./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 787fd4e7c035abcc01b5459445c9a556e2360c9914b85bc4573ad4dc94fc74c0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:55:57,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:55:57,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:55:57,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:55:57,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:55:57,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:55:57,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:55:57,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:55:57,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:55:57,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:55:57,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:55:57,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:55:57,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:55:57,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:55:57,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:55:57,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:55:57,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:55:57,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:55:57,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:55:57,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:55:57,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:55:57,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:55:57,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:55:57,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:55:57,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:55:57,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:55:57,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:55:57,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:55:57,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:55:57,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:55:57,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:55:57,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:55:57,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:55:57,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:55:57,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:55:57,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:55:57,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:55:57,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:55:57,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:55:57,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:55:57,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:55:57,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:55:57,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:55:57,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:55:57,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:55:57,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:55:57,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:55:57,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:55:57,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:55:57,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:55:57,261 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:55:57,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:55:57,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:55:57,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:55:57,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:55:57,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:55:57,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:55:57,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:55:57,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:55:57,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:55:57,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:55:57,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:55:57,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:55:57,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:55:57,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:55:57,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:55:57,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:55:57,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:55:57,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:55:57,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:55:57,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:55:57,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:55:57,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:55:57,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:55:57,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:55:57,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:55:57,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 787fd4e7c035abcc01b5459445c9a556e2360c9914b85bc4573ad4dc94fc74c0 [2021-12-17 18:55:57,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:55:57,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:55:57,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:55:57,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:55:57,532 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:55:57,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c [2021-12-17 18:55:57,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11724092/7c82bddac7c14c6f821b3bab5a042249/FLAG0a1e46b05 [2021-12-17 18:55:58,478 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:55:58,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c [2021-12-17 18:55:58,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11724092/7c82bddac7c14c6f821b3bab5a042249/FLAG0a1e46b05 [2021-12-17 18:55:58,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11724092/7c82bddac7c14c6f821b3bab5a042249 [2021-12-17 18:55:58,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:55:58,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:55:58,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:55:58,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:55:58,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:55:58,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:55:58" (1/1) ... [2021-12-17 18:55:58,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40aba78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:55:58, skipping insertion in model container [2021-12-17 18:55:58,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:55:58" (1/1) ... [2021-12-17 18:55:58,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:55:59,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:56:00,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c[381679,381692] [2021-12-17 18:56:00,744 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c[383339,383352] [2021-12-17 18:56:01,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:56:01,182 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:56:01,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c[381679,381692] [2021-12-17 18:56:01,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-1.c[383339,383352] [2021-12-17 18:56:01,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:56:02,026 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:56:02,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02 WrapperNode [2021-12-17 18:56:02,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:56:02,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:56:02,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:56:02,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:56:02,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:02,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:02,635 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13262 [2021-12-17 18:56:02,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:56:02,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:56:02,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:56:02,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:56:02,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:02,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:02,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:02,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:02,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:03,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:03,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:03,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:56:03,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:56:03,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:56:03,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:56:03,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (1/1) ... [2021-12-17 18:56:03,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:56:03,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:56:03,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 18:56:03,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 18:56:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:56:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:56:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:56:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:56:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:56:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:56:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:56:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 18:56:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 18:56:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:56:03,318 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:56:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:56:03,318 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:56:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:56:03,318 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:56:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:56:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:56:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:56:03,495 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:56:03,497 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:56:09,725 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:56:09,748 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:56:09,749 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-17 18:56:09,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:56:09 BoogieIcfgContainer [2021-12-17 18:56:09,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:56:09,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:56:09,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:56:09,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:56:09,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:55:58" (1/3) ... [2021-12-17 18:56:09,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc69097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:56:09, skipping insertion in model container [2021-12-17 18:56:09,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:56:02" (2/3) ... [2021-12-17 18:56:09,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc69097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:56:09, skipping insertion in model container [2021-12-17 18:56:09,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:56:09" (3/3) ... [2021-12-17 18:56:09,764 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.13.cil-1.c [2021-12-17 18:56:09,769 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:56:09,769 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:56:09,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:56:09,841 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 18:56:09,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:56:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-17 18:56:09,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:09,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:09,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:09,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:09,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2021-12-17 18:56:09,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:09,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153733689] [2021-12-17 18:56:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:09,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:10,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:10,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153733689] [2021-12-17 18:56:10,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153733689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:10,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:10,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:56:10,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066023885] [2021-12-17 18:56:10,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:10,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:56:10,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:10,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:56:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:56:10,604 INFO L87 Difference]: Start difference. First operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:12,585 INFO L93 Difference]: Finished difference Result 5340 states and 9793 transitions. [2021-12-17 18:56:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:56:12,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:12,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:12,627 INFO L225 Difference]: With dead ends: 5340 [2021-12-17 18:56:12,628 INFO L226 Difference]: Without dead ends: 2683 [2021-12-17 18:56:12,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:56:12,646 INFO L933 BasicCegarLoop]: 4741 mSDtfsCounter, 1121 mSDsluCounter, 12530 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:12,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 17271 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-17 18:56:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-17 18:56:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.824709185720016) internal successors, (4549), 2496 states have internal predecessors, (4549), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:56:12,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4605 transitions. [2021-12-17 18:56:12,813 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4605 transitions. Word has length 190 [2021-12-17 18:56:12,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:12,814 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4605 transitions. [2021-12-17 18:56:12,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4605 transitions. [2021-12-17 18:56:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:12,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:12,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:12,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:56:12,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash 431579580, now seen corresponding path program 1 times [2021-12-17 18:56:12,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:12,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034946807] [2021-12-17 18:56:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:12,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:13,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:13,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034946807] [2021-12-17 18:56:13,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034946807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:13,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:13,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:56:13,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834184629] [2021-12-17 18:56:13,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:13,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:56:13,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:13,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:56:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:56:13,109 INFO L87 Difference]: Start difference. First operand 2530 states and 4605 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:14,730 INFO L93 Difference]: Finished difference Result 3075 states and 5487 transitions. [2021-12-17 18:56:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:56:14,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:14,753 INFO L225 Difference]: With dead ends: 3075 [2021-12-17 18:56:14,753 INFO L226 Difference]: Without dead ends: 2683 [2021-12-17 18:56:14,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:56:14,759 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 1107 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 16998 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:14,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 16998 Invalid, 820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-17 18:56:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-17 18:56:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8243080625752106) internal successors, (4548), 2496 states have internal predecessors, (4548), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:56:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4604 transitions. [2021-12-17 18:56:14,850 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4604 transitions. Word has length 190 [2021-12-17 18:56:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:14,851 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4604 transitions. [2021-12-17 18:56:14,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4604 transitions. [2021-12-17 18:56:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:14,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:14,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:14,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:56:14,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:14,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash -217013190, now seen corresponding path program 1 times [2021-12-17 18:56:14,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:14,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141388319] [2021-12-17 18:56:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:14,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:15,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:15,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141388319] [2021-12-17 18:56:15,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141388319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:15,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:56:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903170594] [2021-12-17 18:56:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:15,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:56:15,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:56:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:56:15,077 INFO L87 Difference]: Start difference. First operand 2530 states and 4604 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:17,026 INFO L93 Difference]: Finished difference Result 3070 states and 5479 transitions. [2021-12-17 18:56:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:56:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:17,040 INFO L225 Difference]: With dead ends: 3070 [2021-12-17 18:56:17,041 INFO L226 Difference]: Without dead ends: 2682 [2021-12-17 18:56:17,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 18:56:17,045 INFO L933 BasicCegarLoop]: 4625 mSDtfsCounter, 5056 mSDsluCounter, 12608 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 17233 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:17,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5077 Valid, 17233 Invalid, 1491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 18:56:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-12-17 18:56:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2530. [2021-12-17 18:56:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.823906939430405) internal successors, (4547), 2496 states have internal predecessors, (4547), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:56:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4603 transitions. [2021-12-17 18:56:17,143 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4603 transitions. Word has length 190 [2021-12-17 18:56:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:17,143 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4603 transitions. [2021-12-17 18:56:17,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4603 transitions. [2021-12-17 18:56:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:17,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:17,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:17,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:56:17,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash 291765624, now seen corresponding path program 1 times [2021-12-17 18:56:17,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:17,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086550708] [2021-12-17 18:56:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:17,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:17,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:17,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:17,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:17,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:17,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086550708] [2021-12-17 18:56:17,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086550708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:17,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:17,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:17,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414643620] [2021-12-17 18:56:17,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:17,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:17,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:17,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:17,319 INFO L87 Difference]: Start difference. First operand 2530 states and 4603 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:18,982 INFO L93 Difference]: Finished difference Result 3069 states and 5477 transitions. [2021-12-17 18:56:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:56:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:18,997 INFO L225 Difference]: With dead ends: 3069 [2021-12-17 18:56:18,997 INFO L226 Difference]: Without dead ends: 2681 [2021-12-17 18:56:18,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 18:56:19,008 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5339 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5360 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:19,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5360 Valid, 17302 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-17 18:56:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2530. [2021-12-17 18:56:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8227035699959888) internal successors, (4544), 2496 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:56:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4600 transitions. [2021-12-17 18:56:19,086 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4600 transitions. Word has length 190 [2021-12-17 18:56:19,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:19,087 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4600 transitions. [2021-12-17 18:56:19,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:19,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4600 transitions. [2021-12-17 18:56:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:19,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:19,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:19,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:56:19,091 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1984573188, now seen corresponding path program 1 times [2021-12-17 18:56:19,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:19,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130508446] [2021-12-17 18:56:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:19,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:19,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:19,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:19,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130508446] [2021-12-17 18:56:19,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130508446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:19,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:19,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:19,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42090939] [2021-12-17 18:56:19,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:19,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:19,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:19,275 INFO L87 Difference]: Start difference. First operand 2530 states and 4600 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:20,956 INFO L93 Difference]: Finished difference Result 3095 states and 5519 transitions. [2021-12-17 18:56:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:20,970 INFO L225 Difference]: With dead ends: 3095 [2021-12-17 18:56:20,970 INFO L226 Difference]: Without dead ends: 2707 [2021-12-17 18:56:20,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:20,974 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 5333 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5354 SdHoareTripleChecker+Valid, 17348 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:20,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5354 Valid, 17348 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-12-17 18:56:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2530. [2021-12-17 18:56:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8223024468511833) internal successors, (4543), 2496 states have internal predecessors, (4543), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:56:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4599 transitions. [2021-12-17 18:56:21,053 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4599 transitions. Word has length 190 [2021-12-17 18:56:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:21,054 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4599 transitions. [2021-12-17 18:56:21,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4599 transitions. [2021-12-17 18:56:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:21,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:21,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:21,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:56:21,062 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1486016386, now seen corresponding path program 1 times [2021-12-17 18:56:21,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:21,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589419633] [2021-12-17 18:56:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:21,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:21,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:21,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:21,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589419633] [2021-12-17 18:56:21,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589419633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:21,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:21,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:21,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684712465] [2021-12-17 18:56:21,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:21,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:21,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:21,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:21,239 INFO L87 Difference]: Start difference. First operand 2530 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:22,923 INFO L93 Difference]: Finished difference Result 3094 states and 5514 transitions. [2021-12-17 18:56:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:22,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:22,934 INFO L225 Difference]: With dead ends: 3094 [2021-12-17 18:56:22,934 INFO L226 Difference]: Without dead ends: 2706 [2021-12-17 18:56:22,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:22,938 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5153 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5174 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:22,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5174 Valid, 21517 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:56:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-12-17 18:56:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2530. [2021-12-17 18:56:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.821901323706378) internal successors, (4542), 2496 states have internal predecessors, (4542), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:56:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4598 transitions. [2021-12-17 18:56:23,002 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4598 transitions. Word has length 190 [2021-12-17 18:56:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:23,003 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4598 transitions. [2021-12-17 18:56:23,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4598 transitions. [2021-12-17 18:56:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:23,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:23,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:23,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:56:23,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:23,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash -915744580, now seen corresponding path program 1 times [2021-12-17 18:56:23,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:23,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926204811] [2021-12-17 18:56:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:23,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:23,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:23,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:23,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:23,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926204811] [2021-12-17 18:56:23,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926204811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:23,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:23,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:56:23,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165997142] [2021-12-17 18:56:23,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:23,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:56:23,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:23,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:56:23,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:56:23,190 INFO L87 Difference]: Start difference. First operand 2530 states and 4598 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:26,789 INFO L93 Difference]: Finished difference Result 3654 states and 6411 transitions. [2021-12-17 18:56:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:56:26,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:26,807 INFO L225 Difference]: With dead ends: 3654 [2021-12-17 18:56:26,807 INFO L226 Difference]: Without dead ends: 3266 [2021-12-17 18:56:26,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 18:56:26,812 INFO L933 BasicCegarLoop]: 5038 mSDtfsCounter, 5809 mSDsluCounter, 22669 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5830 SdHoareTripleChecker+Valid, 27707 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:26,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5830 Valid, 27707 Invalid, 3460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 18:56:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2021-12-17 18:56:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2936. [2021-12-17 18:56:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7908678982223771) internal successors, (5138), 2873 states have internal predecessors, (5138), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5243 transitions. [2021-12-17 18:56:26,913 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5243 transitions. Word has length 190 [2021-12-17 18:56:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:26,913 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5243 transitions. [2021-12-17 18:56:26,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5243 transitions. [2021-12-17 18:56:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:26,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:26,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:26,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:56:26,917 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash 488124606, now seen corresponding path program 1 times [2021-12-17 18:56:26,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:26,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487247209] [2021-12-17 18:56:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:26,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:26,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:27,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:27,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487247209] [2021-12-17 18:56:27,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487247209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:27,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:27,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:27,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951614544] [2021-12-17 18:56:27,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:27,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:27,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:27,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:27,143 INFO L87 Difference]: Start difference. First operand 2936 states and 5243 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:28,683 INFO L93 Difference]: Finished difference Result 4101 states and 7141 transitions. [2021-12-17 18:56:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:28,697 INFO L225 Difference]: With dead ends: 4101 [2021-12-17 18:56:28,697 INFO L226 Difference]: Without dead ends: 3307 [2021-12-17 18:56:28,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:28,702 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 5416 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5437 SdHoareTripleChecker+Valid, 17289 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:28,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5437 Valid, 17289 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:56:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-12-17 18:56:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2936. [2021-12-17 18:56:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7901707912164517) internal successors, (5136), 2873 states have internal predecessors, (5136), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5241 transitions. [2021-12-17 18:56:28,820 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5241 transitions. Word has length 190 [2021-12-17 18:56:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:28,821 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5241 transitions. [2021-12-17 18:56:28,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5241 transitions. [2021-12-17 18:56:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:28,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:28,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:28,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:56:28,825 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:28,826 INFO L85 PathProgramCache]: Analyzing trace with hash -297873284, now seen corresponding path program 1 times [2021-12-17 18:56:28,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:28,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982817759] [2021-12-17 18:56:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:28,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:28,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982817759] [2021-12-17 18:56:28,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982817759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:28,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:28,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:28,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475338583] [2021-12-17 18:56:28,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:28,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:28,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:28,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:28,990 INFO L87 Difference]: Start difference. First operand 2936 states and 5241 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:30,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:30,518 INFO L93 Difference]: Finished difference Result 4098 states and 7129 transitions. [2021-12-17 18:56:30,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:30,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:30,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:30,530 INFO L225 Difference]: With dead ends: 4098 [2021-12-17 18:56:30,530 INFO L226 Difference]: Without dead ends: 3304 [2021-12-17 18:56:30,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:30,534 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5328 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5349 SdHoareTripleChecker+Valid, 17332 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:30,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5349 Valid, 17332 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:56:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2021-12-17 18:56:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 2936. [2021-12-17 18:56:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7894736842105263) internal successors, (5134), 2873 states have internal predecessors, (5134), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5239 transitions. [2021-12-17 18:56:30,649 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5239 transitions. Word has length 190 [2021-12-17 18:56:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:30,650 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5239 transitions. [2021-12-17 18:56:30,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5239 transitions. [2021-12-17 18:56:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:30,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:30,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:30,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:56:30,654 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:30,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:30,656 INFO L85 PathProgramCache]: Analyzing trace with hash 369508606, now seen corresponding path program 1 times [2021-12-17 18:56:30,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:30,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701310977] [2021-12-17 18:56:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:30,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:30,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:30,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:30,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701310977] [2021-12-17 18:56:30,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701310977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:30,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:30,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:30,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575917322] [2021-12-17 18:56:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:30,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:30,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:30,840 INFO L87 Difference]: Start difference. First operand 2936 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:32,494 INFO L93 Difference]: Finished difference Result 4095 states and 7117 transitions. [2021-12-17 18:56:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:32,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:32,513 INFO L225 Difference]: With dead ends: 4095 [2021-12-17 18:56:32,513 INFO L226 Difference]: Without dead ends: 3301 [2021-12-17 18:56:32,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:32,518 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 5148 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5169 SdHoareTripleChecker+Valid, 21501 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:32,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5169 Valid, 21501 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-12-17 18:56:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 2936. [2021-12-17 18:56:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.788776577204601) internal successors, (5132), 2873 states have internal predecessors, (5132), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5237 transitions. [2021-12-17 18:56:32,681 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5237 transitions. Word has length 190 [2021-12-17 18:56:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:32,682 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5237 transitions. [2021-12-17 18:56:32,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5237 transitions. [2021-12-17 18:56:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:32,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:32,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:32,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:56:32,685 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1825720260, now seen corresponding path program 1 times [2021-12-17 18:56:32,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:32,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369962855] [2021-12-17 18:56:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:32,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:32,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:32,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:32,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369962855] [2021-12-17 18:56:32,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369962855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:32,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:32,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:32,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914791280] [2021-12-17 18:56:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:32,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:32,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:32,835 INFO L87 Difference]: Start difference. First operand 2936 states and 5237 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:34,190 INFO L93 Difference]: Finished difference Result 4092 states and 7105 transitions. [2021-12-17 18:56:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:34,197 INFO L225 Difference]: With dead ends: 4092 [2021-12-17 18:56:34,197 INFO L226 Difference]: Without dead ends: 3298 [2021-12-17 18:56:34,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:34,201 INFO L933 BasicCegarLoop]: 4636 mSDtfsCounter, 5327 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 17322 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:34,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 17322 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:56:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2021-12-17 18:56:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2936. [2021-12-17 18:56:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7880794701986755) internal successors, (5130), 2873 states have internal predecessors, (5130), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5235 transitions. [2021-12-17 18:56:34,293 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5235 transitions. Word has length 190 [2021-12-17 18:56:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:34,293 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5235 transitions. [2021-12-17 18:56:34,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5235 transitions. [2021-12-17 18:56:34,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:34,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:34,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:34,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:56:34,296 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1480892098, now seen corresponding path program 1 times [2021-12-17 18:56:34,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:34,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689051951] [2021-12-17 18:56:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:34,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:34,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:34,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:34,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689051951] [2021-12-17 18:56:34,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689051951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:34,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:34,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:34,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992286012] [2021-12-17 18:56:34,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:34,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:34,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:34,442 INFO L87 Difference]: Start difference. First operand 2936 states and 5235 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:35,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:35,989 INFO L93 Difference]: Finished difference Result 4086 states and 7087 transitions. [2021-12-17 18:56:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:35,999 INFO L225 Difference]: With dead ends: 4086 [2021-12-17 18:56:36,000 INFO L226 Difference]: Without dead ends: 3292 [2021-12-17 18:56:36,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:36,005 INFO L933 BasicCegarLoop]: 4630 mSDtfsCounter, 5145 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 21489 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:36,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 21489 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:56:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-12-17 18:56:36,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2936. [2021-12-17 18:56:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7873823631927501) internal successors, (5128), 2873 states have internal predecessors, (5128), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5233 transitions. [2021-12-17 18:56:36,097 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5233 transitions. Word has length 190 [2021-12-17 18:56:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5233 transitions. [2021-12-17 18:56:36,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5233 transitions. [2021-12-17 18:56:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:36,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:36,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:36,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:56:36,099 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1044603584, now seen corresponding path program 1 times [2021-12-17 18:56:36,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:36,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250840985] [2021-12-17 18:56:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:36,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:36,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250840985] [2021-12-17 18:56:36,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250840985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:36,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:36,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:36,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138137942] [2021-12-17 18:56:36,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:36,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:36,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:36,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:36,248 INFO L87 Difference]: Start difference. First operand 2936 states and 5233 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:38,005 INFO L93 Difference]: Finished difference Result 4083 states and 7075 transitions. [2021-12-17 18:56:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:38,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:38,013 INFO L225 Difference]: With dead ends: 4083 [2021-12-17 18:56:38,013 INFO L226 Difference]: Without dead ends: 3289 [2021-12-17 18:56:38,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:38,017 INFO L933 BasicCegarLoop]: 4626 mSDtfsCounter, 5143 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 21485 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:38,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 21485 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:56:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-17 18:56:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2936. [2021-12-17 18:56:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7866852561868247) internal successors, (5126), 2873 states have internal predecessors, (5126), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5231 transitions. [2021-12-17 18:56:38,112 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5231 transitions. Word has length 190 [2021-12-17 18:56:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:38,112 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5231 transitions. [2021-12-17 18:56:38,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5231 transitions. [2021-12-17 18:56:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:38,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:38,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:38,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:56:38,115 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:38,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash 433334526, now seen corresponding path program 1 times [2021-12-17 18:56:38,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:38,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591733137] [2021-12-17 18:56:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:38,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:38,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:38,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:38,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591733137] [2021-12-17 18:56:38,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591733137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:38,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:38,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:38,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991014152] [2021-12-17 18:56:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:38,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:38,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:38,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:38,288 INFO L87 Difference]: Start difference. First operand 2936 states and 5231 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:39,895 INFO L93 Difference]: Finished difference Result 4080 states and 7063 transitions. [2021-12-17 18:56:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:39,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:39,904 INFO L225 Difference]: With dead ends: 4080 [2021-12-17 18:56:39,904 INFO L226 Difference]: Without dead ends: 3286 [2021-12-17 18:56:39,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:39,907 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 5141 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:39,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21481 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-12-17 18:56:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2936. [2021-12-17 18:56:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7859881491808993) internal successors, (5124), 2873 states have internal predecessors, (5124), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5229 transitions. [2021-12-17 18:56:40,003 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5229 transitions. Word has length 190 [2021-12-17 18:56:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:40,004 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5229 transitions. [2021-12-17 18:56:40,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5229 transitions. [2021-12-17 18:56:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:40,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:40,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:40,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:56:40,007 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash -971857152, now seen corresponding path program 1 times [2021-12-17 18:56:40,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:40,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545971185] [2021-12-17 18:56:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:40,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:40,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:40,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545971185] [2021-12-17 18:56:40,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545971185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:40,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:40,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:40,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045435989] [2021-12-17 18:56:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:40,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:40,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:40,147 INFO L87 Difference]: Start difference. First operand 2936 states and 5229 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:41,572 INFO L93 Difference]: Finished difference Result 4077 states and 7051 transitions. [2021-12-17 18:56:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:41,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:41,582 INFO L225 Difference]: With dead ends: 4077 [2021-12-17 18:56:41,582 INFO L226 Difference]: Without dead ends: 3283 [2021-12-17 18:56:41,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:41,586 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5369 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:41,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5390 Valid, 17271 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:56:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-12-17 18:56:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2936. [2021-12-17 18:56:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.785291042174974) internal successors, (5122), 2873 states have internal predecessors, (5122), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5227 transitions. [2021-12-17 18:56:41,680 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5227 transitions. Word has length 190 [2021-12-17 18:56:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:41,680 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5227 transitions. [2021-12-17 18:56:41,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5227 transitions. [2021-12-17 18:56:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:41,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:41,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:41,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 18:56:41,683 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 922476734, now seen corresponding path program 1 times [2021-12-17 18:56:41,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:41,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188463081] [2021-12-17 18:56:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:41,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:41,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:41,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:41,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:41,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188463081] [2021-12-17 18:56:41,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188463081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:41,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:41,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:41,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443544736] [2021-12-17 18:56:41,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:41,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:41,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:41,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:41,822 INFO L87 Difference]: Start difference. First operand 2936 states and 5227 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:43,412 INFO L93 Difference]: Finished difference Result 4074 states and 7039 transitions. [2021-12-17 18:56:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:43,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:43,421 INFO L225 Difference]: With dead ends: 4074 [2021-12-17 18:56:43,421 INFO L226 Difference]: Without dead ends: 3280 [2021-12-17 18:56:43,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:43,424 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 5313 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 17298 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:43,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5334 Valid, 17298 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:56:43,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-12-17 18:56:43,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2936. [2021-12-17 18:56:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7845939351690485) internal successors, (5120), 2873 states have internal predecessors, (5120), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5225 transitions. [2021-12-17 18:56:43,525 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5225 transitions. Word has length 190 [2021-12-17 18:56:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:43,525 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5225 transitions. [2021-12-17 18:56:43,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5225 transitions. [2021-12-17 18:56:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:43,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:43,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:43,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 18:56:43,528 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:43,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1925909696, now seen corresponding path program 1 times [2021-12-17 18:56:43,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:43,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44642434] [2021-12-17 18:56:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:43,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:43,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:43,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44642434] [2021-12-17 18:56:43,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44642434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:43,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:43,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:43,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907186561] [2021-12-17 18:56:43,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:43,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:43,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:43,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:43,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:43,691 INFO L87 Difference]: Start difference. First operand 2936 states and 5225 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:45,305 INFO L93 Difference]: Finished difference Result 4071 states and 7027 transitions. [2021-12-17 18:56:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:45,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:45,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:45,313 INFO L225 Difference]: With dead ends: 4071 [2021-12-17 18:56:45,313 INFO L226 Difference]: Without dead ends: 3277 [2021-12-17 18:56:45,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:45,316 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:45,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21467 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:45,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-17 18:56:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2936. [2021-12-17 18:56:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7838968281631231) internal successors, (5118), 2873 states have internal predecessors, (5118), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5223 transitions. [2021-12-17 18:56:45,419 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5223 transitions. Word has length 190 [2021-12-17 18:56:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:45,420 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5223 transitions. [2021-12-17 18:56:45,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5223 transitions. [2021-12-17 18:56:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:45,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:45,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:45,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 18:56:45,422 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1445890174, now seen corresponding path program 1 times [2021-12-17 18:56:45,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:45,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381905550] [2021-12-17 18:56:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:45,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:45,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:45,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381905550] [2021-12-17 18:56:45,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381905550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:45,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:45,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:45,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657941693] [2021-12-17 18:56:45,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:45,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:45,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:45,571 INFO L87 Difference]: Start difference. First operand 2936 states and 5223 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:47,320 INFO L93 Difference]: Finished difference Result 4068 states and 7015 transitions. [2021-12-17 18:56:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:47,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:47,333 INFO L225 Difference]: With dead ends: 4068 [2021-12-17 18:56:47,333 INFO L226 Difference]: Without dead ends: 3274 [2021-12-17 18:56:47,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:47,336 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21461 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:47,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21461 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-12-17 18:56:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2936. [2021-12-17 18:56:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7831997211571977) internal successors, (5116), 2873 states have internal predecessors, (5116), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5221 transitions. [2021-12-17 18:56:47,443 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5221 transitions. Word has length 190 [2021-12-17 18:56:47,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:47,444 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5221 transitions. [2021-12-17 18:56:47,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5221 transitions. [2021-12-17 18:56:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:47,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:47,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:47,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 18:56:47,447 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1831752576, now seen corresponding path program 1 times [2021-12-17 18:56:47,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:47,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738340889] [2021-12-17 18:56:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:47,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:47,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:47,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738340889] [2021-12-17 18:56:47,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738340889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:47,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:47,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:47,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465512025] [2021-12-17 18:56:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:47,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:47,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:47,604 INFO L87 Difference]: Start difference. First operand 2936 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:48,928 INFO L93 Difference]: Finished difference Result 4062 states and 6997 transitions. [2021-12-17 18:56:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:48,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:48,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:48,934 INFO L225 Difference]: With dead ends: 4062 [2021-12-17 18:56:48,935 INFO L226 Difference]: Without dead ends: 3268 [2021-12-17 18:56:48,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:48,938 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 5308 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5329 SdHoareTripleChecker+Valid, 17282 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:48,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5329 Valid, 17282 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:56:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-17 18:56:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2936. [2021-12-17 18:56:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7825026141512723) internal successors, (5114), 2873 states have internal predecessors, (5114), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5219 transitions. [2021-12-17 18:56:49,044 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5219 transitions. Word has length 190 [2021-12-17 18:56:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:49,045 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5219 transitions. [2021-12-17 18:56:49,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5219 transitions. [2021-12-17 18:56:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:49,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:49,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:49,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 18:56:49,052 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:49,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash -532089086, now seen corresponding path program 1 times [2021-12-17 18:56:49,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:49,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701486928] [2021-12-17 18:56:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:49,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:49,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:49,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:49,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701486928] [2021-12-17 18:56:49,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701486928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:49,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:49,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:49,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496678976] [2021-12-17 18:56:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:49,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:49,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:49,193 INFO L87 Difference]: Start difference. First operand 2936 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:50,830 INFO L93 Difference]: Finished difference Result 4059 states and 6985 transitions. [2021-12-17 18:56:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:50,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:50,838 INFO L225 Difference]: With dead ends: 4059 [2021-12-17 18:56:50,839 INFO L226 Difference]: Without dead ends: 3265 [2021-12-17 18:56:50,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:50,843 INFO L933 BasicCegarLoop]: 4594 mSDtfsCounter, 5128 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5149 SdHoareTripleChecker+Valid, 21451 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:50,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5149 Valid, 21451 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:56:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-17 18:56:50,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2936. [2021-12-17 18:56:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.781805507145347) internal successors, (5112), 2873 states have internal predecessors, (5112), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:56:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5217 transitions. [2021-12-17 18:56:50,962 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5217 transitions. Word has length 190 [2021-12-17 18:56:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:50,963 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5217 transitions. [2021-12-17 18:56:50,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5217 transitions. [2021-12-17 18:56:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:50,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:50,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:50,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 18:56:50,965 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1855268032, now seen corresponding path program 1 times [2021-12-17 18:56:50,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:50,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721708200] [2021-12-17 18:56:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:50,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:50,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:51,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:51,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721708200] [2021-12-17 18:56:51,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721708200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:51,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:51,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:56:51,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903254364] [2021-12-17 18:56:51,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:51,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:56:51,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:51,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:56:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:56:51,117 INFO L87 Difference]: Start difference. First operand 2936 states and 5217 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:54,482 INFO L93 Difference]: Finished difference Result 5358 states and 9027 transitions. [2021-12-17 18:56:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 18:56:54,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:54,492 INFO L225 Difference]: With dead ends: 5358 [2021-12-17 18:56:54,492 INFO L226 Difference]: Without dead ends: 4564 [2021-12-17 18:56:54,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 18:56:54,495 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5948 mSDsluCounter, 22653 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5984 SdHoareTripleChecker+Valid, 27592 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:54,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5984 Valid, 27592 Invalid, 3074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 18:56:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-12-17 18:56:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3742. [2021-12-17 18:56:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7336099585062241) internal successors, (6267), 3623 states have internal predecessors, (6267), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:56:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6472 transitions. [2021-12-17 18:56:54,669 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6472 transitions. Word has length 190 [2021-12-17 18:56:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:54,669 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6472 transitions. [2021-12-17 18:56:54,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6472 transitions. [2021-12-17 18:56:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:54,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:54,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:54,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 18:56:54,672 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash 41711426, now seen corresponding path program 1 times [2021-12-17 18:56:54,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:54,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934622326] [2021-12-17 18:56:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:54,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:54,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:54,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934622326] [2021-12-17 18:56:54,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934622326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:54,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:54,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:54,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288496639] [2021-12-17 18:56:54,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:54,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:54,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:54,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:54,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:54,804 INFO L87 Difference]: Start difference. First operand 3742 states and 6472 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:56,622 INFO L93 Difference]: Finished difference Result 6009 states and 10036 transitions. [2021-12-17 18:56:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:56,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:56,629 INFO L225 Difference]: With dead ends: 6009 [2021-12-17 18:56:56,629 INFO L226 Difference]: Without dead ends: 4409 [2021-12-17 18:56:56,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:56,632 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5149 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21429 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:56,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 21429 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:56:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2021-12-17 18:56:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 3742. [2021-12-17 18:56:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7325034578146612) internal successors, (6263), 3623 states have internal predecessors, (6263), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:56:56,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6468 transitions. [2021-12-17 18:56:56,820 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6468 transitions. Word has length 190 [2021-12-17 18:56:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:56,820 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6468 transitions. [2021-12-17 18:56:56,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6468 transitions. [2021-12-17 18:56:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:56,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:56,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:56,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 18:56:56,824 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 379998976, now seen corresponding path program 1 times [2021-12-17 18:56:56,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:56,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244375878] [2021-12-17 18:56:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:56,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:56,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244375878] [2021-12-17 18:56:56,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244375878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:56,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:56,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:56,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635989950] [2021-12-17 18:56:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:56,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:56,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:56,964 INFO L87 Difference]: Start difference. First operand 3742 states and 6468 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:56:58,658 INFO L93 Difference]: Finished difference Result 6000 states and 10006 transitions. [2021-12-17 18:56:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:56:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:56:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:56:58,667 INFO L225 Difference]: With dead ends: 6000 [2021-12-17 18:56:58,668 INFO L226 Difference]: Without dead ends: 4400 [2021-12-17 18:56:58,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:56:58,673 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 5125 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5146 SdHoareTripleChecker+Valid, 21440 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:56:58,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5146 Valid, 21440 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:56:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2021-12-17 18:56:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3742. [2021-12-17 18:56:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7313969571230983) internal successors, (6259), 3623 states have internal predecessors, (6259), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:56:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6464 transitions. [2021-12-17 18:56:58,869 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6464 transitions. Word has length 190 [2021-12-17 18:56:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:56:58,869 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6464 transitions. [2021-12-17 18:56:58,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:56:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6464 transitions. [2021-12-17 18:56:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:56:58,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:56:58,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:56:58,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 18:56:58,872 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:56:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:56:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash 806553474, now seen corresponding path program 1 times [2021-12-17 18:56:58,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:56:58,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099014269] [2021-12-17 18:56:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:56:58,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:56:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:56:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:56:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:56:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:56:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:59,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:56:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:56:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:56:59,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:56:59,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099014269] [2021-12-17 18:56:59,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099014269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:56:59,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:56:59,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:56:59,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645974374] [2021-12-17 18:56:59,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:56:59,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:56:59,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:56:59,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:56:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:56:59,017 INFO L87 Difference]: Start difference. First operand 3742 states and 6464 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:00,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:00,469 INFO L93 Difference]: Finished difference Result 5991 states and 9976 transitions. [2021-12-17 18:57:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:57:00,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:57:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:00,478 INFO L225 Difference]: With dead ends: 5991 [2021-12-17 18:57:00,478 INFO L226 Difference]: Without dead ends: 4391 [2021-12-17 18:57:00,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:00,482 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 5301 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5322 SdHoareTripleChecker+Valid, 17263 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:00,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5322 Valid, 17263 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:57:00,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2021-12-17 18:57:00,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 3742. [2021-12-17 18:57:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7302904564315353) internal successors, (6255), 3623 states have internal predecessors, (6255), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:57:00,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6460 transitions. [2021-12-17 18:57:00,678 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6460 transitions. Word has length 190 [2021-12-17 18:57:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:00,678 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6460 transitions. [2021-12-17 18:57:00,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:00,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6460 transitions. [2021-12-17 18:57:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:57:00,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:00,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:00,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 18:57:00,681 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:00,682 INFO L85 PathProgramCache]: Analyzing trace with hash 266123968, now seen corresponding path program 1 times [2021-12-17 18:57:00,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:00,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327391711] [2021-12-17 18:57:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:00,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:00,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:00,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:00,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327391711] [2021-12-17 18:57:00,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327391711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:00,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:00,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:00,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446436168] [2021-12-17 18:57:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:00,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:00,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:00,828 INFO L87 Difference]: Start difference. First operand 3742 states and 6460 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:02,245 INFO L93 Difference]: Finished difference Result 5982 states and 9946 transitions. [2021-12-17 18:57:02,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:57:02,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:57:02,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:02,253 INFO L225 Difference]: With dead ends: 5982 [2021-12-17 18:57:02,253 INFO L226 Difference]: Without dead ends: 4382 [2021-12-17 18:57:02,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:02,260 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 5302 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 17257 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:02,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5323 Valid, 17257 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:57:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2021-12-17 18:57:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 3742. [2021-12-17 18:57:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7291839557399724) internal successors, (6251), 3623 states have internal predecessors, (6251), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:57:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6456 transitions. [2021-12-17 18:57:02,435 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6456 transitions. Word has length 190 [2021-12-17 18:57:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:02,436 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6456 transitions. [2021-12-17 18:57:02,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6456 transitions. [2021-12-17 18:57:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:57:02,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:02,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:02,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 18:57:02,439 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash 110143426, now seen corresponding path program 1 times [2021-12-17 18:57:02,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:02,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717717054] [2021-12-17 18:57:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:02,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:02,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:02,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717717054] [2021-12-17 18:57:02,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717717054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:02,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:02,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:57:02,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687134106] [2021-12-17 18:57:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:02,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:57:02,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:57:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:02,583 INFO L87 Difference]: Start difference. First operand 3742 states and 6456 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:05,664 INFO L93 Difference]: Finished difference Result 8222 states and 13478 transitions. [2021-12-17 18:57:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 18:57:05,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:57:05,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:05,679 INFO L225 Difference]: With dead ends: 8222 [2021-12-17 18:57:05,679 INFO L226 Difference]: Without dead ends: 6622 [2021-12-17 18:57:05,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 18:57:05,686 INFO L933 BasicCegarLoop]: 4918 mSDtfsCounter, 6014 mSDsluCounter, 18293 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6034 SdHoareTripleChecker+Valid, 23211 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:05,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6034 Valid, 23211 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 18:57:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6622 states. [2021-12-17 18:57:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6622 to 5342. [2021-12-17 18:57:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5091 states have (on average 1.671380868198782) internal successors, (8509), 5113 states have internal predecessors, (8509), 182 states have call successors, (182), 49 states have call predecessors, (182), 67 states have return successors, (243), 187 states have call predecessors, (243), 180 states have call successors, (243) [2021-12-17 18:57:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8934 transitions. [2021-12-17 18:57:05,987 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8934 transitions. Word has length 190 [2021-12-17 18:57:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:05,987 INFO L470 AbstractCegarLoop]: Abstraction has 5342 states and 8934 transitions. [2021-12-17 18:57:05,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8934 transitions. [2021-12-17 18:57:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:57:05,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:05,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:05,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 18:57:05,990 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:05,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:05,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1677726396, now seen corresponding path program 1 times [2021-12-17 18:57:05,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:05,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374393879] [2021-12-17 18:57:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:05,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:06,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374393879] [2021-12-17 18:57:06,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374393879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:06,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:06,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:57:06,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468367461] [2021-12-17 18:57:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:06,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:57:06,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:57:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:57:06,120 INFO L87 Difference]: Start difference. First operand 5342 states and 8934 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:09,588 INFO L93 Difference]: Finished difference Result 14087 states and 22564 transitions. [2021-12-17 18:57:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:57:09,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:57:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:09,606 INFO L225 Difference]: With dead ends: 14087 [2021-12-17 18:57:09,606 INFO L226 Difference]: Without dead ends: 10888 [2021-12-17 18:57:09,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 18:57:09,614 INFO L933 BasicCegarLoop]: 5231 mSDtfsCounter, 6000 mSDsluCounter, 13245 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6046 SdHoareTripleChecker+Valid, 18476 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:09,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6046 Valid, 18476 Invalid, 2554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:57:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10888 states. [2021-12-17 18:57:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10888 to 8464. [2021-12-17 18:57:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 7970 states have (on average 1.6155583437892096) internal successors, (12876), 8019 states have internal predecessors, (12876), 358 states have call successors, (358), 97 states have call predecessors, (358), 134 states have return successors, (475), 355 states have call predecessors, (475), 356 states have call successors, (475) [2021-12-17 18:57:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 13709 transitions. [2021-12-17 18:57:10,157 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 13709 transitions. Word has length 190 [2021-12-17 18:57:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:10,157 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 13709 transitions. [2021-12-17 18:57:10,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 13709 transitions. [2021-12-17 18:57:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:57:10,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:10,169 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:10,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 18:57:10,170 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1020287586, now seen corresponding path program 1 times [2021-12-17 18:57:10,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:10,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134561099] [2021-12-17 18:57:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:10,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:57:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:57:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:57:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:57:10,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:10,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134561099] [2021-12-17 18:57:10,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134561099] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:57:10,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950491182] [2021-12-17 18:57:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:10,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:57:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:57:10,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:57:10,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 18:57:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:10,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:57:10,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:57:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 18:57:11,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:57:11,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950491182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:11,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:57:11,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:57:11,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416711116] [2021-12-17 18:57:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:11,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:57:11,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:57:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:11,150 INFO L87 Difference]: Start difference. First operand 8464 states and 13709 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:12,259 INFO L93 Difference]: Finished difference Result 21025 states and 33257 transitions. [2021-12-17 18:57:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:57:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:57:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:12,295 INFO L225 Difference]: With dead ends: 21025 [2021-12-17 18:57:12,296 INFO L226 Difference]: Without dead ends: 14704 [2021-12-17 18:57:12,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:12,317 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4473 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:12,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:57:12,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14704 states. [2021-12-17 18:57:13,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14704 to 14668. [2021-12-17 18:57:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14668 states, 13704 states have (on average 1.5774956217162872) internal successors, (21618), 13799 states have internal predecessors, (21618), 694 states have call successors, (694), 193 states have call predecessors, (694), 268 states have return successors, (923), 683 states have call predecessors, (923), 692 states have call successors, (923) [2021-12-17 18:57:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14668 states to 14668 states and 23235 transitions. [2021-12-17 18:57:13,406 INFO L78 Accepts]: Start accepts. Automaton has 14668 states and 23235 transitions. Word has length 309 [2021-12-17 18:57:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:13,406 INFO L470 AbstractCegarLoop]: Abstraction has 14668 states and 23235 transitions. [2021-12-17 18:57:13,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 14668 states and 23235 transitions. [2021-12-17 18:57:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:57:13,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:13,428 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:13,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 18:57:13,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-17 18:57:13,644 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1774320002, now seen corresponding path program 1 times [2021-12-17 18:57:13,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:13,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354170268] [2021-12-17 18:57:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:13,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:57:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:57:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:57:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:57:13,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354170268] [2021-12-17 18:57:13,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354170268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:57:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079693310] [2021-12-17 18:57:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:13,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:57:13,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:57:13,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:57:13,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 18:57:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:14,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:57:14,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:57:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-17 18:57:14,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:57:14,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079693310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:14,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:57:14,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:57:14,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757412366] [2021-12-17 18:57:14,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:14,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:57:14,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:57:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:14,526 INFO L87 Difference]: Start difference. First operand 14668 states and 23235 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:16,413 INFO L93 Difference]: Finished difference Result 39557 states and 61947 transitions. [2021-12-17 18:57:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:57:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:57:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:16,478 INFO L225 Difference]: With dead ends: 39557 [2021-12-17 18:57:16,478 INFO L226 Difference]: Without dead ends: 27032 [2021-12-17 18:57:16,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:16,510 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4461 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:16,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:57:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27032 states. [2021-12-17 18:57:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27032 to 26964. [2021-12-17 18:57:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26964 states, 25076 states have (on average 1.5535970649226352) internal successors, (38958), 25263 states have internal predecessors, (38958), 1350 states have call successors, (1350), 385 states have call predecessors, (1350), 536 states have return successors, (1803), 1323 states have call predecessors, (1803), 1348 states have call successors, (1803) [2021-12-17 18:57:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26964 states to 26964 states and 42111 transitions. [2021-12-17 18:57:18,777 INFO L78 Accepts]: Start accepts. Automaton has 26964 states and 42111 transitions. Word has length 309 [2021-12-17 18:57:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:18,777 INFO L470 AbstractCegarLoop]: Abstraction has 26964 states and 42111 transitions. [2021-12-17 18:57:18,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:18,778 INFO L276 IsEmpty]: Start isEmpty. Operand 26964 states and 42111 transitions. [2021-12-17 18:57:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:57:18,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:18,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:18,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 18:57:19,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-17 18:57:19,028 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:19,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash -170833758, now seen corresponding path program 1 times [2021-12-17 18:57:19,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:19,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061607399] [2021-12-17 18:57:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:19,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:57:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:57:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:57:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:57:19,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:19,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061607399] [2021-12-17 18:57:19,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061607399] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:57:19,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352594076] [2021-12-17 18:57:19,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:19,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:57:19,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:57:19,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:57:19,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 18:57:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:19,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:57:19,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:57:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-17 18:57:19,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:57:19,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352594076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:19,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:57:19,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:57:19,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687479867] [2021-12-17 18:57:19,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:19,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:57:19,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:57:19,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:19,997 INFO L87 Difference]: Start difference. First operand 26964 states and 42111 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:23,870 INFO L93 Difference]: Finished difference Result 76285 states and 118783 transitions. [2021-12-17 18:57:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:57:23,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:57:23,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:24,007 INFO L225 Difference]: With dead ends: 76285 [2021-12-17 18:57:24,007 INFO L226 Difference]: Without dead ends: 51464 [2021-12-17 18:57:24,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:24,064 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4497 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:24,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4497 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:57:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51464 states. [2021-12-17 18:57:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51464 to 51332. [2021-12-17 18:57:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51332 states, 47628 states have (on average 1.5400604686318973) internal successors, (73350), 47999 states have internal predecessors, (73350), 2630 states have call successors, (2630), 769 states have call predecessors, (2630), 1072 states have return successors, (3531), 2571 states have call predecessors, (3531), 2628 states have call successors, (3531) [2021-12-17 18:57:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51332 states to 51332 states and 79511 transitions. [2021-12-17 18:57:28,945 INFO L78 Accepts]: Start accepts. Automaton has 51332 states and 79511 transitions. Word has length 309 [2021-12-17 18:57:28,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:28,945 INFO L470 AbstractCegarLoop]: Abstraction has 51332 states and 79511 transitions. [2021-12-17 18:57:28,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 51332 states and 79511 transitions. [2021-12-17 18:57:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:57:29,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:29,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:29,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 18:57:29,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:57:29,202 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash 631211970, now seen corresponding path program 1 times [2021-12-17 18:57:29,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:29,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112291672] [2021-12-17 18:57:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:29,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:57:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:57:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:57:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:57:29,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:29,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112291672] [2021-12-17 18:57:29,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112291672] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:57:29,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007319905] [2021-12-17 18:57:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:29,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:57:29,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:57:29,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:57:29,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 18:57:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:57:29,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:57:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-17 18:57:30,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:57:30,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007319905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:30,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:57:30,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:57:30,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772422614] [2021-12-17 18:57:30,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:30,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:57:30,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:30,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:57:30,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:30,053 INFO L87 Difference]: Start difference. First operand 51332 states and 79511 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:38,348 INFO L93 Difference]: Finished difference Result 149069 states and 231367 transitions. [2021-12-17 18:57:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:57:38,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:57:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:38,652 INFO L225 Difference]: With dead ends: 149069 [2021-12-17 18:57:38,652 INFO L226 Difference]: Without dead ends: 99880 [2021-12-17 18:57:38,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:38,950 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4485 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:38,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4485 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:57:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99880 states. [2021-12-17 18:57:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99880 to 99620. [2021-12-17 18:57:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99620 states, 92348 states have (on average 1.5328756443019882) internal successors, (141558), 93087 states have internal predecessors, (141558), 5126 states have call successors, (5126), 1537 states have call predecessors, (5126), 2144 states have return successors, (6923), 5003 states have call predecessors, (6923), 5124 states have call successors, (6923) [2021-12-17 18:57:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99620 states to 99620 states and 153607 transitions. [2021-12-17 18:57:47,540 INFO L78 Accepts]: Start accepts. Automaton has 99620 states and 153607 transitions. Word has length 309 [2021-12-17 18:57:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:47,540 INFO L470 AbstractCegarLoop]: Abstraction has 99620 states and 153607 transitions. [2021-12-17 18:57:47,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:57:47,541 INFO L276 IsEmpty]: Start isEmpty. Operand 99620 states and 153607 transitions. [2021-12-17 18:57:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:57:47,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:47,643 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:47,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 18:57:47,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:57:47,844 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:47,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1568966942, now seen corresponding path program 1 times [2021-12-17 18:57:47,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:47,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886237784] [2021-12-17 18:57:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:47,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:57:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:57:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:57:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:57:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:57:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:57:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:57:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:57:48,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:48,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886237784] [2021-12-17 18:57:48,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886237784] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:57:48,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806294163] [2021-12-17 18:57:48,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:48,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:57:48,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:57:48,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:57:48,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 18:57:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:48,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:57:48,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:57:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-17 18:57:48,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:57:48,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806294163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:48,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:57:48,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:57:48,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093082072] [2021-12-17 18:57:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:48,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:57:48,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:48,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:57:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:48,670 INFO L87 Difference]: Start difference. First operand 99620 states and 153607 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)