./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_label43+token_ring.10.cil-1.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 dc558ff06d1f59013c6fd3228f6de1555b4f43a79036afca93164a3b9d9173fd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:54:23,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:54:23,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:54:23,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:54:23,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:54:23,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:54:23,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:54:23,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:54:23,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:54:23,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:54:23,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:54:23,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:54:23,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:54:23,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:54:23,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:54:23,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:54:23,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:54:23,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:54:23,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:54:23,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:54:23,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:54:23,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:54:23,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:54:23,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:54:23,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:54:23,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:54:23,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:54:23,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:54:23,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:54:23,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:54:23,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:54:23,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:54:23,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:54:23,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:54:23,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:54:23,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:54:23,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:54:23,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:54:23,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:54:23,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:54:23,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:54:23,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:54:23,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:54:23,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:54:23,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:54:23,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:54:23,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:54:23,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:54:23,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:54:23,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:54:23,319 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:54:23,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:54:23,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:54:23,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:54:23,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:54:23,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:54:23,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:54:23,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:54:23,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:54:23,320 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:54:23,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:54:23,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:54:23,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:54:23,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:54:23,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:54:23,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:54:23,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:54:23,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:54:23,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:54:23,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:54:23,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:54:23,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:54:23,322 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:54:23,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:54:23,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:54:23,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc558ff06d1f59013c6fd3228f6de1555b4f43a79036afca93164a3b9d9173fd [2021-12-28 01:54:23,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:54:23,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:54:23,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:54:23,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:54:23,634 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:54:23,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c [2021-12-28 01:54:23,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebca8f2a/e7601e2e307e4636923d72a655a4b899/FLAGe5c9f995c [2021-12-28 01:54:24,460 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:54:24,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-1.c [2021-12-28 01:54:24,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebca8f2a/e7601e2e307e4636923d72a655a4b899/FLAGe5c9f995c [2021-12-28 01:54:24,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebca8f2a/e7601e2e307e4636923d72a655a4b899 [2021-12-28 01:54:24,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:54:24,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:54:24,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:54:24,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:54:24,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:54:24,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:54:24" (1/1) ... [2021-12-28 01:54:24,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2416713e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:24, skipping insertion in model container [2021-12-28 01:54:24,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:54:24" (1/1) ... [2021-12-28 01:54:24,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:54:24,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:54:26,072 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_label43+token_ring.10.cil-1.c[381679,381692] [2021-12-28 01:54:26,088 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_label43+token_ring.10.cil-1.c[383339,383352] [2021-12-28 01:54:26,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:54:26,301 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:54:27,143 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_label43+token_ring.10.cil-1.c[381679,381692] [2021-12-28 01:54:27,147 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_label43+token_ring.10.cil-1.c[383339,383352] [2021-12-28 01:54:27,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:54:27,238 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:54:27,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27 WrapperNode [2021-12-28 01:54:27,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:54:27,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:54:27,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:54:27,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:54:27,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,657 INFO L137 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13088 [2021-12-28 01:54:27,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:54:27,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:54:27,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:54:27,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:54:27,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:27,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:28,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:54:28,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:54:28,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:54:28,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:54:28,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (1/1) ... [2021-12-28 01:54:28,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:54:28,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:54:28,209 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) [2021-12-28 01:54:28,221 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 [2021-12-28 01:54:28,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:54:28,250 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:54:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:54:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:54:28,258 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:54:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:54:28,259 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:54:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-28 01:54:28,260 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-28 01:54:28,260 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:54:28,260 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:54:28,275 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:54:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:54:28,275 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:54:28,275 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:54:28,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:54:28,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:54:28,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:54:28,446 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:54:28,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:54:32,998 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:54:33,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:54:33,023 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-28 01:54:33,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:54:33 BoogieIcfgContainer [2021-12-28 01:54:33,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:54:33,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:54:33,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:54:33,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:54:33,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:54:24" (1/3) ... [2021-12-28 01:54:33,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccf056c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:54:33, skipping insertion in model container [2021-12-28 01:54:33,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:27" (2/3) ... [2021-12-28 01:54:33,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccf056c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:54:33, skipping insertion in model container [2021-12-28 01:54:33,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:54:33" (3/3) ... [2021-12-28 01:54:33,033 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-1.c [2021-12-28 01:54:33,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:54:33,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:54:33,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:54:33,085 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 [2021-12-28 01:54:33,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:54:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-28 01:54:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:33,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:33,150 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, 1] [2021-12-28 01:54:33,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash -289990772, now seen corresponding path program 1 times [2021-12-28 01:54:33,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:33,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586488993] [2021-12-28 01:54:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:33,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:33,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:33,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:33,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:33,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586488993] [2021-12-28 01:54:33,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586488993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:33,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:33,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:54:33,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021479112] [2021-12-28 01:54:33,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:33,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:54:33,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:33,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:54:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:54:33,575 INFO L87 Difference]: Start difference. First operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:34,763 INFO L93 Difference]: Finished difference Result 5155 states and 9474 transitions. [2021-12-28 01:54:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:54:34,765 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:34,786 INFO L225 Difference]: With dead ends: 5155 [2021-12-28 01:54:34,786 INFO L226 Difference]: Without dead ends: 2575 [2021-12-28 01:54:34,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:54:34,800 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 896 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:34,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 17032 Invalid, 678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 01:54:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2021-12-28 01:54:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2455. [2021-12-28 01:54:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8306484923585296) internal successors, (4432), 2424 states have internal predecessors, (4432), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-28 01:54:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4482 transitions. [2021-12-28 01:54:34,917 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4482 transitions. Word has length 157 [2021-12-28 01:54:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:34,917 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4482 transitions. [2021-12-28 01:54:34,917 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4482 transitions. [2021-12-28 01:54:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:34,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:34,920 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, 1] [2021-12-28 01:54:34,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:54:34,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:34,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash -628278322, now seen corresponding path program 1 times [2021-12-28 01:54:34,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:34,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041009921] [2021-12-28 01:54:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:34,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:35,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:35,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041009921] [2021-12-28 01:54:35,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041009921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:35,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:35,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:35,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773560609] [2021-12-28 01:54:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:35,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:35,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:35,085 INFO L87 Difference]: Start difference. First operand 2455 states and 4482 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:37,628 INFO L93 Difference]: Finished difference Result 3362 states and 5958 transitions. [2021-12-28 01:54:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:37,629 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:37,639 INFO L225 Difference]: With dead ends: 3362 [2021-12-28 01:54:37,639 INFO L226 Difference]: Without dead ends: 3046 [2021-12-28 01:54:37,641 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 [2021-12-28 01:54:37,642 INFO L933 BasicCegarLoop]: 4852 mSDtfsCounter, 5234 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 22385 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:37,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5251 Valid, 22385 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2817 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-28 01:54:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-12-28 01:54:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2787. [2021-12-28 01:54:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2724 states have (on average 1.8050660792951543) internal successors, (4917), 2729 states have internal predecessors, (4917), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2021-12-28 01:54:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5016 transitions. [2021-12-28 01:54:37,701 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5016 transitions. Word has length 157 [2021-12-28 01:54:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:37,701 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 5016 transitions. [2021-12-28 01:54:37,702 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:37,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5016 transitions. [2021-12-28 01:54:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:37,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:37,704 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, 1] [2021-12-28 01:54:37,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:54:37,705 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash 770675280, now seen corresponding path program 1 times [2021-12-28 01:54:37,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:37,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21244065] [2021-12-28 01:54:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:37,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:37,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:37,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21244065] [2021-12-28 01:54:37,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21244065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:37,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:37,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:37,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21639782] [2021-12-28 01:54:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:37,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:37,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:37,863 INFO L87 Difference]: Start difference. First operand 2787 states and 5016 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:40,473 INFO L93 Difference]: Finished difference Result 4512 states and 7800 transitions. [2021-12-28 01:54:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:40,474 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:40,488 INFO L225 Difference]: With dead ends: 4512 [2021-12-28 01:54:40,488 INFO L226 Difference]: Without dead ends: 3866 [2021-12-28 01:54:40,491 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 [2021-12-28 01:54:40,492 INFO L933 BasicCegarLoop]: 4779 mSDtfsCounter, 5274 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 22237 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:40,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 22237 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-28 01:54:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-12-28 01:54:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3399. [2021-12-28 01:54:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3284 states have (on average 1.7649208282582216) internal successors, (5796), 3291 states have internal predecessors, (5796), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2021-12-28 01:54:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 5981 transitions. [2021-12-28 01:54:40,577 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 5981 transitions. Word has length 157 [2021-12-28 01:54:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:40,577 INFO L470 AbstractCegarLoop]: Abstraction has 3399 states and 5981 transitions. [2021-12-28 01:54:40,577 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 5981 transitions. [2021-12-28 01:54:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:40,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:40,580 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, 1] [2021-12-28 01:54:40,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:54:40,580 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash -846765170, now seen corresponding path program 1 times [2021-12-28 01:54:40,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996402799] [2021-12-28 01:54:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:40,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:40,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:40,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996402799] [2021-12-28 01:54:40,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996402799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:40,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:40,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:40,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15574022] [2021-12-28 01:54:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:40,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:40,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:40,690 INFO L87 Difference]: Start difference. First operand 3399 states and 5981 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:43,079 INFO L93 Difference]: Finished difference Result 6762 states and 11393 transitions. [2021-12-28 01:54:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:43,080 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:43,104 INFO L225 Difference]: With dead ends: 6762 [2021-12-28 01:54:43,105 INFO L226 Difference]: Without dead ends: 5504 [2021-12-28 01:54:43,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:54:43,119 INFO L933 BasicCegarLoop]: 4843 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22376 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:43,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22376 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 01:54:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2021-12-28 01:54:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 4625. [2021-12-28 01:54:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4406 states have (on average 1.7149341806627327) internal successors, (7556), 4417 states have internal predecessors, (7556), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2021-12-28 01:54:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 7919 transitions. [2021-12-28 01:54:43,315 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 7919 transitions. Word has length 157 [2021-12-28 01:54:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:43,316 INFO L470 AbstractCegarLoop]: Abstraction has 4625 states and 7919 transitions. [2021-12-28 01:54:43,316 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 7919 transitions. [2021-12-28 01:54:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:43,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:43,319 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, 1] [2021-12-28 01:54:43,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:54:43,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash -483298672, now seen corresponding path program 1 times [2021-12-28 01:54:43,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:43,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960121902] [2021-12-28 01:54:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:43,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:43,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:43,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960121902] [2021-12-28 01:54:43,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960121902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:43,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:43,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:43,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128034218] [2021-12-28 01:54:43,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:43,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:43,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:43,429 INFO L87 Difference]: Start difference. First operand 4625 states and 7919 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:45,563 INFO L93 Difference]: Finished difference Result 11260 states and 18593 transitions. [2021-12-28 01:54:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:45,564 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:45,605 INFO L225 Difference]: With dead ends: 11260 [2021-12-28 01:54:45,605 INFO L226 Difference]: Without dead ends: 8776 [2021-12-28 01:54:45,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:54:45,616 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22373 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:45,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22373 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:54:45,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2021-12-28 01:54:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7083. [2021-12-28 01:54:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 6656 states have (on average 1.6652644230769231) internal successors, (11084), 6675 states have internal predecessors, (11084), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2021-12-28 01:54:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 11821 transitions. [2021-12-28 01:54:46,008 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 11821 transitions. Word has length 157 [2021-12-28 01:54:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:46,008 INFO L470 AbstractCegarLoop]: Abstraction has 7083 states and 11821 transitions. [2021-12-28 01:54:46,009 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 11821 transitions. [2021-12-28 01:54:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:46,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:46,013 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, 1] [2021-12-28 01:54:46,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:54:46,013 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash -194479282, now seen corresponding path program 1 times [2021-12-28 01:54:46,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:46,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292116355] [2021-12-28 01:54:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:46,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:46,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:46,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292116355] [2021-12-28 01:54:46,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292116355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:46,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:46,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:46,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290818181] [2021-12-28 01:54:46,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:46,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:46,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:46,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:46,135 INFO L87 Difference]: Start difference. First operand 7083 states and 11821 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:49,054 INFO L93 Difference]: Finished difference Result 20254 states and 33049 transitions. [2021-12-28 01:54:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:49,055 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:49,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:49,097 INFO L225 Difference]: With dead ends: 20254 [2021-12-28 01:54:49,097 INFO L226 Difference]: Without dead ends: 15312 [2021-12-28 01:54:49,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:54:49,115 INFO L933 BasicCegarLoop]: 4837 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22370 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:49,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22370 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 01:54:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2021-12-28 01:54:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 12013. [2021-12-28 01:54:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12013 states, 11170 states have (on average 1.6257833482542525) internal successors, (18160), 11205 states have internal predecessors, (18160), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2021-12-28 01:54:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12013 states to 12013 states and 19699 transitions. [2021-12-28 01:54:49,577 INFO L78 Accepts]: Start accepts. Automaton has 12013 states and 19699 transitions. Word has length 157 [2021-12-28 01:54:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:49,577 INFO L470 AbstractCegarLoop]: Abstraction has 12013 states and 19699 transitions. [2021-12-28 01:54:49,577 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 12013 states and 19699 transitions. [2021-12-28 01:54:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:49,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:49,584 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, 1] [2021-12-28 01:54:49,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:54:49,584 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:49,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:49,585 INFO L85 PathProgramCache]: Analyzing trace with hash -739351856, now seen corresponding path program 1 times [2021-12-28 01:54:49,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:49,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444683579] [2021-12-28 01:54:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:49,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:49,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:49,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444683579] [2021-12-28 01:54:49,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444683579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:49,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:49,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:49,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076834661] [2021-12-28 01:54:49,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:49,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:49,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:49,689 INFO L87 Difference]: Start difference. First operand 12013 states and 19699 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:53,292 INFO L93 Difference]: Finished difference Result 38240 states and 62149 transitions. [2021-12-28 01:54:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:53,292 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:53,378 INFO L225 Difference]: With dead ends: 38240 [2021-12-28 01:54:53,379 INFO L226 Difference]: Without dead ends: 28368 [2021-12-28 01:54:53,415 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 [2021-12-28 01:54:53,415 INFO L933 BasicCegarLoop]: 4834 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22367 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:53,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 22367 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 01:54:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28368 states. [2021-12-28 01:54:54,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28368 to 21903. [2021-12-28 01:54:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5995649594621317) internal successors, (32356), 20295 states have internal predecessors, (32356), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-28 01:54:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35661 transitions. [2021-12-28 01:54:54,455 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35661 transitions. Word has length 157 [2021-12-28 01:54:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:54,455 INFO L470 AbstractCegarLoop]: Abstraction has 21903 states and 35661 transitions. [2021-12-28 01:54:54,455 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35661 transitions. [2021-12-28 01:54:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:54,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:54,467 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, 1] [2021-12-28 01:54:54,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:54:54,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:54,468 INFO L85 PathProgramCache]: Analyzing trace with hash -64191730, now seen corresponding path program 1 times [2021-12-28 01:54:54,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498618514] [2021-12-28 01:54:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:54,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:54,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:54,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498618514] [2021-12-28 01:54:54,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498618514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:54,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:54,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:54,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391190952] [2021-12-28 01:54:54,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:54,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:54,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:54,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:54,657 INFO L87 Difference]: Start difference. First operand 21903 states and 35661 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:56,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:56,852 INFO L93 Difference]: Finished difference Result 48585 states and 79664 transitions. [2021-12-28 01:54:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:54:56,852 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:54:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:57,016 INFO L225 Difference]: With dead ends: 48585 [2021-12-28 01:54:57,031 INFO L226 Difference]: Without dead ends: 28821 [2021-12-28 01:54:57,289 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 [2021-12-28 01:54:57,290 INFO L933 BasicCegarLoop]: 4508 mSDtfsCounter, 5073 mSDsluCounter, 12536 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 17044 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:57,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5091 Valid, 17044 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 01:54:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2021-12-28 01:54:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 21903. [2021-12-28 01:54:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5963515918528772) internal successors, (32291), 20295 states have internal predecessors, (32291), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2021-12-28 01:54:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35596 transitions. [2021-12-28 01:54:58,286 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35596 transitions. Word has length 157 [2021-12-28 01:54:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:58,287 INFO L470 AbstractCegarLoop]: Abstraction has 21903 states and 35596 transitions. [2021-12-28 01:54:58,287 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35596 transitions. [2021-12-28 01:54:58,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:54:58,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:58,298 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, 1] [2021-12-28 01:54:58,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:54:58,298 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1012243696, now seen corresponding path program 1 times [2021-12-28 01:54:58,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:58,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160062269] [2021-12-28 01:54:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:58,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:54:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:54:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:54:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:58,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:54:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:58,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160062269] [2021-12-28 01:54:58,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160062269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:58,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:58,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455733850] [2021-12-28 01:54:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:58,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:58,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:58,409 INFO L87 Difference]: Start difference. First operand 21903 states and 35596 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:55:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:55:03,626 INFO L93 Difference]: Finished difference Result 74083 states and 120373 transitions. [2021-12-28 01:55:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:55:03,626 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:55:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:55:03,795 INFO L225 Difference]: With dead ends: 74083 [2021-12-28 01:55:03,796 INFO L226 Difference]: Without dead ends: 54321 [2021-12-28 01:55:03,841 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 [2021-12-28 01:55:03,842 INFO L933 BasicCegarLoop]: 4818 mSDtfsCounter, 5261 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22351 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:55:03,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5278 Valid, 22351 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 01:55:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54321 states. [2021-12-28 01:55:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54321 to 41872. [2021-12-28 01:55:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41872 states, 38533 states have (on average 1.5805154023823735) internal successors, (60902), 38664 states have internal predecessors, (60902), 2441 states have call successors, (2441), 769 states have call predecessors, (2441), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2021-12-28 01:55:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41872 states to 41872 states and 68225 transitions. [2021-12-28 01:55:06,248 INFO L78 Accepts]: Start accepts. Automaton has 41872 states and 68225 transitions. Word has length 157 [2021-12-28 01:55:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:55:06,249 INFO L470 AbstractCegarLoop]: Abstraction has 41872 states and 68225 transitions. [2021-12-28 01:55:06,249 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:55:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 41872 states and 68225 transitions. [2021-12-28 01:55:06,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:55:06,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:55:06,269 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, 1] [2021-12-28 01:55:06,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:55:06,269 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:55:06,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:55:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1446749294, now seen corresponding path program 1 times [2021-12-28 01:55:06,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:55:06,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299442990] [2021-12-28 01:55:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:55:06,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:55:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:55:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:55:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:55:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:55:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:06,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:55:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:55:06,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:55:06,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299442990] [2021-12-28 01:55:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299442990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:55:06,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:55:06,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:55:06,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738825347] [2021-12-28 01:55:06,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:55:06,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:55:06,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:55:06,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:55:06,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:55:06,395 INFO L87 Difference]: Start difference. First operand 41872 states and 68225 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:55:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:55:14,851 INFO L93 Difference]: Finished difference Result 146022 states and 239430 transitions. [2021-12-28 01:55:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:55:14,852 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2021-12-28 01:55:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:55:15,234 INFO L225 Difference]: With dead ends: 146022 [2021-12-28 01:55:15,235 INFO L226 Difference]: Without dead ends: 106291 [2021-12-28 01:55:15,341 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 [2021-12-28 01:55:15,342 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 5287 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 22220 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:55:15,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5304 Valid, 22220 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 01:55:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2021-12-28 01:55:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 81938. [2021-12-28 01:55:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81938 states, 75271 states have (on average 1.57186698728594) internal successors, (118316), 75530 states have internal predecessors, (118316), 4873 states have call successors, (4873), 1537 states have call predecessors, (4873), 1792 states have return successors, (11944), 5126 states have call predecessors, (11944), 4871 states have call successors, (11944) [2021-12-28 01:55:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81938 states to 81938 states and 135133 transitions. [2021-12-28 01:55:20,732 INFO L78 Accepts]: Start accepts. Automaton has 81938 states and 135133 transitions. Word has length 157 [2021-12-28 01:55:20,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:55:20,733 INFO L470 AbstractCegarLoop]: Abstraction has 81938 states and 135133 transitions. [2021-12-28 01:55:20,733 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:55:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 81938 states and 135133 transitions. [2021-12-28 01:55:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:55:20,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:55:20,764 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, 1] [2021-12-28 01:55:20,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:55:20,765 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:55:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:55:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1876407600, now seen corresponding path program 1 times [2021-12-28 01:55:20,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:55:20,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002152933] [2021-12-28 01:55:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:55:20,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:55:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:55:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 01:55:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 01:55:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 01:55:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:21,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 01:55:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:55:21,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:55:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002152933] [2021-12-28 01:55:21,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002152933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:55:21,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:55:21,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:55:21,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228508340] [2021-12-28 01:55:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:55:21,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:55:21,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:55:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:55:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:55:21,032 INFO L87 Difference]: Start difference. First operand 81938 states and 135133 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)