, (17565), 12040 states have call predecessors, (17565), 16436 states have return successors, (33701), 18069 states have call predecessors, (33701), 17565 states have call successors, (33701) [2021-12-06 19:13:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380831 states to 380831 states and 506878 transitions. [2021-12-06 19:13:30,838 INFO L78 Accepts]: Start accepts. Automaton has 380831 states and 506878 transitions. Word has length 92 [2021-12-06 19:13:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:13:30,838 INFO L470 AbstractCegarLoop]: Abstraction has 380831 states and 506878 transitions. [2021-12-06 19:13:30,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-12-06 19:13:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 380831 states and 506878 transitions. [2021-12-06 19:13:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 19:13:30,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:13:30,842 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:13:30,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:13:30,842 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:13:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:13:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 862648801, now seen corresponding path program 1 times [2021-12-06 19:13:30,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:13:30,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117041009] [2021-12-06 19:13:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:13:30,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:13:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:13:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:13:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:13:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:13:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:13:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:13:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:13:30,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:13:30,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117041009] [2021-12-06 19:13:30,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117041009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:13:30,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:13:30,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:13:30,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603116763] [2021-12-06 19:13:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:13:30,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:13:30,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:13:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:13:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:13:30,876 INFO L87 Difference]: Start difference. First operand 380831 states and 506878 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:14:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:14:23,943 INFO L93 Difference]: Finished difference Result 853358 states and 1136074 transitions. [2021-12-06 19:14:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:14:23,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2021-12-06 19:14:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:14:25,250 INFO L225 Difference]: With dead ends: 853358 [2021-12-06 19:14:25,250 INFO L226 Difference]: Without dead ends: 472549 [2021-12-06 19:14:25,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:14:25,775 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 509 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:14:25,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 384 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:14:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472549 states. [2021-12-06 19:15:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472549 to 380813. [2021-12-06 19:15:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380813 states, 346821 states have (on average 1.3136344108344074) internal successors, (455596), 350727 states have internal predecessors, (455596), 17555 states have call successors, (17555), 12040 states have call predecessors, (17555), 16436 states have return successors, (33681), 18053 states have call predecessors, (33681), 17555 states have call successors, (33681) [2021-12-06 19:15:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380813 states to 380813 states and 506832 transitions. [2021-12-06 19:15:08,476 INFO L78 Accepts]: Start accepts. Automaton has 380813 states and 506832 transitions. Word has length 92 [2021-12-06 19:15:08,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:15:08,476 INFO L470 AbstractCegarLoop]: Abstraction has 380813 states and 506832 transitions. [2021-12-06 19:15:08,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:15:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 380813 states and 506832 transitions. [2021-12-06 19:15:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 19:15:08,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:15:08,478 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:15:08,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 19:15:08,479 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:15:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:15:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1824768788, now seen corresponding path program 1 times [2021-12-06 19:15:08,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:15:08,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817923753] [2021-12-06 19:15:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:15:08,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:15:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:15:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:15:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:15:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:15:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:15:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:15:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:15:08,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:15:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817923753] [2021-12-06 19:15:08,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817923753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:15:08,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:15:08,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:15:08,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269733788] [2021-12-06 19:15:08,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:15:08,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:15:08,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:15:08,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:15:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:15:08,524 INFO L87 Difference]: Start difference. First operand 380813 states and 506832 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 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) [2021-12-06 19:16:59,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:16:59,156 INFO L93 Difference]: Finished difference Result 1351411 states and 1800320 transitions. [2021-12-06 19:16:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:16:59,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 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 93 [2021-12-06 19:16:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:17:02,238 INFO L225 Difference]: With dead ends: 1351411 [2021-12-06 19:17:02,238 INFO L226 Difference]: Without dead ends: 970624 [2021-12-06 19:17:02,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:17:02,982 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 875 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:17:02,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 626 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:17:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970624 states. [2021-12-06 19:18:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970624 to 807453. [2021-12-06 19:18:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807453 states, 736467 states have (on average 1.3051691386036306) internal successors, (961214), 747543 states have internal predecessors, (961214), 34381 states have call successors, (34381), 23864 states have call predecessors, (34381), 36604 states have return successors, (76409), 36061 states have call predecessors, (76409), 34381 states have call successors, (76409) [2021-12-06 19:18:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807453 states to 807453 states and 1072004 transitions. [2021-12-06 19:18:39,974 INFO L78 Accepts]: Start accepts. Automaton has 807453 states and 1072004 transitions. Word has length 93 [2021-12-06 19:18:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:18:39,975 INFO L470 AbstractCegarLoop]: Abstraction has 807453 states and 1072004 transitions. [2021-12-06 19:18:39,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 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) [2021-12-06 19:18:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 807453 states and 1072004 transitions. [2021-12-06 19:18:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 19:18:39,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:18:39,979 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:18:39,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 19:18:39,979 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:18:39,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:18:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 591067562, now seen corresponding path program 1 times [2021-12-06 19:18:39,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:18:39,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532885340] [2021-12-06 19:18:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:18:39,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:18:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:18:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 19:18:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:18:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:18:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:18:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:18:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:18:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:18:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:18:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:18:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:18:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:18:40,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:18:40,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532885340] [2021-12-06 19:18:40,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532885340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:18:40,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:18:40,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:18:40,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822248588] [2021-12-06 19:18:40,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:18:40,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:18:40,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:18:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:18:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:18:40,017 INFO L87 Difference]: Start difference. First operand 807453 states and 1072004 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:20:25,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:20:25,149 INFO L93 Difference]: Finished difference Result 1666208 states and 2217764 transitions. [2021-12-06 19:20:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:20:25,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 93 [2021-12-06 19:20:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:20:27,818 INFO L225 Difference]: With dead ends: 1666208 [2021-12-06 19:20:27,818 INFO L226 Difference]: Without dead ends: 858781 [2021-12-06 19:20:29,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:20:29,311 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 507 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:20:29,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 382 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:20:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858781 states.