./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_label46+token_ring.09.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4193af75abf6aff12bf0c3b1d52895798f02d5d81afc60ee7b84e09fa25d7f81 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:40:34,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:40:34,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:40:34,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:40:34,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:40:34,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:40:34,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:40:34,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:40:34,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:40:34,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:40:34,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:40:34,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:40:34,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:40:34,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:40:34,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:40:34,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:40:34,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:40:34,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:40:34,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:40:34,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:40:34,095 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:40:34,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:40:34,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:40:34,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:40:34,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:40:34,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:40:34,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:40:34,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:40:34,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:40:34,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:40:34,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:40:34,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:40:34,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:40:34,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:40:34,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:40:34,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:40:34,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:40:34,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:40:34,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:40:34,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:40:34,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:40:34,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:40:34,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:40:34,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:40:34,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:40:34,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:40:34,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:40:34,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:40:34,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:40:34,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:40:34,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:40:34,143 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:40:34,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:40:34,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:40:34,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:40:34,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:40:34,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:40:34,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:40:34,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:40:34,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:40:34,145 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:40:34,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:40:34,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:40:34,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:40:34,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:40:34,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:40:34,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:40:34,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:40:34,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:40:34,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:40:34,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:40:34,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:40:34,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:40:34,147 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:40:34,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:40:34,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:40:34,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4193af75abf6aff12bf0c3b1d52895798f02d5d81afc60ee7b84e09fa25d7f81 [2022-07-22 19:40:34,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:40:34,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:40:34,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:40:34,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:40:34,348 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:40:34,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-2.c [2022-07-22 19:40:34,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021811738/d3ce1afdee97438589e7c06e2ddf675c/FLAGc52fc4b57 [2022-07-22 19:40:35,026 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:40:35,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-2.c [2022-07-22 19:40:35,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021811738/d3ce1afdee97438589e7c06e2ddf675c/FLAGc52fc4b57 [2022-07-22 19:40:35,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/021811738/d3ce1afdee97438589e7c06e2ddf675c [2022-07-22 19:40:35,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:40:35,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:40:35,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:40:35,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:40:35,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:40:35,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:40:35" (1/1) ... [2022-07-22 19:40:35,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6165cfad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:35, skipping insertion in model container [2022-07-22 19:40:35,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:40:35" (1/1) ... [2022-07-22 19:40:35,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:40:35,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:40:36,442 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_label46+token_ring.09.cil-2.c[382357,382370] [2022-07-22 19:40:36,459 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_label46+token_ring.09.cil-2.c[383339,383352] [2022-07-22 19:40:36,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:40:36,636 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:40:37,221 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_label46+token_ring.09.cil-2.c[382357,382370] [2022-07-22 19:40:37,224 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_label46+token_ring.09.cil-2.c[383339,383352] [2022-07-22 19:40:37,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:40:37,287 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:40:37,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37 WrapperNode [2022-07-22 19:40:37,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:40:37,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:40:37,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:40:37,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:40:37,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,602 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-07-22 19:40:37,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:40:37,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:40:37,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:40:37,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:40:37,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:37,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:38,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:40:38,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:40:38,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:40:38,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:40:38,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (1/1) ... [2022-07-22 19:40:38,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:40:38,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:38,129 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) [2022-07-22 19:40:38,183 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 [2022-07-22 19:40:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:40:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:40:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:40:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:40:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:40:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:40:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:40:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:40:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:40:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:40:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:40:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:40:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:40:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:40:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:40:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:40:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:40:38,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:40:38,373 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:40:38,388 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:40:43,057 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:40:43,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:40:43,076 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-22 19:40:43,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:40:43 BoogieIcfgContainer [2022-07-22 19:40:43,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:40:43,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:40:43,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:40:43,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:40:43,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:40:35" (1/3) ... [2022-07-22 19:40:43,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77845974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:40:43, skipping insertion in model container [2022-07-22 19:40:43,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:37" (2/3) ... [2022-07-22 19:40:43,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77845974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:40:43, skipping insertion in model container [2022-07-22 19:40:43,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:40:43" (3/3) ... [2022-07-22 19:40:43,087 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.09.cil-2.c [2022-07-22 19:40:43,098 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:40:43,100 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:40:43,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:40:43,180 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c5aac09, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25603086 [2022-07-22 19:40:43,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:40:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 19:40:43,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:43,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:43,211 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:40:43,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:43,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:43,215 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-07-22 19:40:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:43,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61379437] [2022-07-22 19:40:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:43,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:43,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:40:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:40:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:40:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:43,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61379437] [2022-07-22 19:40:43,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61379437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:43,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:43,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:40:43,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358367252] [2022-07-22 19:40:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:40:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:43,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:40:43,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:40:43,602 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2022-07-22 19:40:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:44,603 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-07-22 19:40:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:40:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2022-07-22 19:40:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:44,633 INFO L225 Difference]: With dead ends: 5096 [2022-07-22 19:40:44,634 INFO L226 Difference]: Without dead ends: 2539 [2022-07-22 19:40:44,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:44,646 INFO L413 NwaCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16962 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:44,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 16962 Invalid, 622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:40:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-07-22 19:40:44,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-07-22 19:40:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 19:40:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-07-22 19:40:44,736 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-07-22 19:40:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:44,737 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-07-22 19:40:44,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2022-07-22 19:40:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-07-22 19:40:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:44,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:44,741 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:40:44,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:40:44,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-07-22 19:40:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:44,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266471459] [2022-07-22 19:40:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:44,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:44,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:40:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:40:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:40:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:44,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:44,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266471459] [2022-07-22 19:40:44,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266471459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:44,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:44,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:40:44,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699767323] [2022-07-22 19:40:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:44,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:40:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:40:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:40:44,885 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-22 19:40:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:46,742 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-07-22 19:40:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:40:46,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 146 [2022-07-22 19:40:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:46,757 INFO L225 Difference]: With dead ends: 3244 [2022-07-22 19:40:46,757 INFO L226 Difference]: Without dead ends: 2952 [2022-07-22 19:40:46,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:40:46,760 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:46,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 17195 Invalid, 1693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:40:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-22 19:40:46,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-07-22 19:40:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-22 19:40:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-07-22 19:40:46,824 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-07-22 19:40:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:46,825 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-07-22 19:40:46,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-22 19:40:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-07-22 19:40:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:46,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:46,827 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:40:46,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:40:46,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-07-22 19:40:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:46,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560193085] [2022-07-22 19:40:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:46,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:40:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:40:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:40:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:46,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:46,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560193085] [2022-07-22 19:40:46,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560193085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:46,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:46,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192471670] [2022-07-22 19:40:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:46,937 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:49,151 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-07-22 19:40:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:40:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:40:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:49,162 INFO L225 Difference]: With dead ends: 3972 [2022-07-22 19:40:49,163 INFO L226 Difference]: Without dead ends: 3377 [2022-07-22 19:40:49,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:40:49,170 INFO L413 NwaCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22176 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:49,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 22176 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 19:40:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-07-22 19:40:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-07-22 19:40:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-22 19:40:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-07-22 19:40:49,244 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-07-22 19:40:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:49,245 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-07-22 19:40:49,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-07-22 19:40:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:49,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:49,247 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:40:49,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:40:49,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:49,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-07-22 19:40:49,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:49,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696639224] [2022-07-22 19:40:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:49,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:40:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:40:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:40:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:49,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696639224] [2022-07-22 19:40:49,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696639224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:49,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:49,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88002753] [2022-07-22 19:40:49,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:49,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:49,372 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:51,490 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-07-22 19:40:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:40:51,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:40:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:51,507 INFO L225 Difference]: With dead ends: 5044 [2022-07-22 19:40:51,510 INFO L226 Difference]: Without dead ends: 4167 [2022-07-22 19:40:51,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:40:51,521 INFO L413 NwaCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22164 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:51,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 22164 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 19:40:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-07-22 19:40:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-07-22 19:40:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-22 19:40:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-07-22 19:40:51,692 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-07-22 19:40:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:51,696 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-07-22 19:40:51,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:51,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-07-22 19:40:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:51,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:51,699 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:40:51,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:40:51,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-07-22 19:40:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:51,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536852880] [2022-07-22 19:40:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:51,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:51,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:51,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:40:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:40:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:40:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:51,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536852880] [2022-07-22 19:40:51,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536852880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:51,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:51,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:51,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432545634] [2022-07-22 19:40:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:51,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:51,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:51,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:51,809 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:53,998 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-07-22 19:40:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:40:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:40:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:54,027 INFO L225 Difference]: With dead ends: 7114 [2022-07-22 19:40:54,027 INFO L226 Difference]: Without dead ends: 5669 [2022-07-22 19:40:54,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:40:54,033 INFO L413 NwaCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:54,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5210 Valid, 22159 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 19:40:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-07-22 19:40:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-07-22 19:40:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-22 19:40:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-07-22 19:40:54,185 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-07-22 19:40:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:54,186 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-07-22 19:40:54,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-07-22 19:40:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:54,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:54,189 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:40:54,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:40:54,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-07-22 19:40:54,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:54,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195472856] [2022-07-22 19:40:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:54,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:40:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:54,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:40:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:40:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:54,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195472856] [2022-07-22 19:40:54,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195472856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:54,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:54,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992003480] [2022-07-22 19:40:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:54,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:54,376 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:56,746 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-07-22 19:40:56,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:40:56,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:40:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:56,788 INFO L225 Difference]: With dead ends: 11253 [2022-07-22 19:40:56,788 INFO L226 Difference]: Without dead ends: 8671 [2022-07-22 19:40:56,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:40:56,801 INFO L413 NwaCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:56,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5209 Valid, 22154 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:40:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-07-22 19:40:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-07-22 19:40:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-22 19:40:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-07-22 19:40:57,061 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-07-22 19:40:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:57,062 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-07-22 19:40:57,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:57,062 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-07-22 19:40:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:57,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:57,066 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:40:57,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:40:57,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:57,069 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-07-22 19:40:57,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:57,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350519961] [2022-07-22 19:40:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:57,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:57,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:40:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:40:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:57,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:40:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:57,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350519961] [2022-07-22 19:40:57,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350519961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:57,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:57,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858569365] [2022-07-22 19:40:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:57,200 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:40:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:59,586 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-07-22 19:40:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:40:59,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:40:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:59,627 INFO L225 Difference]: With dead ends: 19532 [2022-07-22 19:40:59,627 INFO L226 Difference]: Without dead ends: 14669 [2022-07-22 19:40:59,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:40:59,645 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21414 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:59,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 21414 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:40:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-22 19:41:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-07-22 19:41:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 19:41:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-07-22 19:41:00,090 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-07-22 19:41:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:00,090 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-07-22 19:41:00,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-07-22 19:41:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:41:00,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:00,099 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:41:00,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:41:00,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-07-22 19:41:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:00,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51752193] [2022-07-22 19:41:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:00,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:41:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:41:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:41:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:41:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:00,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:00,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51752193] [2022-07-22 19:41:00,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51752193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:00,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:00,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513874510] [2022-07-22 19:41:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:00,254 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:01,732 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-07-22 19:41:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:41:01,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:41:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:01,777 INFO L225 Difference]: With dead ends: 24276 [2022-07-22 19:41:01,778 INFO L226 Difference]: Without dead ends: 14836 [2022-07-22 19:41:01,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:41:01,808 INFO L413 NwaCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:01,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4996 Valid, 16943 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:41:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-07-22 19:41:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-07-22 19:41:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 19:41:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-07-22 19:41:02,356 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-07-22 19:41:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:02,356 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-07-22 19:41:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-07-22 19:41:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:41:02,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:02,362 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:41:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:41:02,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-07-22 19:41:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:02,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559546894] [2022-07-22 19:41:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:02,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:41:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:41:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:41:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:41:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:02,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:02,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559546894] [2022-07-22 19:41:02,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559546894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:02,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:02,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938755040] [2022-07-22 19:41:02,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:02,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:02,462 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:05,688 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-07-22 19:41:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:41:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:05,762 INFO L225 Difference]: With dead ends: 36057 [2022-07-22 19:41:05,762 INFO L226 Difference]: Without dead ends: 26617 [2022-07-22 19:41:05,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:05,792 INFO L413 NwaCegarLoop]: 4735 mSDtfsCounter, 5184 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5200 SdHoareTripleChecker+Valid, 22138 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:05,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5200 Valid, 22138 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:41:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-07-22 19:41:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-07-22 19:41:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-22 19:41:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-07-22 19:41:06,943 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-07-22 19:41:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:06,943 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-07-22 19:41:06,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-07-22 19:41:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:41:06,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:06,953 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:41:06,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:41:06,953 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:06,954 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-07-22 19:41:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:06,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718082874] [2022-07-22 19:41:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:06,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:41:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:41:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:41:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:41:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:07,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718082874] [2022-07-22 19:41:07,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718082874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:07,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:07,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:07,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401866656] [2022-07-22 19:41:07,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:07,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:07,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:07,053 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:11,618 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-07-22 19:41:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:11,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:41:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:11,759 INFO L225 Difference]: With dead ends: 69177 [2022-07-22 19:41:11,760 INFO L226 Difference]: Without dead ends: 50519 [2022-07-22 19:41:11,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:11,797 INFO L413 NwaCegarLoop]: 4728 mSDtfsCounter, 5186 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 22131 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:11,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 22131 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:41:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-07-22 19:41:13,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-07-22 19:41:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-22 19:41:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-07-22 19:41:13,963 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-07-22 19:41:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:13,963 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-07-22 19:41:13,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-07-22 19:41:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:41:13,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:13,979 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:41:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:41:13,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-07-22 19:41:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:13,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271339818] [2022-07-22 19:41:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:13,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:41:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:14,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:41:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:41:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:41:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:14,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:14,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271339818] [2022-07-22 19:41:14,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271339818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:14,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:14,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:14,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114520568] [2022-07-22 19:41:14,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:14,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:14,067 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:24,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:24,438 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-07-22 19:41:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:41:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:41:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:24,830 INFO L225 Difference]: With dead ends: 151030 [2022-07-22 19:41:24,830 INFO L226 Difference]: Without dead ends: 113875 [2022-07-22 19:41:25,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:41:25,101 INFO L413 NwaCegarLoop]: 4856 mSDtfsCounter, 5263 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22248 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:25,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 22248 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 19:41:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2022-07-22 19:41:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2022-07-22 19:41:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-22 19:41:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2022-07-22 19:41:29,757 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2022-07-22 19:41:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:29,757 INFO L495 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2022-07-22 19:41:29,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2022-07-22 19:41:29,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:41:29,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:29,787 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:41:29,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:41:29,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:29,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2022-07-22 19:41:29,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:29,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275642366] [2022-07-22 19:41:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:29,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:29,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:41:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:41:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:41:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:41:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:29,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:29,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275642366] [2022-07-22 19:41:29,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275642366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:29,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:29,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265540850] [2022-07-22 19:41:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:29,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:29,880 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:41:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:49,506 INFO L93 Difference]: Finished difference Result 290934 states and 478781 transitions. [2022-07-22 19:41:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:41:49,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-07-22 19:41:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:50,594 INFO L225 Difference]: With dead ends: 290934 [2022-07-22 19:41:50,594 INFO L226 Difference]: Without dead ends: 218193 [2022-07-22 19:41:50,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:41:50,786 INFO L413 NwaCegarLoop]: 4712 mSDtfsCounter, 5471 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 22107 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:50,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5497 Valid, 22107 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 19:41:50,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218193 states. [2022-07-22 19:42:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218193 to 147200. [2022-07-22 19:42:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147200 states, 134879 states have (on average 1.558811972212131) internal successors, (210251), 135394 states have internal predecessors, (210251), 8729 states have call successors, (8729), 3079 states have call predecessors, (8729), 3590 states have return successors, (28922), 9238 states have call predecessors, (28922), 8727 states have call successors, (28922) [2022-07-22 19:42:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147200 states to 147200 states and 247902 transitions. [2022-07-22 19:42:01,044 INFO L78 Accepts]: Start accepts. Automaton has 147200 states and 247902 transitions. Word has length 146 [2022-07-22 19:42:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:01,044 INFO L495 AbstractCegarLoop]: Abstraction has 147200 states and 247902 transitions. [2022-07-22 19:42:01,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-22 19:42:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 147200 states and 247902 transitions. [2022-07-22 19:42:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:42:01,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:01,366 INFO L195 NwaCegarLoop]: 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] [2022-07-22 19:42:01,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 19:42:01,366 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:01,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2022-07-22 19:42:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:01,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684558495] [2022-07-22 19:42:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:42:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:42:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:42:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:42:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:01,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:01,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684558495] [2022-07-22 19:42:01,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684558495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:01,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:01,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:01,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289760582] [2022-07-22 19:42:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:01,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:01,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:01,469 INFO L87 Difference]: Start difference. First operand 147200 states and 247902 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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)