./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.07.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.07.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 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:42:41,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:42:41,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:42:41,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:42:41,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:42:41,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:42:41,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:42:41,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:42:41,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:42:41,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:42:41,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:42:41,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:42:41,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:42:41,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:42:41,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:42:41,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:42:41,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:42:41,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:42:41,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:42:41,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:42:41,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:42:41,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:42:41,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:42:41,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:42:41,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:42:41,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:42:41,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:42:41,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:42:41,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:42:41,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:42:41,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:42:41,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:42:41,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:42:41,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:42:41,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:42:41,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:42:41,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:42:41,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:42:41,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:42:41,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:42:41,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:42:41,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:42:41,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:42:41,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:42:41,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:42:41,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:42:41,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:42:41,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:42:41,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:42:41,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:42:41,382 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:42:41,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:42:41,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:42:41,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:42:41,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:42:41,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:42:41,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:42:41,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:42:41,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:42:41,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:42:41,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:42:41,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:42:41,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:42:41,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:42:41,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:42:41,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:42:41,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:42:41,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:42:41,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:42:41,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:42:41,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:42:41,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:42:41,388 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:42:41,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:42:41,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:42:41,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:42:41,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f [2021-12-17 15:42:41,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:42:41,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:42:41,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:42:41,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:42:41,639 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:42:41,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.07.cil.c [2021-12-17 15:42:41,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfba908ee/7f8dcae02ab44e838fa45486904a1af2/FLAG7ca968e28 [2021-12-17 15:42:42,147 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:42:42,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.07.cil.c [2021-12-17 15:42:42,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfba908ee/7f8dcae02ab44e838fa45486904a1af2/FLAG7ca968e28 [2021-12-17 15:42:42,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfba908ee/7f8dcae02ab44e838fa45486904a1af2 [2021-12-17 15:42:42,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:42:42,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:42:42,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:42:42,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:42:42,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:42:42,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4538098c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42, skipping insertion in model container [2021-12-17 15:42:42,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:42:42,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:42:42,744 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.07.cil.c[706,719] [2021-12-17 15:42:42,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:42:42,853 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:42:42,868 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.07.cil.c[706,719] [2021-12-17 15:42:42,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:42:42,925 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:42:42,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42 WrapperNode [2021-12-17 15:42:42,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:42:42,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:42:42,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:42:42,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:42:42,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,976 INFO L137 Inliner]: procedures = 42, calls = 51, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 549 [2021-12-17 15:42:42,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:42:42,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:42:42,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:42:42,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:42:42,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:42,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:43,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:43,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:43,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:42:43,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:42:43,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:42:43,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:42:43,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (1/1) ... [2021-12-17 15:42:43,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:42:43,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:42:43,044 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) [2021-12-17 15:42:43,083 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 [2021-12-17 15:42:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:42:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 15:42:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 15:42:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 15:42:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 15:42:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 15:42:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 15:42:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 15:42:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 15:42:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 15:42:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 15:42:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:42:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 15:42:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 15:42:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:42:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:42:43,238 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:42:43,241 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:42:43,628 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:42:43,637 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:42:43,638 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-17 15:42:43,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:42:43 BoogieIcfgContainer [2021-12-17 15:42:43,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:42:43,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:42:43,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:42:43,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:42:43,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:42:42" (1/3) ... [2021-12-17 15:42:43,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a43e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:42:43, skipping insertion in model container [2021-12-17 15:42:43,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:42" (2/3) ... [2021-12-17 15:42:43,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a43e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:42:43, skipping insertion in model container [2021-12-17 15:42:43,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:42:43" (3/3) ... [2021-12-17 15:42:43,648 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.07.cil.c [2021-12-17 15:42:43,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:42:43,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:42:43,697 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:42:43,703 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 [2021-12-17 15:42:43,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:42:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 225 states have (on average 1.64) internal successors, (369), 227 states have internal predecessors, (369), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-17 15:42:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:43,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:43,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:43,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:43,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash 208630803, now seen corresponding path program 1 times [2021-12-17 15:42:43,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:43,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101431301] [2021-12-17 15:42:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:43,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:44,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:44,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101431301] [2021-12-17 15:42:44,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101431301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:44,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:44,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:42:44,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149733514] [2021-12-17 15:42:44,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:44,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:42:44,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:44,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:42:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:42:44,274 INFO L87 Difference]: Start difference. First operand has 253 states, 225 states have (on average 1.64) internal successors, (369), 227 states have internal predecessors, (369), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:42:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:45,144 INFO L93 Difference]: Finished difference Result 580 states and 946 transitions. [2021-12-17 15:42:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:42:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 127 [2021-12-17 15:42:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:45,157 INFO L225 Difference]: With dead ends: 580 [2021-12-17 15:42:45,157 INFO L226 Difference]: Without dead ends: 333 [2021-12-17 15:42:45,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:45,165 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 641 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:45,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 699 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:42:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-17 15:42:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 248. [2021-12-17 15:42:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 221 states have (on average 1.5384615384615385) internal successors, (340), 222 states have internal predecessors, (340), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-17 15:42:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 380 transitions. [2021-12-17 15:42:45,222 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 380 transitions. Word has length 127 [2021-12-17 15:42:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:45,222 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 380 transitions. [2021-12-17 15:42:45,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:42:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 380 transitions. [2021-12-17 15:42:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:45,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:45,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:45,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:42:45,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:45,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash 541273941, now seen corresponding path program 1 times [2021-12-17 15:42:45,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:45,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264556191] [2021-12-17 15:42:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:45,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:45,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:45,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264556191] [2021-12-17 15:42:45,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264556191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:45,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:45,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:42:45,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913346810] [2021-12-17 15:42:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:45,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:42:45,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:42:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:42:45,387 INFO L87 Difference]: Start difference. First operand 248 states and 380 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 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) [2021-12-17 15:42:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:46,329 INFO L93 Difference]: Finished difference Result 565 states and 881 transitions. [2021-12-17 15:42:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:42:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:46,333 INFO L225 Difference]: With dead ends: 565 [2021-12-17 15:42:46,333 INFO L226 Difference]: Without dead ends: 332 [2021-12-17 15:42:46,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:42:46,335 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 630 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:46,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 816 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:42:46,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-12-17 15:42:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 248. [2021-12-17 15:42:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 221 states have (on average 1.5339366515837105) internal successors, (339), 222 states have internal predecessors, (339), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-17 15:42:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 379 transitions. [2021-12-17 15:42:46,359 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 379 transitions. Word has length 127 [2021-12-17 15:42:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:46,365 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 379 transitions. [2021-12-17 15:42:46,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 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) [2021-12-17 15:42:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 379 transitions. [2021-12-17 15:42:46,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:46,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:46,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:46,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:42:46,369 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1590076781, now seen corresponding path program 1 times [2021-12-17 15:42:46,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:46,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025237166] [2021-12-17 15:42:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:46,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:46,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:46,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025237166] [2021-12-17 15:42:46,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025237166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:46,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:46,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:46,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30008153] [2021-12-17 15:42:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:46,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:46,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:46,522 INFO L87 Difference]: Start difference. First operand 248 states and 379 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-12-17 15:42:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:47,334 INFO L93 Difference]: Finished difference Result 565 states and 881 transitions. [2021-12-17 15:42:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:42:47,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:47,340 INFO L225 Difference]: With dead ends: 565 [2021-12-17 15:42:47,340 INFO L226 Difference]: Without dead ends: 332 [2021-12-17 15:42:47,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:42:47,343 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 788 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:47,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 847 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 15:42:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-12-17 15:42:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 248. [2021-12-17 15:42:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 221 states have (on average 1.5203619909502262) internal successors, (336), 222 states have internal predecessors, (336), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-17 15:42:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 376 transitions. [2021-12-17 15:42:47,366 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 376 transitions. Word has length 127 [2021-12-17 15:42:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:47,366 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 376 transitions. [2021-12-17 15:42:47,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-12-17 15:42:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 376 transitions. [2021-12-17 15:42:47,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:47,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:47,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:47,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:42:47,372 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1113642029, now seen corresponding path program 1 times [2021-12-17 15:42:47,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:47,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662373705] [2021-12-17 15:42:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:47,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:47,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662373705] [2021-12-17 15:42:47,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662373705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:47,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:47,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:42:47,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200879343] [2021-12-17 15:42:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:47,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:42:47,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:42:47,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:47,504 INFO L87 Difference]: Start difference. First operand 248 states and 376 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:49,434 INFO L93 Difference]: Finished difference Result 906 states and 1407 transitions. [2021-12-17 15:42:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 15:42:49,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:49,439 INFO L225 Difference]: With dead ends: 906 [2021-12-17 15:42:49,439 INFO L226 Difference]: Without dead ends: 673 [2021-12-17 15:42:49,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 15:42:49,442 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1039 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:49,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 2298 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 15:42:49,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-12-17 15:42:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 489. [2021-12-17 15:42:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 439 states have (on average 1.530751708428246) internal successors, (672), 441 states have internal predecessors, (672), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 37 states have call predecessors, (39), 36 states have call successors, (39) [2021-12-17 15:42:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 747 transitions. [2021-12-17 15:42:49,481 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 747 transitions. Word has length 127 [2021-12-17 15:42:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:49,481 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 747 transitions. [2021-12-17 15:42:49,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 747 transitions. [2021-12-17 15:42:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:49,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:49,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:49,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:42:49,484 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:49,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1039464789, now seen corresponding path program 1 times [2021-12-17 15:42:49,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:49,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667836470] [2021-12-17 15:42:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:49,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:49,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:49,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667836470] [2021-12-17 15:42:49,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667836470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:49,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:49,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:42:49,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554828084] [2021-12-17 15:42:49,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:49,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:42:49,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:49,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:42:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:49,605 INFO L87 Difference]: Start difference. First operand 489 states and 747 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:51,278 INFO L93 Difference]: Finished difference Result 1831 states and 2861 transitions. [2021-12-17 15:42:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 15:42:51,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:51,297 INFO L225 Difference]: With dead ends: 1831 [2021-12-17 15:42:51,297 INFO L226 Difference]: Without dead ends: 1357 [2021-12-17 15:42:51,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 15:42:51,305 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 1224 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:51,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 2044 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 15:42:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-12-17 15:42:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 994. [2021-12-17 15:42:51,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 896 states have (on average 1.5435267857142858) internal successors, (1383), 902 states have internal predecessors, (1383), 68 states have call successors, (68), 24 states have call predecessors, (68), 29 states have return successors, (83), 71 states have call predecessors, (83), 68 states have call successors, (83) [2021-12-17 15:42:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1534 transitions. [2021-12-17 15:42:51,382 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1534 transitions. Word has length 127 [2021-12-17 15:42:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:51,383 INFO L470 AbstractCegarLoop]: Abstraction has 994 states and 1534 transitions. [2021-12-17 15:42:51,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1534 transitions. [2021-12-17 15:42:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:51,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:51,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:51,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:42:51,386 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:51,387 INFO L85 PathProgramCache]: Analyzing trace with hash 416183187, now seen corresponding path program 1 times [2021-12-17 15:42:51,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:51,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381985567] [2021-12-17 15:42:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:51,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:51,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:51,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:51,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381985567] [2021-12-17 15:42:51,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381985567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:51,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:51,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:42:51,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192801426] [2021-12-17 15:42:51,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:51,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:42:51,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:51,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:42:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:51,527 INFO L87 Difference]: Start difference. First operand 994 states and 1534 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:53,406 INFO L93 Difference]: Finished difference Result 3765 states and 5938 transitions. [2021-12-17 15:42:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 15:42:53,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:53,422 INFO L225 Difference]: With dead ends: 3765 [2021-12-17 15:42:53,423 INFO L226 Difference]: Without dead ends: 2786 [2021-12-17 15:42:53,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 15:42:53,429 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1028 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:53,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 2283 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 15:42:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-12-17 15:42:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2067. [2021-12-17 15:42:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1867 states have (on average 1.5591858596679165) internal successors, (2911), 1887 states have internal predecessors, (2911), 132 states have call successors, (132), 48 states have call predecessors, (132), 67 states have return successors, (195), 139 states have call predecessors, (195), 132 states have call successors, (195) [2021-12-17 15:42:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3238 transitions. [2021-12-17 15:42:53,562 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3238 transitions. Word has length 127 [2021-12-17 15:42:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:53,563 INFO L470 AbstractCegarLoop]: Abstraction has 2067 states and 3238 transitions. [2021-12-17 15:42:53,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3238 transitions. [2021-12-17 15:42:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:53,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:53,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:53,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:42:53,568 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash 534624661, now seen corresponding path program 1 times [2021-12-17 15:42:53,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:53,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040401443] [2021-12-17 15:42:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:53,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:53,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040401443] [2021-12-17 15:42:53,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040401443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:53,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:53,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:42:53,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337670344] [2021-12-17 15:42:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:53,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:42:53,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:53,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:42:53,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:53,718 INFO L87 Difference]: Start difference. First operand 2067 states and 3238 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:55,489 INFO L93 Difference]: Finished difference Result 7863 states and 12590 transitions. [2021-12-17 15:42:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 15:42:55,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:55,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:55,517 INFO L225 Difference]: With dead ends: 7863 [2021-12-17 15:42:55,518 INFO L226 Difference]: Without dead ends: 5811 [2021-12-17 15:42:55,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 15:42:55,527 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1218 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:55,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 2036 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 15:42:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2021-12-17 15:42:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 4384. [2021-12-17 15:42:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 3962 states have (on average 1.5777385159010602) internal successors, (6251), 4028 states have internal predecessors, (6251), 260 states have call successors, (260), 96 states have call predecessors, (260), 161 states have return successors, (515), 275 states have call predecessors, (515), 260 states have call successors, (515) [2021-12-17 15:42:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 7026 transitions. [2021-12-17 15:42:55,768 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 7026 transitions. Word has length 127 [2021-12-17 15:42:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:55,769 INFO L470 AbstractCegarLoop]: Abstraction has 4384 states and 7026 transitions. [2021-12-17 15:42:55,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 7026 transitions. [2021-12-17 15:42:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:55,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:55,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:55,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:42:55,775 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1923918675, now seen corresponding path program 1 times [2021-12-17 15:42:55,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:55,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659672075] [2021-12-17 15:42:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:55,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:55,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:55,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659672075] [2021-12-17 15:42:55,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659672075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:55,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:55,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:55,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779535603] [2021-12-17 15:42:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:55,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:55,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:55,885 INFO L87 Difference]: Start difference. First operand 4384 states and 7026 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-12-17 15:42:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:56,876 INFO L93 Difference]: Finished difference Result 10826 states and 17711 transitions. [2021-12-17 15:42:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:56,910 INFO L225 Difference]: With dead ends: 10826 [2021-12-17 15:42:56,911 INFO L226 Difference]: Without dead ends: 6457 [2021-12-17 15:42:56,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:56,927 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 816 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:56,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 835 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:42:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2021-12-17 15:42:57,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 4384. [2021-12-17 15:42:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 3962 states have (on average 1.5737001514386673) internal successors, (6235), 4028 states have internal predecessors, (6235), 260 states have call successors, (260), 96 states have call predecessors, (260), 161 states have return successors, (515), 275 states have call predecessors, (515), 260 states have call successors, (515) [2021-12-17 15:42:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 7010 transitions. [2021-12-17 15:42:57,214 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 7010 transitions. Word has length 127 [2021-12-17 15:42:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:57,214 INFO L470 AbstractCegarLoop]: Abstraction has 4384 states and 7010 transitions. [2021-12-17 15:42:57,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-12-17 15:42:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 7010 transitions. [2021-12-17 15:42:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:42:57,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:57,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:57,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:42:57,221 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash -109475371, now seen corresponding path program 1 times [2021-12-17 15:42:57,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:57,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579351045] [2021-12-17 15:42:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:57,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:42:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:42:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:42:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:42:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:57,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:57,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579351045] [2021-12-17 15:42:57,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579351045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:57,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:57,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:42:57,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926695499] [2021-12-17 15:42:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:57,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:42:57,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:57,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:42:57,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:57,339 INFO L87 Difference]: Start difference. First operand 4384 states and 7010 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:42:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:59,734 INFO L93 Difference]: Finished difference Result 18120 states and 29446 transitions. [2021-12-17 15:42:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 15:42:59,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:42:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:59,816 INFO L225 Difference]: With dead ends: 18120 [2021-12-17 15:42:59,816 INFO L226 Difference]: Without dead ends: 13751 [2021-12-17 15:42:59,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 15:42:59,837 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 1078 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:59,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 2361 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 15:42:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2021-12-17 15:43:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 9332. [2021-12-17 15:43:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9332 states, 8428 states have (on average 1.594328429046037) internal successors, (13437), 8640 states have internal predecessors, (13437), 500 states have call successors, (500), 192 states have call predecessors, (500), 403 states have return successors, (1523), 531 states have call predecessors, (1523), 500 states have call successors, (1523) [2021-12-17 15:43:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 15460 transitions. [2021-12-17 15:43:00,376 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 15460 transitions. Word has length 127 [2021-12-17 15:43:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:00,377 INFO L470 AbstractCegarLoop]: Abstraction has 9332 states and 15460 transitions. [2021-12-17 15:43:00,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 15460 transitions. [2021-12-17 15:43:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:43:00,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:00,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:00,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:43:00,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1976184045, now seen corresponding path program 1 times [2021-12-17 15:43:00,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:00,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958018425] [2021-12-17 15:43:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:00,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:43:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:43:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:43:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:43:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:00,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:00,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958018425] [2021-12-17 15:43:00,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958018425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:00,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:00,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:43:00,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727775769] [2021-12-17 15:43:00,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:00,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:43:00,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:43:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:43:00,510 INFO L87 Difference]: Start difference. First operand 9332 states and 15460 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:02,817 INFO L93 Difference]: Finished difference Result 37166 states and 62858 transitions. [2021-12-17 15:43:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 15:43:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:43:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:02,935 INFO L225 Difference]: With dead ends: 37166 [2021-12-17 15:43:02,936 INFO L226 Difference]: Without dead ends: 27849 [2021-12-17 15:43:02,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 15:43:02,983 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1424 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:02,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2002 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 15:43:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27849 states. [2021-12-17 15:43:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27849 to 20006. [2021-12-17 15:43:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20006 states, 17992 states have (on average 1.6086594041796354) internal successors, (28943), 18658 states have internal predecessors, (28943), 964 states have call successors, (964), 384 states have call predecessors, (964), 1049 states have return successors, (5059), 1027 states have call predecessors, (5059), 964 states have call successors, (5059) [2021-12-17 15:43:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20006 states to 20006 states and 34966 transitions. [2021-12-17 15:43:04,203 INFO L78 Accepts]: Start accepts. Automaton has 20006 states and 34966 transitions. Word has length 127 [2021-12-17 15:43:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:04,205 INFO L470 AbstractCegarLoop]: Abstraction has 20006 states and 34966 transitions. [2021-12-17 15:43:04,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 20006 states and 34966 transitions. [2021-12-17 15:43:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:43:04,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:04,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:04,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 15:43:04,225 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash -78687279, now seen corresponding path program 1 times [2021-12-17 15:43:04,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:04,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412550782] [2021-12-17 15:43:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:04,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:43:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:43:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:43:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:43:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:04,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412550782] [2021-12-17 15:43:04,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412550782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:04,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:04,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:43:04,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108352023] [2021-12-17 15:43:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:04,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:43:04,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:43:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:43:04,341 INFO L87 Difference]: Start difference. First operand 20006 states and 34966 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:07,905 INFO L93 Difference]: Finished difference Result 78159 states and 141124 transitions. [2021-12-17 15:43:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 15:43:07,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:43:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:08,300 INFO L225 Difference]: With dead ends: 78159 [2021-12-17 15:43:08,301 INFO L226 Difference]: Without dead ends: 58168 [2021-12-17 15:43:08,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 15:43:08,373 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1235 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:08,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1248 Valid, 2058 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 15:43:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58168 states. [2021-12-17 15:43:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58168 to 43445. [2021-12-17 15:43:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43445 states, 38757 states have (on average 1.619707407694094) internal successors, (62775), 40817 states have internal predecessors, (62775), 1860 states have call successors, (1860), 768 states have call predecessors, (1860), 2827 states have return successors, (18243), 1987 states have call predecessors, (18243), 1860 states have call successors, (18243) [2021-12-17 15:43:10,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43445 states to 43445 states and 82878 transitions. [2021-12-17 15:43:10,709 INFO L78 Accepts]: Start accepts. Automaton has 43445 states and 82878 transitions. Word has length 127 [2021-12-17 15:43:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:10,709 INFO L470 AbstractCegarLoop]: Abstraction has 43445 states and 82878 transitions. [2021-12-17 15:43:10,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand 43445 states and 82878 transitions. [2021-12-17 15:43:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:43:10,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:10,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:10,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 15:43:10,746 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash 952353619, now seen corresponding path program 1 times [2021-12-17 15:43:10,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:10,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499467597] [2021-12-17 15:43:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:10,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:43:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:43:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:43:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:43:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:10,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499467597] [2021-12-17 15:43:10,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499467597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:10,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:10,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:43:10,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946686154] [2021-12-17 15:43:10,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:10,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:43:10,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:10,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:43:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:43:10,859 INFO L87 Difference]: Start difference. First operand 43445 states and 82878 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:16,503 INFO L93 Difference]: Finished difference Result 166187 states and 335044 transitions. [2021-12-17 15:43:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 15:43:16,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:43:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:17,433 INFO L225 Difference]: With dead ends: 166187 [2021-12-17 15:43:17,434 INFO L226 Difference]: Without dead ends: 122757 [2021-12-17 15:43:17,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 15:43:17,674 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1320 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:17,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 1994 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 15:43:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122757 states. [2021-12-17 15:43:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122757 to 95234. [2021-12-17 15:43:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95234 states, 83804 states have (on average 1.6237769080234834) internal successors, (136079), 90110 states have internal predecessors, (136079), 3588 states have call successors, (3588), 1536 states have call predecessors, (3588), 7841 states have return successors, (69123), 3843 states have call predecessors, (69123), 3588 states have call successors, (69123) [2021-12-17 15:43:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95234 states to 95234 states and 208790 transitions. [2021-12-17 15:43:24,273 INFO L78 Accepts]: Start accepts. Automaton has 95234 states and 208790 transitions. Word has length 127 [2021-12-17 15:43:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:24,273 INFO L470 AbstractCegarLoop]: Abstraction has 95234 states and 208790 transitions. [2021-12-17 15:43:24,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 95234 states and 208790 transitions. [2021-12-17 15:43:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 15:43:24,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:24,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:24,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 15:43:24,357 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash -954049647, now seen corresponding path program 1 times [2021-12-17 15:43:24,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:24,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561051336] [2021-12-17 15:43:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:24,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 15:43:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 15:43:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:43:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:43:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:24,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:24,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561051336] [2021-12-17 15:43:24,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561051336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:24,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:24,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:43:24,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821074069] [2021-12-17 15:43:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:24,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:43:24,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:43:24,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:43:24,470 INFO L87 Difference]: Start difference. First operand 95234 states and 208790 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-12-17 15:43:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:35,421 INFO L93 Difference]: Finished difference Result 355785 states and 856184 transitions. [2021-12-17 15:43:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 15:43:35,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 6 states have internal predecessors, (117), 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 127 [2021-12-17 15:43:35,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:37,166 INFO L225 Difference]: With dead ends: 355785 [2021-12-17 15:43:37,166 INFO L226 Difference]: Without dead ends: 260566 [2021-12-17 15:43:37,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 15:43:37,630 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1209 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:37,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 2018 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 15:43:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260566 states.