./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_label45+token_ring.15.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f6b3df944a21b7c8707e83029bbb1a58d3af14f3c6a747de4c932a385afddd0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:38:35,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:38:35,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:38:35,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:38:35,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:38:35,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:38:35,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:38:35,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:38:35,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:38:35,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:38:35,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:38:35,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:38:35,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:38:35,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:38:35,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:38:35,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:38:35,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:38:35,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:38:35,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:38:35,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:38:35,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:38:35,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:38:35,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:38:35,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:38:35,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:38:35,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:38:35,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:38:35,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:38:35,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:38:35,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:38:35,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:38:35,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:38:35,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:38:35,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:38:35,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:38:35,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:38:35,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:38:35,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:38:35,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:38:35,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:38:35,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:38:35,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:38:35,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:38:35,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:38:35,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:38:35,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:38:35,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:38:35,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:38:35,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:38:35,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:38:35,261 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:38:35,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:38:35,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:38:35,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:38:35,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:38:35,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:38:35,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:38:35,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:38:35,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:38:35,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:38:35,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:38:35,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:38:35,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:38:35,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:38:35,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:38:35,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:38:35,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:38:35,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:38:35,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:38:35,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:38:35,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:38:35,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:38:35,265 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:38:35,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:38:35,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:38:35,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:38:35,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f6b3df944a21b7c8707e83029bbb1a58d3af14f3c6a747de4c932a385afddd0 [2021-12-22 12:38:35,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:38:35,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:38:35,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:38:35,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:38:35,505 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:38:35,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.15.cil.c [2021-12-22 12:38:35,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2eb42f49/7f41ab19a634470587c950b0a0d148fa/FLAG8c1394240 [2021-12-22 12:38:36,192 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:38:36,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.15.cil.c [2021-12-22 12:38:36,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2eb42f49/7f41ab19a634470587c950b0a0d148fa/FLAG8c1394240 [2021-12-22 12:38:36,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2eb42f49/7f41ab19a634470587c950b0a0d148fa [2021-12-22 12:38:36,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:38:36,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:38:36,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:38:36,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:38:36,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:38:36,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:38:36" (1/1) ... [2021-12-22 12:38:36,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3204deed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:36, skipping insertion in model container [2021-12-22 12:38:36,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:38:36" (1/1) ... [2021-12-22 12:38:36,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:38:36,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:38:37,898 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_label45+token_ring.15.cil.c[380323,380336] [2021-12-22 12:38:37,921 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_label45+token_ring.15.cil.c[383339,383352] [2021-12-22 12:38:38,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:38:38,132 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:38:38,703 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_label45+token_ring.15.cil.c[380323,380336] [2021-12-22 12:38:38,710 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_label45+token_ring.15.cil.c[383339,383352] [2021-12-22 12:38:38,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:38:38,786 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:38:38,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38 WrapperNode [2021-12-22 12:38:38,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:38:38,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:38:38,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:38:38,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:38:38,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:38,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,194 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2021-12-22 12:38:39,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:38:39,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:38:39,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:38:39,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:38:39,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:38:39,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:38:39,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:38:39,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:38:39,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:38:39,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:38:39,689 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) [2021-12-22 12:38:39,759 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 [2021-12-22 12:38:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:38:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:38:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:38:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:38:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:38:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:38:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:38:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-22 12:38:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-22 12:38:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:38:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:38:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:38:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:38:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:38:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:38:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:38:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:38:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:38:39,966 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:38:39,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:38:44,840 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:38:44,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:38:44,856 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-22 12:38:44,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:38:44 BoogieIcfgContainer [2021-12-22 12:38:44,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:38:44,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:38:44,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:38:44,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:38:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:38:36" (1/3) ... [2021-12-22 12:38:44,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713b7426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:38:44, skipping insertion in model container [2021-12-22 12:38:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (2/3) ... [2021-12-22 12:38:44,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713b7426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:38:44, skipping insertion in model container [2021-12-22 12:38:44,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:38:44" (3/3) ... [2021-12-22 12:38:44,866 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.15.cil.c [2021-12-22 12:38:44,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:38:44,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:38:44,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:38:44,911 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 [2021-12-22 12:38:44,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:38:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-22 12:38:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:38:44,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:44,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:44,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-12-22 12:38:44,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:44,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101558170] [2021-12-22 12:38:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:44,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:38:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:38:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:38:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:38:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:45,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:45,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101558170] [2021-12-22 12:38:45,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101558170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:45,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:45,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:38:45,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440858678] [2021-12-22 12:38:45,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:45,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:38:45,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:45,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:38:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:38:45,437 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-22 12:38:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:46,950 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2021-12-22 12:38:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:38:46,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2021-12-22 12:38:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:46,968 INFO L225 Difference]: With dead ends: 5336 [2021-12-22 12:38:46,969 INFO L226 Difference]: Without dead ends: 2681 [2021-12-22 12:38:46,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:38:46,977 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 1117 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:46,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 17259 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:38:46,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-22 12:38:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-22 12:38:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-22 12:38:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2021-12-22 12:38:47,070 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2021-12-22 12:38:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:47,071 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2021-12-22 12:38:47,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-22 12:38:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2021-12-22 12:38:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:38:47,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:47,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:47,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:38:47,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:47,075 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2021-12-22 12:38:47,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:47,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216770272] [2021-12-22 12:38:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:47,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:47,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:38:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:38:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:38:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:38:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:47,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216770272] [2021-12-22 12:38:47,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216770272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:47,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:47,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:38:47,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665079144] [2021-12-22 12:38:47,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:47,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:38:47,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:38:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:38:47,331 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-22 12:38:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:48,650 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2021-12-22 12:38:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:38:48,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2021-12-22 12:38:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:48,658 INFO L225 Difference]: With dead ends: 3071 [2021-12-22 12:38:48,658 INFO L226 Difference]: Without dead ends: 2681 [2021-12-22 12:38:48,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:38:48,660 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 1103 mSDsluCounter, 12319 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 16986 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:48,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 16986 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:38:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-22 12:38:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-22 12:38:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-22 12:38:48,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2021-12-22 12:38:48,711 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2021-12-22 12:38:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:48,711 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2021-12-22 12:38:48,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-22 12:38:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2021-12-22 12:38:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:38:48,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:48,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:48,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:38:48,714 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:48,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:48,714 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2021-12-22 12:38:48,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:48,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802495597] [2021-12-22 12:38:48,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:48,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:38:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:38:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:38:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:38:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:48,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:48,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802495597] [2021-12-22 12:38:48,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802495597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:48,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:48,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:38:48,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869081115] [2021-12-22 12:38:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:48,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:38:48,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:38:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:38:48,853 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-22 12:38:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:51,417 INFO L93 Difference]: Finished difference Result 3626 states and 6383 transitions. [2021-12-22 12:38:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:38:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2021-12-22 12:38:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:51,447 INFO L225 Difference]: With dead ends: 3626 [2021-12-22 12:38:51,448 INFO L226 Difference]: Without dead ends: 3240 [2021-12-22 12:38:51,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:38:51,472 INFO L933 BasicCegarLoop]: 4723 mSDtfsCounter, 5636 mSDsluCounter, 12966 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 17689 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:51,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5656 Valid, 17689 Invalid, 2227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 12:38:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-12-22 12:38:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2933. [2021-12-22 12:38:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2867 states have (on average 1.795256365538891) internal successors, (5147), 2871 states have internal predecessors, (5147), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-22 12:38:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 5250 transitions. [2021-12-22 12:38:51,653 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 5250 transitions. Word has length 190 [2021-12-22 12:38:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:51,653 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 5250 transitions. [2021-12-22 12:38:51,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-22 12:38:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 5250 transitions. [2021-12-22 12:38:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:38:51,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:51,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:51,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:38:51,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1773060918, now seen corresponding path program 1 times [2021-12-22 12:38:51,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:51,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616732358] [2021-12-22 12:38:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:51,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:38:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:51,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:38:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:38:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:38:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:51,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:51,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616732358] [2021-12-22 12:38:51,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616732358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:51,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:51,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:38:51,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194891281] [2021-12-22 12:38:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:51,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:38:51,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:38:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:38:51,844 INFO L87 Difference]: Start difference. First operand 2933 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:38:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:55,211 INFO L93 Difference]: Finished difference Result 4610 states and 7978 transitions. [2021-12-22 12:38:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:38:55,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:38:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:55,226 INFO L225 Difference]: With dead ends: 4610 [2021-12-22 12:38:55,227 INFO L226 Difference]: Without dead ends: 3819 [2021-12-22 12:38:55,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:38:55,231 INFO L933 BasicCegarLoop]: 5052 mSDtfsCounter, 5672 mSDsluCounter, 17946 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5692 SdHoareTripleChecker+Valid, 22998 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:55,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5692 Valid, 22998 Invalid, 3382 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 12:38:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2021-12-22 12:38:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3309. [2021-12-22 12:38:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3214 states have (on average 1.7710018668326073) internal successors, (5692), 3219 states have internal predecessors, (5692), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-22 12:38:55,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 5841 transitions. [2021-12-22 12:38:55,361 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 5841 transitions. Word has length 190 [2021-12-22 12:38:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:55,361 INFO L470 AbstractCegarLoop]: Abstraction has 3309 states and 5841 transitions. [2021-12-22 12:38:55,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:38:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 5841 transitions. [2021-12-22 12:38:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:38:55,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:55,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:55,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:38:55,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:55,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:55,365 INFO L85 PathProgramCache]: Analyzing trace with hash -150189512, now seen corresponding path program 1 times [2021-12-22 12:38:55,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:55,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610559063] [2021-12-22 12:38:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:55,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:38:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:38:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:38:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:55,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:38:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:55,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610559063] [2021-12-22 12:38:55,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610559063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:55,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:55,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:38:55,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821836191] [2021-12-22 12:38:55,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:55,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:38:55,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:55,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:38:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:38:55,524 INFO L87 Difference]: Start difference. First operand 3309 states and 5841 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:38:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:59,316 INFO L93 Difference]: Finished difference Result 6060 states and 10309 transitions. [2021-12-22 12:38:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:38:59,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:38:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:59,338 INFO L225 Difference]: With dead ends: 6060 [2021-12-22 12:38:59,338 INFO L226 Difference]: Without dead ends: 4893 [2021-12-22 12:38:59,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:38:59,346 INFO L933 BasicCegarLoop]: 5040 mSDtfsCounter, 5666 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3289 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5686 SdHoareTripleChecker+Valid, 22982 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:59,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5686 Valid, 22982 Invalid, 3377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3289 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 12:38:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2021-12-22 12:38:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4065. [2021-12-22 12:38:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 3912 states have (on average 1.7354294478527608) internal successors, (6789), 3919 states have internal predecessors, (6789), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-22 12:38:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 7034 transitions. [2021-12-22 12:38:59,553 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 7034 transitions. Word has length 190 [2021-12-22 12:38:59,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:59,554 INFO L470 AbstractCegarLoop]: Abstraction has 4065 states and 7034 transitions. [2021-12-22 12:38:59,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:38:59,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 7034 transitions. [2021-12-22 12:38:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:38:59,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:59,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:59,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:38:59,558 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash 348367290, now seen corresponding path program 1 times [2021-12-22 12:38:59,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:59,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110758575] [2021-12-22 12:38:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:59,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:38:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:59,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:38:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:38:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:38:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:59,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:59,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110758575] [2021-12-22 12:38:59,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110758575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:59,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:59,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:38:59,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871644582] [2021-12-22 12:38:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:59,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:38:59,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:59,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:38:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:38:59,729 INFO L87 Difference]: Start difference. First operand 4065 states and 7034 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:02,667 INFO L93 Difference]: Finished difference Result 8854 states and 14770 transitions. [2021-12-22 12:39:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:02,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:39:02,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:02,699 INFO L225 Difference]: With dead ends: 8854 [2021-12-22 12:39:02,699 INFO L226 Difference]: Without dead ends: 6931 [2021-12-22 12:39:02,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:02,710 INFO L933 BasicCegarLoop]: 5035 mSDtfsCounter, 5665 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5685 SdHoareTripleChecker+Valid, 22977 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:02,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5685 Valid, 22977 Invalid, 3369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 12:39:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2021-12-22 12:39:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 5578. [2021-12-22 12:39:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5309 states have (on average 1.6920323978150311) internal successors, (8983), 5320 states have internal predecessors, (8983), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-22 12:39:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 9426 transitions. [2021-12-22 12:39:02,942 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 9426 transitions. Word has length 190 [2021-12-22 12:39:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:02,942 INFO L470 AbstractCegarLoop]: Abstraction has 5578 states and 9426 transitions. [2021-12-22 12:39:02,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 9426 transitions. [2021-12-22 12:39:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:39:02,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:02,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:02,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:39:02,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash 918639096, now seen corresponding path program 1 times [2021-12-22 12:39:02,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:02,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476265581] [2021-12-22 12:39:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:02,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:39:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:39:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:39:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:39:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:03,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:03,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476265581] [2021-12-22 12:39:03,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476265581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:03,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:03,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:03,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752229866] [2021-12-22 12:39:03,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:03,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:03,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:03,112 INFO L87 Difference]: Start difference. First operand 5578 states and 9426 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:06,480 INFO L93 Difference]: Finished difference Result 14441 states and 23708 transitions. [2021-12-22 12:39:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:06,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:39:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:06,527 INFO L225 Difference]: With dead ends: 14441 [2021-12-22 12:39:06,527 INFO L226 Difference]: Without dead ends: 11005 [2021-12-22 12:39:06,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:06,541 INFO L933 BasicCegarLoop]: 5030 mSDtfsCounter, 5664 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5684 SdHoareTripleChecker+Valid, 22972 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:06,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5684 Valid, 22972 Invalid, 3361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:39:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11005 states. [2021-12-22 12:39:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11005 to 8611. [2021-12-22 12:39:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8611 states, 8110 states have (on average 1.6499383477188656) internal successors, (13381), 8129 states have internal predecessors, (13381), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-22 12:39:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8611 states to 8611 states and 14238 transitions. [2021-12-22 12:39:06,951 INFO L78 Accepts]: Start accepts. Automaton has 8611 states and 14238 transitions. Word has length 190 [2021-12-22 12:39:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:06,952 INFO L470 AbstractCegarLoop]: Abstraction has 8611 states and 14238 transitions. [2021-12-22 12:39:06,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8611 states and 14238 transitions. [2021-12-22 12:39:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:39:06,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:06,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:06,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:39:06,957 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1972459014, now seen corresponding path program 1 times [2021-12-22 12:39:06,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:06,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428989753] [2021-12-22 12:39:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:06,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:39:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:39:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:39:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:39:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:07,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:07,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428989753] [2021-12-22 12:39:07,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428989753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:07,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:07,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262423515] [2021-12-22 12:39:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:07,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:07,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:07,115 INFO L87 Difference]: Start difference. First operand 8611 states and 14238 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:11,025 INFO L93 Difference]: Finished difference Result 25616 states and 41646 transitions. [2021-12-22 12:39:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:39:11,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:11,075 INFO L225 Difference]: With dead ends: 25616 [2021-12-22 12:39:11,075 INFO L226 Difference]: Without dead ends: 19147 [2021-12-22 12:39:11,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:11,097 INFO L933 BasicCegarLoop]: 4758 mSDtfsCounter, 5775 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5795 SdHoareTripleChecker+Valid, 21993 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:11,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5795 Valid, 21993 Invalid, 3031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:39:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2021-12-22 12:39:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 14692. [2021-12-22 12:39:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14692 states, 13727 states have (on average 1.6171778247249946) internal successors, (22199), 13762 states have internal predecessors, (22199), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-22 12:39:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14692 states to 14692 states and 23938 transitions. [2021-12-22 12:39:11,877 INFO L78 Accepts]: Start accepts. Automaton has 14692 states and 23938 transitions. Word has length 190 [2021-12-22 12:39:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:11,877 INFO L470 AbstractCegarLoop]: Abstraction has 14692 states and 23938 transitions. [2021-12-22 12:39:11,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:11,878 INFO L276 IsEmpty]: Start isEmpty. Operand 14692 states and 23938 transitions. [2021-12-22 12:39:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:39:11,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:11,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:11,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:39:11,885 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1536510392, now seen corresponding path program 1 times [2021-12-22 12:39:11,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:11,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54964859] [2021-12-22 12:39:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:11,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:39:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:39:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:39:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:39:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:12,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:12,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54964859] [2021-12-22 12:39:12,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54964859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:12,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:12,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:12,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737306659] [2021-12-22 12:39:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:12,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:12,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:12,042 INFO L87 Difference]: Start difference. First operand 14692 states and 23938 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:14,572 INFO L93 Difference]: Finished difference Result 31976 states and 52109 transitions. [2021-12-22 12:39:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:39:14,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:39:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:14,618 INFO L225 Difference]: With dead ends: 31976 [2021-12-22 12:39:14,618 INFO L226 Difference]: Without dead ends: 19426 [2021-12-22 12:39:14,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:39:14,651 INFO L933 BasicCegarLoop]: 4645 mSDtfsCounter, 5350 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5371 SdHoareTripleChecker+Valid, 17321 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:14,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5371 Valid, 17321 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:39:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19426 states. [2021-12-22 12:39:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19426 to 14692. [2021-12-22 12:39:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14692 states, 13727 states have (on average 1.6147738034530488) internal successors, (22166), 13762 states have internal predecessors, (22166), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-22 12:39:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14692 states to 14692 states and 23905 transitions. [2021-12-22 12:39:15,587 INFO L78 Accepts]: Start accepts. Automaton has 14692 states and 23905 transitions. Word has length 190 [2021-12-22 12:39:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:15,588 INFO L470 AbstractCegarLoop]: Abstraction has 14692 states and 23905 transitions. [2021-12-22 12:39:15,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 14692 states and 23905 transitions. [2021-12-22 12:39:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:39:15,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:15,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:15,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:39:15,598 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:15,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2091075014, now seen corresponding path program 1 times [2021-12-22 12:39:15,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:15,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30258827] [2021-12-22 12:39:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:15,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:39:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:39:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:39:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:39:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:15,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30258827] [2021-12-22 12:39:15,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30258827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:15,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:15,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:15,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625317565] [2021-12-22 12:39:15,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:15,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:15,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:15,758 INFO L87 Difference]: Start difference. First operand 14692 states and 23905 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:21,388 INFO L93 Difference]: Finished difference Result 47933 states and 77484 transitions. [2021-12-22 12:39:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:21,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:39:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:21,487 INFO L225 Difference]: With dead ends: 47933 [2021-12-22 12:39:21,488 INFO L226 Difference]: Without dead ends: 35383 [2021-12-22 12:39:21,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:21,519 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 5655 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22956 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:21,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 22956 Invalid, 3326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 12:39:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35383 states. [2021-12-22 12:39:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35383 to 26918. [2021-12-22 12:39:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26918 states, 25025 states have (on average 1.5924075924075924) internal successors, (39850), 25092 states have internal predecessors, (39850), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2021-12-22 12:39:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26918 states to 26918 states and 43515 transitions. [2021-12-22 12:39:23,361 INFO L78 Accepts]: Start accepts. Automaton has 26918 states and 43515 transitions. Word has length 190 [2021-12-22 12:39:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:23,362 INFO L470 AbstractCegarLoop]: Abstraction has 26918 states and 43515 transitions. [2021-12-22 12:39:23,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:23,362 INFO L276 IsEmpty]: Start isEmpty. Operand 26918 states and 43515 transitions. [2021-12-22 12:39:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:39:23,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:23,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:23,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:39:23,377 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash 8663416, now seen corresponding path program 1 times [2021-12-22 12:39:23,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:23,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474713325] [2021-12-22 12:39:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:23,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:39:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:39:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:39:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:39:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:23,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:23,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474713325] [2021-12-22 12:39:23,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474713325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:23,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:23,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:23,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432341965] [2021-12-22 12:39:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:23,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:23,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:23,499 INFO L87 Difference]: Start difference. First operand 26918 states and 43515 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:31,932 INFO L93 Difference]: Finished difference Result 92637 states and 150036 transitions. [2021-12-22 12:39:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-22 12:39:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:32,262 INFO L225 Difference]: With dead ends: 92637 [2021-12-22 12:39:32,262 INFO L226 Difference]: Without dead ends: 67861 [2021-12-22 12:39:32,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:32,328 INFO L933 BasicCegarLoop]: 5007 mSDtfsCounter, 5657 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5677 SdHoareTripleChecker+Valid, 22949 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:32,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5677 Valid, 22949 Invalid, 3318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:39:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67861 states. [2021-12-22 12:39:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67861 to 51431. [2021-12-22 12:39:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51431 states, 47682 states have (on average 1.57938005956126) internal successors, (75308), 47813 states have internal predecessors, (75308), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2021-12-22 12:39:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51431 states to 51431 states and 83311 transitions. [2021-12-22 12:39:36,242 INFO L78 Accepts]: Start accepts. Automaton has 51431 states and 83311 transitions. Word has length 190 [2021-12-22 12:39:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:36,243 INFO L470 AbstractCegarLoop]: Abstraction has 51431 states and 83311 transitions. [2021-12-22 12:39:36,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-22 12:39:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand 51431 states and 83311 transitions. [2021-12-22 12:39:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 12:39:36,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:36,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:36,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:39:36,268 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 353491578, now seen corresponding path program 1 times [2021-12-22 12:39:36,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130587059] [2021-12-22 12:39:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:36,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:39:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:39:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:39:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:39:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:36,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:36,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130587059] [2021-12-22 12:39:36,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130587059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:36,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:36,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:36,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043924191] [2021-12-22 12:39:36,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:36,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:36,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:36,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:36,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:36,392 INFO L87 Difference]: Start difference. First operand 51431 states and 83311 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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)