./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.10.cil-2.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 f17b4934c356e2ce9ba49d61eb1cce33fd0fc691ea6c2b102ce8a7ddd1bdeb11 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:10:21,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:10:21,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:10:21,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:10:21,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:10:21,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:10:21,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:10:21,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:10:21,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:10:21,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:10:21,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:10:21,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:10:21,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:10:21,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:10:21,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:10:21,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:10:21,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:10:21,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:10:21,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:10:21,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:10:21,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:10:21,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:10:21,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:10:21,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:10:21,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:10:21,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:10:21,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:10:21,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:10:21,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:10:21,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:10:21,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:10:21,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:10:21,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:10:21,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:10:21,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:10:21,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:10:21,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:10:21,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:10:21,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:10:21,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:10:21,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:10:21,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:10:21,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:10:21,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:10:21,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:10:21,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:10:21,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:10:21,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:10:21,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:10:21,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:10:21,223 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:10:21,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:10:21,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:10:21,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:10:21,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:10:21,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:10:21,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:10:21,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:10:21,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:10:21,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:10:21,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:10:21,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:10:21,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:10:21,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:10:21,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:10:21,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:10:21,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:10:21,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:10:21,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:10:21,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:10:21,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:10:21,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:10:21,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:10:21,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:10:21,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:10:21,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:10:21,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17b4934c356e2ce9ba49d61eb1cce33fd0fc691ea6c2b102ce8a7ddd1bdeb11 [2021-12-21 14:10:21,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:10:21,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:10:21,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:10:21,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:10:21,468 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:10:21,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.10.cil-2.c [2021-12-21 14:10:21,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce35964a4/ea2470a4913f47cc93734cccdf0fa853/FLAGd3bc88cdf [2021-12-21 14:10:22,340 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:10:22,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.10.cil-2.c [2021-12-21 14:10:22,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce35964a4/ea2470a4913f47cc93734cccdf0fa853/FLAGd3bc88cdf [2021-12-21 14:10:22,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce35964a4/ea2470a4913f47cc93734cccdf0fa853 [2021-12-21 14:10:22,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:10:22,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:10:22,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:10:22,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:10:22,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:10:22,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:10:22" (1/1) ... [2021-12-21 14:10:22,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e95799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:22, skipping insertion in model container [2021-12-21 14:10:22,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:10:22" (1/1) ... [2021-12-21 14:10:22,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:10:22,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:10:24,200 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/combinations/Problem05_label41+token_ring.10.cil-2.c[376251,376264] [2021-12-21 14:10:24,229 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/combinations/Problem05_label41+token_ring.10.cil-2.c[383339,383352] [2021-12-21 14:10:24,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:10:24,448 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:10:25,354 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/combinations/Problem05_label41+token_ring.10.cil-2.c[376251,376264] [2021-12-21 14:10:25,363 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/combinations/Problem05_label41+token_ring.10.cil-2.c[383339,383352] [2021-12-21 14:10:25,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:10:25,469 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:10:25,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25 WrapperNode [2021-12-21 14:10:25,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:10:25,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:10:25,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:10:25,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:10:25,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:25,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:25,850 INFO L137 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2021-12-21 14:10:25,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:10:25,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:10:25,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:10:25,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:10:25,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:25,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:25,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:26,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:26,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:26,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:26,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:26,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:10:26,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:10:26,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:10:26,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:10:26,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (1/1) ... [2021-12-21 14:10:26,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:10:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:10:26,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 14:10:26,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 14:10:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:10:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:10:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:10:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:10:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:10:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:10:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:10:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:10:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:10:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:10:26,470 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:10:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:10:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:10:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:10:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:10:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:10:26,580 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:10:26,582 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:10:32,281 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:10:32,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:10:32,307 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-21 14:10:32,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:10:32 BoogieIcfgContainer [2021-12-21 14:10:32,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:10:32,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:10:32,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:10:32,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:10:32,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:10:22" (1/3) ... [2021-12-21 14:10:32,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c1a93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:10:32, skipping insertion in model container [2021-12-21 14:10:32,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:25" (2/3) ... [2021-12-21 14:10:32,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c1a93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:10:32, skipping insertion in model container [2021-12-21 14:10:32,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:10:32" (3/3) ... [2021-12-21 14:10:32,318 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.10.cil-2.c [2021-12-21 14:10:32,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:10:32,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:10:32,369 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:10:32,374 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:10:32,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:10:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 14:10:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:32,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:32,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:32,436 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:32,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2021-12-21 14:10:32,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:32,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865501311] [2021-12-21 14:10:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:32,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:32,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:32,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:32,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865501311] [2021-12-21 14:10:32,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865501311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:32,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:32,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:10:32,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380917532] [2021-12-21 14:10:32,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:32,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:10:32,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:10:32,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:10:32,988 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-12-21 14:10:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:34,367 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2021-12-21 14:10:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:10:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:34,409 INFO L225 Difference]: With dead ends: 5140 [2021-12-21 14:10:34,409 INFO L226 Difference]: Without dead ends: 2568 [2021-12-21 14:10:34,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:10:34,426 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17020 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:34,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 17020 Invalid, 656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 14:10:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-21 14:10:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2021-12-21 14:10:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 14:10:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2021-12-21 14:10:34,582 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2021-12-21 14:10:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:10:34,583 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2021-12-21 14:10:34,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-12-21 14:10:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2021-12-21 14:10:34,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:34,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:34,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:34,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:10:34,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:34,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2021-12-21 14:10:34,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:34,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635305045] [2021-12-21 14:10:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:34,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:34,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635305045] [2021-12-21 14:10:34,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635305045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:34,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:34,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:10:34,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601763238] [2021-12-21 14:10:34,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:34,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:10:34,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:10:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:10:34,780 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:37,799 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2021-12-21 14:10:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:10:37,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:37,813 INFO L225 Difference]: With dead ends: 3341 [2021-12-21 14:10:37,814 INFO L226 Difference]: Without dead ends: 3032 [2021-12-21 14:10:37,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:10:37,817 INFO L933 BasicCegarLoop]: 4828 mSDtfsCounter, 5220 mSDsluCounter, 17526 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 22354 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:37,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5237 Valid, 22354 Invalid, 2805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:10:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-21 14:10:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2021-12-21 14:10:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-21 14:10:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2021-12-21 14:10:37,900 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2021-12-21 14:10:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:10:37,900 INFO L470 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2021-12-21 14:10:37,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2021-12-21 14:10:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:37,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:37,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:37,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:10:37,906 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2021-12-21 14:10:37,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:37,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433635801] [2021-12-21 14:10:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:37,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:38,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:38,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:38,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433635801] [2021-12-21 14:10:38,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433635801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:38,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:38,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:10:38,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772325812] [2021-12-21 14:10:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:38,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:10:38,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:10:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:10:38,044 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:40,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:40,867 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2021-12-21 14:10:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:10:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:40,885 INFO L225 Difference]: With dead ends: 4476 [2021-12-21 14:10:40,885 INFO L226 Difference]: Without dead ends: 3842 [2021-12-21 14:10:40,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:10:40,889 INFO L933 BasicCegarLoop]: 4755 mSDtfsCounter, 5260 mSDsluCounter, 17435 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 22190 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:40,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5277 Valid, 22190 Invalid, 2680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 14:10:40,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-12-21 14:10:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2021-12-21 14:10:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-21 14:10:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2021-12-21 14:10:41,036 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2021-12-21 14:10:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:10:41,037 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2021-12-21 14:10:41,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2021-12-21 14:10:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:41,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:41,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:41,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:10:41,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2021-12-21 14:10:41,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:41,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831034944] [2021-12-21 14:10:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:41,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:41,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:41,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:41,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:41,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:41,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831034944] [2021-12-21 14:10:41,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831034944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:41,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:41,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:10:41,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222853640] [2021-12-21 14:10:41,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:41,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:10:41,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:41,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:10:41,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:10:41,193 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:44,012 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2021-12-21 14:10:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:10:44,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:44,036 INFO L225 Difference]: With dead ends: 6696 [2021-12-21 14:10:44,036 INFO L226 Difference]: Without dead ends: 5460 [2021-12-21 14:10:44,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:10:44,042 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22337 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:44,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22337 Invalid, 2812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 14:10:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-12-21 14:10:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2021-12-21 14:10:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-21 14:10:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2021-12-21 14:10:44,230 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2021-12-21 14:10:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:10:44,231 INFO L470 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2021-12-21 14:10:44,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2021-12-21 14:10:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:44,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:44,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:44,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:10:44,241 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:44,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2021-12-21 14:10:44,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:44,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884693286] [2021-12-21 14:10:44,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:44,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:44,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:44,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:44,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884693286] [2021-12-21 14:10:44,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884693286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:44,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:44,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:10:44,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125098949] [2021-12-21 14:10:44,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:44,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:10:44,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:10:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:10:44,388 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:47,173 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2021-12-21 14:10:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:10:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:47,210 INFO L225 Difference]: With dead ends: 11134 [2021-12-21 14:10:47,210 INFO L226 Difference]: Without dead ends: 8692 [2021-12-21 14:10:47,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:10:47,222 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22334 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:47,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22334 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 14:10:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2021-12-21 14:10:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2021-12-21 14:10:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-21 14:10:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2021-12-21 14:10:47,556 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2021-12-21 14:10:47,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:10:47,558 INFO L470 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2021-12-21 14:10:47,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2021-12-21 14:10:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:47,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:47,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:47,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:10:47,564 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2021-12-21 14:10:47,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:47,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449088318] [2021-12-21 14:10:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:47,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:47,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:47,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:47,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449088318] [2021-12-21 14:10:47,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449088318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:47,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:47,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:10:47,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887736221] [2021-12-21 14:10:47,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:47,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:10:47,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:47,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:10:47,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:10:47,725 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:50,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:50,952 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2021-12-21 14:10:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:10:50,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:51,008 INFO L225 Difference]: With dead ends: 20008 [2021-12-21 14:10:51,008 INFO L226 Difference]: Without dead ends: 15148 [2021-12-21 14:10:51,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:10:51,032 INFO L933 BasicCegarLoop]: 4813 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22331 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:51,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22331 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 14:10:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2021-12-21 14:10:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2021-12-21 14:10:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-21 14:10:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2021-12-21 14:10:51,662 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2021-12-21 14:10:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:10:51,663 INFO L470 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2021-12-21 14:10:51,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2021-12-21 14:10:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:51,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:51,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:51,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:10:51,672 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2021-12-21 14:10:51,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:51,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573424872] [2021-12-21 14:10:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:51,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:51,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:51,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:51,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573424872] [2021-12-21 14:10:51,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573424872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:51,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:51,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:10:51,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203067762] [2021-12-21 14:10:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:51,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:10:51,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:10:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:10:51,816 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:55,428 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2021-12-21 14:10:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:10:55,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:55,528 INFO L225 Difference]: With dead ends: 37754 [2021-12-21 14:10:55,529 INFO L226 Difference]: Without dead ends: 28044 [2021-12-21 14:10:55,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:10:55,572 INFO L933 BasicCegarLoop]: 4810 mSDtfsCounter, 5219 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22328 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:55,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5236 Valid, 22328 Invalid, 2794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 14:10:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2021-12-21 14:10:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2021-12-21 14:10:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-21 14:10:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2021-12-21 14:10:56,626 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2021-12-21 14:10:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:10:56,627 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2021-12-21 14:10:56,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2021-12-21 14:10:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:10:56,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:10:56,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:10:56,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:10:56,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:10:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:10:56,641 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2021-12-21 14:10:56,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:10:56,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905462789] [2021-12-21 14:10:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:10:56,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:10:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:10:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:56,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:10:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:10:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:56,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:10:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:10:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:10:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:10:56,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:10:56,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905462789] [2021-12-21 14:10:56,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905462789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:10:56,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:10:56,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:10:56,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493507650] [2021-12-21 14:10:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:10:56,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:10:56,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:10:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:10:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:10:56,773 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:10:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:10:59,557 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2021-12-21 14:10:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:10:59,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:10:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:10:59,668 INFO L225 Difference]: With dead ends: 47941 [2021-12-21 14:10:59,668 INFO L226 Difference]: Without dead ends: 28499 [2021-12-21 14:10:59,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:10:59,725 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4916 mSDsluCounter, 16636 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 21132 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:10:59,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4934 Valid, 21132 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:10:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2021-12-21 14:11:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2021-12-21 14:11:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-21 14:11:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2021-12-21 14:11:00,989 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2021-12-21 14:11:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:00,990 INFO L470 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2021-12-21 14:11:00,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2021-12-21 14:11:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:11:01,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:01,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:01,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:11:01,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2021-12-21 14:11:01,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:01,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324823501] [2021-12-21 14:11:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:01,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:11:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:11:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:11:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:11:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:01,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:01,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324823501] [2021-12-21 14:11:01,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324823501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:01,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:01,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:01,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999769522] [2021-12-21 14:11:01,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:01,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:01,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:01,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:01,156 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:06,476 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2021-12-21 14:11:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:06,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2021-12-21 14:11:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:06,676 INFO L225 Difference]: With dead ends: 73117 [2021-12-21 14:11:06,676 INFO L226 Difference]: Without dead ends: 53677 [2021-12-21 14:11:06,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:06,748 INFO L933 BasicCegarLoop]: 4794 mSDtfsCounter, 5247 mSDsluCounter, 17518 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:06,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 22312 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 14:11:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2021-12-21 14:11:09,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2021-12-21 14:11:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-21 14:11:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2021-12-21 14:11:09,841 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2021-12-21 14:11:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:09,841 INFO L470 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2021-12-21 14:11:09,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2021-12-21 14:11:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 14:11:09,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:09,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:09,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:11:09,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:09,868 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2021-12-21 14:11:09,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:09,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700298465] [2021-12-21 14:11:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:09,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:09,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 14:11:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 14:11:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:11:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:10,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 14:11:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:10,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700298465] [2021-12-21 14:11:10,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700298465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:10,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:10,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:10,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394047348] [2021-12-21 14:11:10,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:10,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:10,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:10,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:10,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:10,047 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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)