./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/transmitter.03.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4edad7c083448b81b05575191757512095bfff0f094103ddb1a592d0cd702494 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:24:28,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:24:28,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:24:28,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:24:28,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:24:28,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:24:28,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:24:28,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:24:28,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:24:28,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:24:28,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:24:28,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:24:28,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:24:28,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:24:28,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:24:28,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:24:28,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:24:28,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:24:28,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:24:28,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:24:28,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:24:28,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:24:28,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:24:28,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:24:28,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:24:28,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:24:28,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:24:28,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:24:28,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:24:28,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:24:28,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:24:28,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:24:28,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:24:28,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:24:28,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:24:28,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:24:28,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:24:28,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:24:28,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:24:28,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:24:28,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:24:28,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:24:28,465 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:24:28,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:24:28,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:24:28,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:24:28,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:24:28,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:24:28,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:24:28,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:24:28,469 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:24:28,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:24:28,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:24:28,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:24:28,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:24:28,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:24:28,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:24:28,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:24:28,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:24:28,471 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:24:28,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:24:28,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:24:28,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:24:28,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:24:28,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:24:28,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:24:28,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:24:28,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:24:28,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:24:28,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:24:28,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:24:28,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:24:28,474 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:24:28,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:24:28,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:24:28,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:24:28,474 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4edad7c083448b81b05575191757512095bfff0f094103ddb1a592d0cd702494 [2021-12-21 13:24:28,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:24:28,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:24:28,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:24:28,704 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:24:28,705 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:24:28,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.03.cil.c [2021-12-21 13:24:28,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743f97981/ba026c7543b342b18f12d73ae9599524/FLAG04dbe6e14 [2021-12-21 13:24:29,124 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:24:29,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.03.cil.c [2021-12-21 13:24:29,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743f97981/ba026c7543b342b18f12d73ae9599524/FLAG04dbe6e14 [2021-12-21 13:24:29,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743f97981/ba026c7543b342b18f12d73ae9599524 [2021-12-21 13:24:29,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:24:29,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:24:29,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:24:29,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:24:29,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:24:29,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a03d9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29, skipping insertion in model container [2021-12-21 13:24:29,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:24:29,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:24:29,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.03.cil.c[706,719] [2021-12-21 13:24:29,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:24:29,375 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:24:29,391 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.03.cil.c[706,719] [2021-12-21 13:24:29,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:24:29,427 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:24:29,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29 WrapperNode [2021-12-21 13:24:29,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:24:29,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:24:29,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:24:29,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:24:29,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,468 INFO L137 Inliner]: procedures = 34, calls = 39, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 321 [2021-12-21 13:24:29,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:24:29,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:24:29,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:24:29,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:24:29,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:24:29,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:24:29,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:24:29,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:24:29,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (1/1) ... [2021-12-21 13:24:29,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:24:29,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:24:29,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:24:29,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:24:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:24:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 13:24:29,573 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 13:24:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 13:24:29,574 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 13:24:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 13:24:29,574 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 13:24:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 13:24:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 13:24:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 13:24:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 13:24:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:24:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 13:24:29,576 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 13:24:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:24:29,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:24:29,655 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:24:29,656 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:24:29,966 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:24:29,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:24:29,974 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-21 13:24:29,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:24:29 BoogieIcfgContainer [2021-12-21 13:24:29,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:24:29,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:24:29,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:24:29,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:24:29,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:24:29" (1/3) ... [2021-12-21 13:24:29,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290a26e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:24:29, skipping insertion in model container [2021-12-21 13:24:29,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:24:29" (2/3) ... [2021-12-21 13:24:29,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290a26e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:24:29, skipping insertion in model container [2021-12-21 13:24:29,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:24:29" (3/3) ... [2021-12-21 13:24:29,991 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.03.cil.c [2021-12-21 13:24:29,995 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:24:29,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:24:30,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:24:30,056 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 [2021-12-21 13:24:30,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:24:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-21 13:24:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:30,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:30,081 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] [2021-12-21 13:24:30,081 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash 377890557, now seen corresponding path program 1 times [2021-12-21 13:24:30,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:30,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945139143] [2021-12-21 13:24:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:30,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:30,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:30,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:30,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945139143] [2021-12-21 13:24:30,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945139143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:30,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:30,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:24:30,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952807295] [2021-12-21 13:24:30,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:30,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:24:30,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:30,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:24:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:24:30,500 INFO L87 Difference]: Start difference. First operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:31,383 INFO L93 Difference]: Finished difference Result 516 states and 818 transitions. [2021-12-21 13:24:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:24:31,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:31,410 INFO L225 Difference]: With dead ends: 516 [2021-12-21 13:24:31,410 INFO L226 Difference]: Without dead ends: 366 [2021-12-21 13:24:31,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:24:31,423 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 500 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:31,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 683 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:24:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-12-21 13:24:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 284. [2021-12-21 13:24:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 243 states have (on average 1.48559670781893) internal successors, (361), 245 states have internal predecessors, (361), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2021-12-21 13:24:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 418 transitions. [2021-12-21 13:24:31,494 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 418 transitions. Word has length 79 [2021-12-21 13:24:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:31,495 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 418 transitions. [2021-12-21 13:24:31,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 418 transitions. [2021-12-21 13:24:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:31,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:31,498 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] [2021-12-21 13:24:31,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:24:31,499 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash -76002114, now seen corresponding path program 1 times [2021-12-21 13:24:31,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:31,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890873101] [2021-12-21 13:24:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:31,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:31,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:31,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890873101] [2021-12-21 13:24:31,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890873101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:31,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:31,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:31,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552261686] [2021-12-21 13:24:31,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:31,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:31,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:31,609 INFO L87 Difference]: Start difference. First operand 284 states and 418 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:32,686 INFO L93 Difference]: Finished difference Result 871 states and 1299 transitions. [2021-12-21 13:24:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:24:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:32,691 INFO L225 Difference]: With dead ends: 871 [2021-12-21 13:24:32,691 INFO L226 Difference]: Without dead ends: 598 [2021-12-21 13:24:32,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:24:32,694 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 525 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:32,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1160 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:24:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-21 13:24:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 413. [2021-12-21 13:24:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 354 states have (on average 1.4774011299435028) internal successors, (523), 357 states have internal predecessors, (523), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2021-12-21 13:24:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 604 transitions. [2021-12-21 13:24:32,738 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 604 transitions. Word has length 79 [2021-12-21 13:24:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:32,739 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 604 transitions. [2021-12-21 13:24:32,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 604 transitions. [2021-12-21 13:24:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:32,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:32,744 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] [2021-12-21 13:24:32,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:24:32,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:32,745 INFO L85 PathProgramCache]: Analyzing trace with hash -130395012, now seen corresponding path program 1 times [2021-12-21 13:24:32,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:32,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880983051] [2021-12-21 13:24:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:32,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:32,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:32,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880983051] [2021-12-21 13:24:32,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880983051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:32,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:32,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:32,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277362168] [2021-12-21 13:24:32,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:32,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:32,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:32,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:32,870 INFO L87 Difference]: Start difference. First operand 413 states and 604 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:33,886 INFO L93 Difference]: Finished difference Result 1334 states and 1979 transitions. [2021-12-21 13:24:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:24:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:33,893 INFO L225 Difference]: With dead ends: 1334 [2021-12-21 13:24:33,893 INFO L226 Difference]: Without dead ends: 932 [2021-12-21 13:24:33,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:24:33,898 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 521 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:33,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1149 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:24:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-12-21 13:24:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 674. [2021-12-21 13:24:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 579 states have (on average 1.471502590673575) internal successors, (852), 584 states have internal predecessors, (852), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2021-12-21 13:24:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 985 transitions. [2021-12-21 13:24:33,983 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 985 transitions. Word has length 79 [2021-12-21 13:24:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:33,984 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 985 transitions. [2021-12-21 13:24:33,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 985 transitions. [2021-12-21 13:24:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:33,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:33,988 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] [2021-12-21 13:24:33,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:24:33,989 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:33,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash -547791618, now seen corresponding path program 1 times [2021-12-21 13:24:33,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:33,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16735759] [2021-12-21 13:24:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:33,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:34,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:34,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16735759] [2021-12-21 13:24:34,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16735759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:34,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:34,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:34,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038720020] [2021-12-21 13:24:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:34,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:34,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:34,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:34,121 INFO L87 Difference]: Start difference. First operand 674 states and 985 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:35,206 INFO L93 Difference]: Finished difference Result 2399 states and 3538 transitions. [2021-12-21 13:24:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 13:24:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:35,216 INFO L225 Difference]: With dead ends: 2399 [2021-12-21 13:24:35,217 INFO L226 Difference]: Without dead ends: 1736 [2021-12-21 13:24:35,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-21 13:24:35,220 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 543 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:35,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 1134 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:24:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-12-21 13:24:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1183. [2021-12-21 13:24:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1020 states have (on average 1.4725490196078432) internal successors, (1502), 1029 states have internal predecessors, (1502), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2021-12-21 13:24:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1737 transitions. [2021-12-21 13:24:35,294 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1737 transitions. Word has length 79 [2021-12-21 13:24:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:35,294 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1737 transitions. [2021-12-21 13:24:35,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1737 transitions. [2021-12-21 13:24:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:35,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:35,297 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] [2021-12-21 13:24:35,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:24:35,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash 131480636, now seen corresponding path program 1 times [2021-12-21 13:24:35,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:35,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764253923] [2021-12-21 13:24:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:35,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:35,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764253923] [2021-12-21 13:24:35,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764253923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:35,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:35,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:35,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634117655] [2021-12-21 13:24:35,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:35,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:35,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:35,420 INFO L87 Difference]: Start difference. First operand 1183 states and 1737 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:36,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:36,456 INFO L93 Difference]: Finished difference Result 4210 states and 6212 transitions. [2021-12-21 13:24:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 13:24:36,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:36,472 INFO L225 Difference]: With dead ends: 4210 [2021-12-21 13:24:36,472 INFO L226 Difference]: Without dead ends: 3038 [2021-12-21 13:24:36,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-21 13:24:36,483 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 576 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:36,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1101 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:24:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-12-21 13:24:36,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2200. [2021-12-21 13:24:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4740157480314962) internal successors, (2808), 1922 states have internal predecessors, (2808), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2021-12-21 13:24:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3257 transitions. [2021-12-21 13:24:36,606 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3257 transitions. Word has length 79 [2021-12-21 13:24:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:36,606 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 3257 transitions. [2021-12-21 13:24:36,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3257 transitions. [2021-12-21 13:24:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:36,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:36,611 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] [2021-12-21 13:24:36,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:24:36,612 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:36,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2093055294, now seen corresponding path program 1 times [2021-12-21 13:24:36,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:36,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500277239] [2021-12-21 13:24:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:36,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:36,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:36,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:36,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500277239] [2021-12-21 13:24:36,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500277239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:36,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:36,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:36,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980855803] [2021-12-21 13:24:36,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:36,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:36,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:36,710 INFO L87 Difference]: Start difference. First operand 2200 states and 3257 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:37,194 INFO L93 Difference]: Finished difference Result 4935 states and 7382 transitions. [2021-12-21 13:24:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:24:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:37,207 INFO L225 Difference]: With dead ends: 4935 [2021-12-21 13:24:37,207 INFO L226 Difference]: Without dead ends: 2746 [2021-12-21 13:24:37,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:24:37,215 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 423 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:37,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 466 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:24:37,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-12-21 13:24:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2200. [2021-12-21 13:24:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4650918635170604) internal successors, (2791), 1922 states have internal predecessors, (2791), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2021-12-21 13:24:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3240 transitions. [2021-12-21 13:24:37,334 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3240 transitions. Word has length 79 [2021-12-21 13:24:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:37,335 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 3240 transitions. [2021-12-21 13:24:37,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3240 transitions. [2021-12-21 13:24:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:37,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:37,339 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] [2021-12-21 13:24:37,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:24:37,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2000088068, now seen corresponding path program 1 times [2021-12-21 13:24:37,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:37,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063734010] [2021-12-21 13:24:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:37,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:37,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:37,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063734010] [2021-12-21 13:24:37,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063734010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:37,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:37,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:37,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429605783] [2021-12-21 13:24:37,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:37,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:37,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:37,477 INFO L87 Difference]: Start difference. First operand 2200 states and 3240 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:38,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:38,163 INFO L93 Difference]: Finished difference Result 4844 states and 7190 transitions. [2021-12-21 13:24:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:24:38,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:38,175 INFO L225 Difference]: With dead ends: 4844 [2021-12-21 13:24:38,175 INFO L226 Difference]: Without dead ends: 2656 [2021-12-21 13:24:38,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:24:38,184 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 350 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:38,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 802 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:24:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-12-21 13:24:38,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2203. [2021-12-21 13:24:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1908 states have (on average 1.4559748427672956) internal successors, (2778), 1925 states have internal predecessors, (2778), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2021-12-21 13:24:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3227 transitions. [2021-12-21 13:24:38,323 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3227 transitions. Word has length 79 [2021-12-21 13:24:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:38,325 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 3227 transitions. [2021-12-21 13:24:38,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3227 transitions. [2021-12-21 13:24:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:38,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:38,330 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] [2021-12-21 13:24:38,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:24:38,330 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:38,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash 266293118, now seen corresponding path program 1 times [2021-12-21 13:24:38,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:38,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606089899] [2021-12-21 13:24:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:38,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:38,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:38,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606089899] [2021-12-21 13:24:38,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606089899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:38,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:38,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:38,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119184389] [2021-12-21 13:24:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:38,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:38,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:38,430 INFO L87 Difference]: Start difference. First operand 2203 states and 3227 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:39,206 INFO L93 Difference]: Finished difference Result 5438 states and 8009 transitions. [2021-12-21 13:24:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 13:24:39,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:39,249 INFO L225 Difference]: With dead ends: 5438 [2021-12-21 13:24:39,249 INFO L226 Difference]: Without dead ends: 3247 [2021-12-21 13:24:39,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:24:39,257 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 350 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:39,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 780 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:24:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2021-12-21 13:24:39,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 2254. [2021-12-21 13:24:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1959 states have (on average 1.444104134762634) internal successors, (2829), 1976 states have internal predecessors, (2829), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2021-12-21 13:24:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3278 transitions. [2021-12-21 13:24:39,417 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3278 transitions. Word has length 79 [2021-12-21 13:24:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:39,418 INFO L470 AbstractCegarLoop]: Abstraction has 2254 states and 3278 transitions. [2021-12-21 13:24:39,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3278 transitions. [2021-12-21 13:24:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:39,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:39,422 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] [2021-12-21 13:24:39,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:24:39,423 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1159779456, now seen corresponding path program 1 times [2021-12-21 13:24:39,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:39,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817560451] [2021-12-21 13:24:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:39,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:39,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:39,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817560451] [2021-12-21 13:24:39,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817560451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:39,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:39,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:39,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739947563] [2021-12-21 13:24:39,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:39,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:39,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:39,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:39,538 INFO L87 Difference]: Start difference. First operand 2254 states and 3278 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:41,172 INFO L93 Difference]: Finished difference Result 10055 states and 14924 transitions. [2021-12-21 13:24:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 13:24:41,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:41,214 INFO L225 Difference]: With dead ends: 10055 [2021-12-21 13:24:41,215 INFO L226 Difference]: Without dead ends: 7813 [2021-12-21 13:24:41,228 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 [2021-12-21 13:24:41,230 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1389 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:41,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 980 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:24:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2021-12-21 13:24:41,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 6425. [2021-12-21 13:24:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 5567 states have (on average 1.445841566373271) internal successors, (8049), 5634 states have internal predecessors, (8049), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2021-12-21 13:24:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 9385 transitions. [2021-12-21 13:24:41,712 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 9385 transitions. Word has length 79 [2021-12-21 13:24:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:41,713 INFO L470 AbstractCegarLoop]: Abstraction has 6425 states and 9385 transitions. [2021-12-21 13:24:41,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 9385 transitions. [2021-12-21 13:24:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:41,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:41,717 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] [2021-12-21 13:24:41,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:24:41,718 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1236657535, now seen corresponding path program 1 times [2021-12-21 13:24:41,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:41,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118601693] [2021-12-21 13:24:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:41,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:41,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:41,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:41,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118601693] [2021-12-21 13:24:41,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118601693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:41,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:41,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:41,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156760071] [2021-12-21 13:24:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:41,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:41,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:41,821 INFO L87 Difference]: Start difference. First operand 6425 states and 9385 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:42,996 INFO L93 Difference]: Finished difference Result 14892 states and 22145 transitions. [2021-12-21 13:24:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 13:24:42,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:42,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:43,052 INFO L225 Difference]: With dead ends: 14892 [2021-12-21 13:24:43,053 INFO L226 Difference]: Without dead ends: 8479 [2021-12-21 13:24:43,076 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 [2021-12-21 13:24:43,077 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 311 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:43,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 772 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:24:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8479 states. [2021-12-21 13:24:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8479 to 6503. [2021-12-21 13:24:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 5645 states have (on average 1.4350752878653676) internal successors, (8101), 5712 states have internal predecessors, (8101), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2021-12-21 13:24:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 9437 transitions. [2021-12-21 13:24:43,598 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 9437 transitions. Word has length 79 [2021-12-21 13:24:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:43,598 INFO L470 AbstractCegarLoop]: Abstraction has 6503 states and 9437 transitions. [2021-12-21 13:24:43,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 9437 transitions. [2021-12-21 13:24:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-21 13:24:43,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:43,602 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] [2021-12-21 13:24:43,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:24:43,602 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:43,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1212942595, now seen corresponding path program 1 times [2021-12-21 13:24:43,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:43,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592189683] [2021-12-21 13:24:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:43,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:43,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:24:43,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:43,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592189683] [2021-12-21 13:24:43,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592189683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:43,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:43,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:43,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22220352] [2021-12-21 13:24:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:43,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:43,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:43,700 INFO L87 Difference]: Start difference. First operand 6503 states and 9437 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:45,848 INFO L93 Difference]: Finished difference Result 21917 states and 32003 transitions. [2021-12-21 13:24:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 13:24:45,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2021-12-21 13:24:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:45,916 INFO L225 Difference]: With dead ends: 21917 [2021-12-21 13:24:45,917 INFO L226 Difference]: Without dead ends: 15426 [2021-12-21 13:24:45,943 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 [2021-12-21 13:24:45,944 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 1285 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:45,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 962 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:24:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15426 states. [2021-12-21 13:24:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15426 to 12725. [2021-12-21 13:24:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 11005 states have (on average 1.4299863698318946) internal successors, (15737), 11156 states have internal predecessors, (15737), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2021-12-21 13:24:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 18512 transitions. [2021-12-21 13:24:46,853 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 18512 transitions. Word has length 79 [2021-12-21 13:24:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:46,853 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 18512 transitions. [2021-12-21 13:24:46,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 18512 transitions. [2021-12-21 13:24:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:24:46,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:46,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:24:46,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:24:46,865 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:46,866 INFO L85 PathProgramCache]: Analyzing trace with hash -823536340, now seen corresponding path program 1 times [2021-12-21 13:24:46,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:46,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997129938] [2021-12-21 13:24:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:46,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:46,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:46,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:24:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 13:24:46,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:46,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997129938] [2021-12-21 13:24:46,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997129938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:46,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:46,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:24:46,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435943067] [2021-12-21 13:24:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:46,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:24:46,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:24:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:24:46,949 INFO L87 Difference]: Start difference. First operand 12725 states and 18512 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:48,570 INFO L93 Difference]: Finished difference Result 28548 states and 42518 transitions. [2021-12-21 13:24:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 13:24:48,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2021-12-21 13:24:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:48,633 INFO L225 Difference]: With dead ends: 28548 [2021-12-21 13:24:48,634 INFO L226 Difference]: Without dead ends: 15835 [2021-12-21 13:24:48,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:24:48,669 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 218 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:48,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 745 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:24:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15835 states. [2021-12-21 13:24:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15835 to 12881. [2021-12-21 13:24:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12881 states, 11161 states have (on average 1.4193172654780037) internal successors, (15841), 11312 states have internal predecessors, (15841), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2021-12-21 13:24:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12881 states to 12881 states and 18616 transitions. [2021-12-21 13:24:49,777 INFO L78 Accepts]: Start accepts. Automaton has 12881 states and 18616 transitions. Word has length 97 [2021-12-21 13:24:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:49,778 INFO L470 AbstractCegarLoop]: Abstraction has 12881 states and 18616 transitions. [2021-12-21 13:24:49,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12881 states and 18616 transitions. [2021-12-21 13:24:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:24:49,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:49,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:24:49,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:24:49,788 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:49,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:49,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1442844846, now seen corresponding path program 1 times [2021-12-21 13:24:49,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:49,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109899444] [2021-12-21 13:24:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:49,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:49,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:49,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:24:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 13:24:49,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:49,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109899444] [2021-12-21 13:24:49,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109899444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:49,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:49,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:24:49,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553680957] [2021-12-21 13:24:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:49,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:24:49,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:24:49,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:24:49,881 INFO L87 Difference]: Start difference. First operand 12881 states and 18616 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:52,844 INFO L93 Difference]: Finished difference Result 43294 states and 62971 transitions. [2021-12-21 13:24:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 13:24:52,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2021-12-21 13:24:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:52,956 INFO L225 Difference]: With dead ends: 43294 [2021-12-21 13:24:52,956 INFO L226 Difference]: Without dead ends: 30426 [2021-12-21 13:24:52,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:24:52,990 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 704 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:52,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 884 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:24:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30426 states. [2021-12-21 13:24:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30426 to 24791. [2021-12-21 13:24:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24791 states, 21405 states have (on average 1.4053258584442887) internal successors, (30081), 21788 states have internal predecessors, (30081), 1921 states have call successors, (1921), 1184 states have call predecessors, (1921), 1464 states have return successors, (3566), 1850 states have call predecessors, (3566), 1921 states have call successors, (3566) [2021-12-21 13:24:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24791 states to 24791 states and 35568 transitions. [2021-12-21 13:24:54,754 INFO L78 Accepts]: Start accepts. Automaton has 24791 states and 35568 transitions. Word has length 97 [2021-12-21 13:24:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:54,755 INFO L470 AbstractCegarLoop]: Abstraction has 24791 states and 35568 transitions. [2021-12-21 13:24:54,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 24791 states and 35568 transitions. [2021-12-21 13:24:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:24:54,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:54,774 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:24:54,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:24:54,775 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash -923849748, now seen corresponding path program 1 times [2021-12-21 13:24:54,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:54,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792431041] [2021-12-21 13:24:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:54,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:54,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:24:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 13:24:54,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:54,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792431041] [2021-12-21 13:24:54,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792431041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:54,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:54,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:24:54,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786215259] [2021-12-21 13:24:54,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:54,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:24:54,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:24:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:24:54,862 INFO L87 Difference]: Start difference. First operand 24791 states and 35568 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:24:57,511 INFO L93 Difference]: Finished difference Result 30360 states and 43543 transitions. [2021-12-21 13:24:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 13:24:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2021-12-21 13:24:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:24:57,568 INFO L225 Difference]: With dead ends: 30360 [2021-12-21 13:24:57,568 INFO L226 Difference]: Without dead ends: 17020 [2021-12-21 13:24:57,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:24:57,595 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 711 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:24:57,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 874 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:24:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17020 states. [2021-12-21 13:24:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17020 to 13265. [2021-12-21 13:24:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13265 states, 11442 states have (on average 1.3800034958923266) internal successors, (15790), 11633 states have internal predecessors, (15790), 1048 states have call successors, (1048), 640 states have call predecessors, (1048), 774 states have return successors, (1724), 1007 states have call predecessors, (1724), 1048 states have call successors, (1724) [2021-12-21 13:24:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13265 states to 13265 states and 18562 transitions. [2021-12-21 13:24:58,551 INFO L78 Accepts]: Start accepts. Automaton has 13265 states and 18562 transitions. Word has length 97 [2021-12-21 13:24:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:24:58,552 INFO L470 AbstractCegarLoop]: Abstraction has 13265 states and 18562 transitions. [2021-12-21 13:24:58,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:24:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13265 states and 18562 transitions. [2021-12-21 13:24:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:24:58,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:24:58,561 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:24:58,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:24:58,561 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:24:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:24:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash -30363410, now seen corresponding path program 1 times [2021-12-21 13:24:58,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:24:58,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357169587] [2021-12-21 13:24:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:24:58,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:24:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:24:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:58,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:24:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:24:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:58,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:24:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:58,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:24:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:24:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:24:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 13:24:58,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:24:58,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357169587] [2021-12-21 13:24:58,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357169587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:24:58,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:24:58,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:24:58,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634445699] [2021-12-21 13:24:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:24:58,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:24:58,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:24:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:24:58,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:24:58,635 INFO L87 Difference]: Start difference. First operand 13265 states and 18562 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:00,433 INFO L93 Difference]: Finished difference Result 16782 states and 23535 transitions. [2021-12-21 13:25:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 13:25:00,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2021-12-21 13:25:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:00,464 INFO L225 Difference]: With dead ends: 16782 [2021-12-21 13:25:00,464 INFO L226 Difference]: Without dead ends: 9172 [2021-12-21 13:25:00,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:25:00,484 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 703 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:00,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 878 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:25:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2021-12-21 13:25:01,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 7349. [2021-12-21 13:25:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7349 states, 6338 states have (on average 1.3628905017355633) internal successors, (8638), 6433 states have internal predecessors, (8638), 592 states have call successors, (592), 356 states have call predecessors, (592), 418 states have return successors, (890), 567 states have call predecessors, (890), 592 states have call successors, (890) [2021-12-21 13:25:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7349 states to 7349 states and 10120 transitions. [2021-12-21 13:25:01,132 INFO L78 Accepts]: Start accepts. Automaton has 7349 states and 10120 transitions. Word has length 97 [2021-12-21 13:25:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:01,133 INFO L470 AbstractCegarLoop]: Abstraction has 7349 states and 10120 transitions. [2021-12-21 13:25:01,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 7349 states and 10120 transitions. [2021-12-21 13:25:01,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:25:01,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:01,138 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:01,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:25:01,138 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2079751252, now seen corresponding path program 1 times [2021-12-21 13:25:01,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:01,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082719963] [2021-12-21 13:25:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:01,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:25:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:25:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:25:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:25:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 13:25:01,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:01,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082719963] [2021-12-21 13:25:01,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082719963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:01,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:01,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:25:01,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634704827] [2021-12-21 13:25:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:01,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:25:01,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:01,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:25:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:25:01,218 INFO L87 Difference]: Start difference. First operand 7349 states and 10120 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:02,834 INFO L93 Difference]: Finished difference Result 14511 states and 19925 transitions. [2021-12-21 13:25:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 13:25:02,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2021-12-21 13:25:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:02,857 INFO L225 Difference]: With dead ends: 14511 [2021-12-21 13:25:02,857 INFO L226 Difference]: Without dead ends: 8997 [2021-12-21 13:25:02,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:25:02,868 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 687 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:02,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 920 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:25:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2021-12-21 13:25:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 5444. [2021-12-21 13:25:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 4731 states have (on average 1.3472838723314309) internal successors, (6374), 4790 states have internal predecessors, (6374), 418 states have call successors, (418), 260 states have call predecessors, (418), 294 states have return successors, (552), 397 states have call predecessors, (552), 418 states have call successors, (552) [2021-12-21 13:25:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7344 transitions. [2021-12-21 13:25:03,407 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7344 transitions. Word has length 97 [2021-12-21 13:25:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:03,408 INFO L470 AbstractCegarLoop]: Abstraction has 5444 states and 7344 transitions. [2021-12-21 13:25:03,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7344 transitions. [2021-12-21 13:25:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:25:03,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:03,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:03,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:25:03,411 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1317822766, now seen corresponding path program 1 times [2021-12-21 13:25:03,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:03,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475814495] [2021-12-21 13:25:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:03,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:25:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:25:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:25:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:25:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 13:25:03,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:03,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475814495] [2021-12-21 13:25:03,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475814495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:03,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:03,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:25:03,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726460630] [2021-12-21 13:25:03,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:03,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:25:03,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:25:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:25:03,496 INFO L87 Difference]: Start difference. First operand 5444 states and 7344 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:05,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:05,014 INFO L93 Difference]: Finished difference Result 11742 states and 15872 transitions. [2021-12-21 13:25:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 13:25:05,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2021-12-21 13:25:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:05,027 INFO L225 Difference]: With dead ends: 11742 [2021-12-21 13:25:05,028 INFO L226 Difference]: Without dead ends: 7441 [2021-12-21 13:25:05,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:25:05,034 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 909 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:05,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 791 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:25:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2021-12-21 13:25:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 5365. [2021-12-21 13:25:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 4666 states have (on average 1.342477496785255) internal successors, (6264), 4711 states have internal predecessors, (6264), 418 states have call successors, (418), 260 states have call predecessors, (418), 280 states have return successors, (522), 395 states have call predecessors, (522), 418 states have call successors, (522) [2021-12-21 13:25:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7204 transitions. [2021-12-21 13:25:05,446 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7204 transitions. Word has length 97 [2021-12-21 13:25:05,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:05,447 INFO L470 AbstractCegarLoop]: Abstraction has 5365 states and 7204 transitions. [2021-12-21 13:25:05,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:05,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7204 transitions. [2021-12-21 13:25:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:25:05,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:05,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:05,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:25:05,449 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1565969260, now seen corresponding path program 1 times [2021-12-21 13:25:05,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:05,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240227643] [2021-12-21 13:25:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:05,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:05,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:25:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:05,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:05,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:25:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:25:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:25:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 13:25:05,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:05,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240227643] [2021-12-21 13:25:05,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240227643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:05,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:05,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:05,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604286106] [2021-12-21 13:25:05,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:05,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:05,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:05,515 INFO L87 Difference]: Start difference. First operand 5365 states and 7204 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:06,792 INFO L93 Difference]: Finished difference Result 13848 states and 18568 transitions. [2021-12-21 13:25:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:25:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2021-12-21 13:25:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:06,812 INFO L225 Difference]: With dead ends: 13848 [2021-12-21 13:25:06,812 INFO L226 Difference]: Without dead ends: 8498 [2021-12-21 13:25:06,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:25:06,819 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 676 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:06,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 459 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:25:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2021-12-21 13:25:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 6336. [2021-12-21 13:25:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 5571 states have (on average 1.3055106803087417) internal successors, (7273), 5622 states have internal predecessors, (7273), 434 states have call successors, (434), 298 states have call predecessors, (434), 330 states have return successors, (598), 417 states have call predecessors, (598), 434 states have call successors, (598) [2021-12-21 13:25:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 8305 transitions. [2021-12-21 13:25:07,450 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 8305 transitions. Word has length 97 [2021-12-21 13:25:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:07,450 INFO L470 AbstractCegarLoop]: Abstraction has 6336 states and 8305 transitions. [2021-12-21 13:25:07,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 13:25:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 8305 transitions. [2021-12-21 13:25:07,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:25:07,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:07,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:07,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:25:07,453 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1989615982, now seen corresponding path program 1 times [2021-12-21 13:25:07,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:07,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067599859] [2021-12-21 13:25:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:07,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:25:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:25:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:25:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:25:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 13:25:07,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067599859] [2021-12-21 13:25:07,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067599859] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:25:07,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288171981] [2021-12-21 13:25:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:07,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:25:07,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:25:07,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:25:07,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:25:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:07,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:25:07,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:25:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:25:07,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:25:07,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288171981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:07,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:25:07,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-21 13:25:07,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573057920] [2021-12-21 13:25:07,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:07,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:25:07,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:07,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:25:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:07,831 INFO L87 Difference]: Start difference. First operand 6336 states and 8305 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 13:25:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:09,015 INFO L93 Difference]: Finished difference Result 17959 states and 23682 transitions. [2021-12-21 13:25:09,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:25:09,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 97 [2021-12-21 13:25:09,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:09,042 INFO L225 Difference]: With dead ends: 17959 [2021-12-21 13:25:09,042 INFO L226 Difference]: Without dead ends: 11638 [2021-12-21 13:25:09,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:09,056 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 174 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:09,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 594 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:25:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2021-12-21 13:25:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 11638. [2021-12-21 13:25:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11638 states, 10216 states have (on average 1.293265465935787) internal successors, (13212), 10309 states have internal predecessors, (13212), 806 states have call successors, (806), 554 states have call predecessors, (806), 615 states have return successors, (1185), 778 states have call predecessors, (1185), 806 states have call successors, (1185) [2021-12-21 13:25:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11638 states to 11638 states and 15203 transitions. [2021-12-21 13:25:10,244 INFO L78 Accepts]: Start accepts. Automaton has 11638 states and 15203 transitions. Word has length 97 [2021-12-21 13:25:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:10,244 INFO L470 AbstractCegarLoop]: Abstraction has 11638 states and 15203 transitions. [2021-12-21 13:25:10,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 13:25:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 11638 states and 15203 transitions. [2021-12-21 13:25:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 13:25:10,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:10,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:10,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 13:25:10,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:25:10,471 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:10,471 INFO L85 PathProgramCache]: Analyzing trace with hash -487614150, now seen corresponding path program 1 times [2021-12-21 13:25:10,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:10,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571729633] [2021-12-21 13:25:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:10,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:25:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:25:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:25:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:25:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 13:25:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:25:10,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:10,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571729633] [2021-12-21 13:25:10,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571729633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:10,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:10,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:25:10,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321429772] [2021-12-21 13:25:10,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:10,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:25:10,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:25:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:25:10,596 INFO L87 Difference]: Start difference. First operand 11638 states and 15203 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-21 13:25:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:14,082 INFO L93 Difference]: Finished difference Result 40822 states and 53504 transitions. [2021-12-21 13:25:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:25:14,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2021-12-21 13:25:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:14,144 INFO L225 Difference]: With dead ends: 40822 [2021-12-21 13:25:14,144 INFO L226 Difference]: Without dead ends: 29205 [2021-12-21 13:25:14,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:25:14,165 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 832 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:14,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 627 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:25:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29205 states. [2021-12-21 13:25:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29205 to 25930. [2021-12-21 13:25:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25930 states, 22816 states have (on average 1.267093267882188) internal successors, (28910), 23200 states have internal predecessors, (28910), 1541 states have call successors, (1541), 1086 states have call predecessors, (1541), 1572 states have return successors, (3248), 1651 states have call predecessors, (3248), 1541 states have call successors, (3248) [2021-12-21 13:25:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25930 states to 25930 states and 33699 transitions. [2021-12-21 13:25:16,932 INFO L78 Accepts]: Start accepts. Automaton has 25930 states and 33699 transitions. Word has length 117 [2021-12-21 13:25:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:25:16,933 INFO L470 AbstractCegarLoop]: Abstraction has 25930 states and 33699 transitions. [2021-12-21 13:25:16,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-21 13:25:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 25930 states and 33699 transitions. [2021-12-21 13:25:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 13:25:16,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:25:16,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:25:16,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:25:16,942 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:25:16,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:25:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1526198724, now seen corresponding path program 1 times [2021-12-21 13:25:16,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:25:16,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490428478] [2021-12-21 13:25:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:25:16,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:25:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:25:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:25:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:25:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:25:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:25:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:25:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 13:25:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:25:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:25:17,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:25:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490428478] [2021-12-21 13:25:17,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490428478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:25:17,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:25:17,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:25:17,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392062520] [2021-12-21 13:25:17,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:25:17,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:25:17,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:25:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:25:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:25:17,003 INFO L87 Difference]: Start difference. First operand 25930 states and 33699 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-21 13:25:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:25:20,692 INFO L93 Difference]: Finished difference Result 57023 states and 74012 transitions. [2021-12-21 13:25:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:25:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2021-12-21 13:25:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:25:20,762 INFO L225 Difference]: With dead ends: 57023 [2021-12-21 13:25:20,762 INFO L226 Difference]: Without dead ends: 31110 [2021-12-21 13:25:20,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:25:20,801 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 423 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:25:20,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 329 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:25:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states.