/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:26:43,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:26:43,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:26:43,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:26:43,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:26:43,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:26:43,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:26:43,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:26:43,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:26:43,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:26:43,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:26:43,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:26:43,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:26:43,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:26:43,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:26:43,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:26:43,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:26:43,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:26:43,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:26:43,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:26:43,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:26:43,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:26:43,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:26:43,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:26:43,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:26:43,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:26:43,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:26:43,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:26:43,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:26:43,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:26:43,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:26:43,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:26:43,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:26:43,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:26:43,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:26:43,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:26:43,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:26:43,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:26:43,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:26:43,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:26:43,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:26:43,413 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:26:43,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:26:43,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:26:43,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:26:43,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:26:43,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:26:43,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:26:43,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:26:43,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:26:43,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:26:43,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:26:43,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:26:43,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:26:43,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:26:43,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:26:43,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:26:43,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:26:43,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:26:43,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:26:43,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:26:43,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:26:43,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:26:43,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:26:43,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:26:43,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:26:43,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:26:43,910 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:26:43,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:26:44,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd468677d/cdc81da28b63458a9b19f599bb5d3b8b/FLAGf4b32d392 [2020-12-22 10:26:45,102 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:26:45,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:26:45,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd468677d/cdc81da28b63458a9b19f599bb5d3b8b/FLAGf4b32d392 [2020-12-22 10:26:45,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd468677d/cdc81da28b63458a9b19f599bb5d3b8b [2020-12-22 10:26:45,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:26:45,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:26:45,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:26:45,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:26:45,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:26:45,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:26:45" (1/1) ... [2020-12-22 10:26:45,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658866d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:45, skipping insertion in model container [2020-12-22 10:26:45,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:26:45" (1/1) ... [2020-12-22 10:26:45,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:26:45,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:26:46,209 WARN L226 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/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[26949,26962] [2020-12-22 10:26:46,306 WARN L226 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/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[33767,33780] [2020-12-22 10:26:47,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:26:47,235 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:26:47,319 WARN L226 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/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[26949,26962] [2020-12-22 10:26:47,331 WARN L226 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/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[33767,33780] [2020-12-22 10:26:47,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:26:48,001 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:26:48,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48 WrapperNode [2020-12-22 10:26:48,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:26:48,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:26:48,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:26:48,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:26:48,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:26:48,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:26:48,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:26:48,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:26:48,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:48,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... [2020-12-22 10:26:49,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:26:49,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:26:49,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:26:49,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:26:49,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:26:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:26:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:26:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:26:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:26:55,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:26:55,129 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2020-12-22 10:26:55,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:26:55 BoogieIcfgContainer [2020-12-22 10:26:55,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:26:55,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:26:55,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:26:55,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:26:55,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:26:45" (1/3) ... [2020-12-22 10:26:55,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd59e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:26:55, skipping insertion in model container [2020-12-22 10:26:55,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:48" (2/3) ... [2020-12-22 10:26:55,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd59e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:26:55, skipping insertion in model container [2020-12-22 10:26:55,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:26:55" (3/3) ... [2020-12-22 10:26:55,142 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:26:55,149 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:26:55,164 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:26:55,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:26:55,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:26:55,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:26:55,218 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:26:55,218 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:26:55,218 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:26:55,218 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:26:55,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:26:55,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:26:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states. [2020-12-22 10:26:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:26:55,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:26:55,266 INFO L422 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] [2020-12-22 10:26:55,267 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:26:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:26:55,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2020-12-22 10:26:55,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:26:55,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328758216] [2020-12-22 10:26:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:26:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:26:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:26:55,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328758216] [2020-12-22 10:26:55,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:26:55,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:26:55,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305206404] [2020-12-22 10:26:55,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:26:55,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:26:55,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:26:55,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:26:55,634 INFO L87 Difference]: Start difference. First operand 962 states. Second operand 2 states. [2020-12-22 10:26:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:26:55,725 INFO L93 Difference]: Finished difference Result 1855 states and 3508 transitions. [2020-12-22 10:26:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:26:55,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-12-22 10:26:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:26:55,755 INFO L225 Difference]: With dead ends: 1855 [2020-12-22 10:26:55,756 INFO L226 Difference]: Without dead ends: 896 [2020-12-22 10:26:55,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:26:55,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-12-22 10:26:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 896. [2020-12-22 10:26:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-12-22 10:26:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1687 transitions. [2020-12-22 10:26:55,881 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1687 transitions. Word has length 46 [2020-12-22 10:26:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:26:55,881 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1687 transitions. [2020-12-22 10:26:55,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:26:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1687 transitions. [2020-12-22 10:26:55,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:26:55,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:26:55,885 INFO L422 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] [2020-12-22 10:26:55,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:26:55,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:26:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:26:55,886 INFO L82 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2020-12-22 10:26:55,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:26:55,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632868260] [2020-12-22 10:26:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:26:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:26:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:26:56,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632868260] [2020-12-22 10:26:56,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:26:56,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:26:56,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139278038] [2020-12-22 10:26:56,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:26:56,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:26:56,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:26:56,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:26:56,066 INFO L87 Difference]: Start difference. First operand 896 states and 1687 transitions. Second operand 5 states. [2020-12-22 10:26:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:26:56,258 INFO L93 Difference]: Finished difference Result 975 states and 1811 transitions. [2020-12-22 10:26:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:26:56,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 10:26:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:26:56,265 INFO L225 Difference]: With dead ends: 975 [2020-12-22 10:26:56,266 INFO L226 Difference]: Without dead ends: 896 [2020-12-22 10:26:56,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:26:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-12-22 10:26:56,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 896. [2020-12-22 10:26:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-12-22 10:26:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1626 transitions. [2020-12-22 10:26:56,302 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1626 transitions. Word has length 46 [2020-12-22 10:26:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:26:56,302 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1626 transitions. [2020-12-22 10:26:56,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:26:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1626 transitions. [2020-12-22 10:26:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 10:26:56,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:26:56,305 INFO L422 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] [2020-12-22 10:26:56,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:26:56,305 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:26:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:26:56,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1721911109, now seen corresponding path program 1 times [2020-12-22 10:26:56,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:26:56,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684573371] [2020-12-22 10:26:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:26:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:26:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:26:56,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684573371] [2020-12-22 10:26:56,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:26:56,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:26:56,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17215856] [2020-12-22 10:26:56,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:26:56,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:26:56,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:26:56,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:26:56,518 INFO L87 Difference]: Start difference. First operand 896 states and 1626 transitions. Second operand 4 states. [2020-12-22 10:27:07,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:07,669 INFO L93 Difference]: Finished difference Result 3151 states and 5935 transitions. [2020-12-22 10:27:07,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:27:07,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 10:27:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:07,684 INFO L225 Difference]: With dead ends: 3151 [2020-12-22 10:27:07,684 INFO L226 Difference]: Without dead ends: 2398 [2020-12-22 10:27:07,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:27:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2020-12-22 10:27:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2398. [2020-12-22 10:27:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2020-12-22 10:27:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3602 transitions. [2020-12-22 10:27:07,744 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3602 transitions. Word has length 61 [2020-12-22 10:27:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:07,745 INFO L481 AbstractCegarLoop]: Abstraction has 2398 states and 3602 transitions. [2020-12-22 10:27:07,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:27:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3602 transitions. [2020-12-22 10:27:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:07,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:07,749 INFO L422 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] [2020-12-22 10:27:07,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:27:07,750 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:07,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:07,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2020-12-22 10:27:07,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:07,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525931216] [2020-12-22 10:27:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:07,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525931216] [2020-12-22 10:27:07,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:07,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:07,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932204205] [2020-12-22 10:27:07,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:07,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:07,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:07,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:07,957 INFO L87 Difference]: Start difference. First operand 2398 states and 3602 transitions. Second operand 3 states. [2020-12-22 10:27:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:08,009 INFO L93 Difference]: Finished difference Result 2542 states and 3832 transitions. [2020-12-22 10:27:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:08,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:08,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:08,026 INFO L225 Difference]: With dead ends: 2542 [2020-12-22 10:27:08,027 INFO L226 Difference]: Without dead ends: 2467 [2020-12-22 10:27:08,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2020-12-22 10:27:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2465. [2020-12-22 10:27:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 10:27:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3710 transitions. [2020-12-22 10:27:08,087 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3710 transitions. Word has length 106 [2020-12-22 10:27:08,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:08,089 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3710 transitions. [2020-12-22 10:27:08,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3710 transitions. [2020-12-22 10:27:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:08,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:08,091 INFO L422 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] [2020-12-22 10:27:08,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:27:08,092 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:08,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:08,092 INFO L82 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2020-12-22 10:27:08,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:08,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262242863] [2020-12-22 10:27:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:08,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262242863] [2020-12-22 10:27:08,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:08,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:08,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939427112] [2020-12-22 10:27:08,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:08,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:08,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:08,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:08,253 INFO L87 Difference]: Start difference. First operand 2465 states and 3710 transitions. Second operand 3 states. [2020-12-22 10:27:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:08,317 INFO L93 Difference]: Finished difference Result 2737 states and 4146 transitions. [2020-12-22 10:27:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:08,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:08,333 INFO L225 Difference]: With dead ends: 2737 [2020-12-22 10:27:08,333 INFO L226 Difference]: Without dead ends: 2595 [2020-12-22 10:27:08,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2020-12-22 10:27:08,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2593. [2020-12-22 10:27:08,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2593 states. [2020-12-22 10:27:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3915 transitions. [2020-12-22 10:27:08,395 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3915 transitions. Word has length 106 [2020-12-22 10:27:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:08,396 INFO L481 AbstractCegarLoop]: Abstraction has 2593 states and 3915 transitions. [2020-12-22 10:27:08,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3915 transitions. [2020-12-22 10:27:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:08,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:08,404 INFO L422 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] [2020-12-22 10:27:08,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:27:08,405 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:08,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2020-12-22 10:27:08,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:08,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577880259] [2020-12-22 10:27:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:08,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577880259] [2020-12-22 10:27:08,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:08,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:08,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129178939] [2020-12-22 10:27:08,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:08,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:08,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:08,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:08,569 INFO L87 Difference]: Start difference. First operand 2593 states and 3915 transitions. Second operand 3 states. [2020-12-22 10:27:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:08,639 INFO L93 Difference]: Finished difference Result 3109 states and 4741 transitions. [2020-12-22 10:27:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:08,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:08,659 INFO L225 Difference]: With dead ends: 3109 [2020-12-22 10:27:08,660 INFO L226 Difference]: Without dead ends: 2839 [2020-12-22 10:27:08,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2020-12-22 10:27:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2837. [2020-12-22 10:27:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2837 states. [2020-12-22 10:27:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 4303 transitions. [2020-12-22 10:27:08,756 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 4303 transitions. Word has length 106 [2020-12-22 10:27:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:08,758 INFO L481 AbstractCegarLoop]: Abstraction has 2837 states and 4303 transitions. [2020-12-22 10:27:08,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 4303 transitions. [2020-12-22 10:27:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:08,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:08,760 INFO L422 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] [2020-12-22 10:27:08,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:27:08,761 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2020-12-22 10:27:08,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:08,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928350238] [2020-12-22 10:27:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:08,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928350238] [2020-12-22 10:27:08,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:08,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:08,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379907527] [2020-12-22 10:27:08,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:08,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:08,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:08,906 INFO L87 Difference]: Start difference. First operand 2837 states and 4303 transitions. Second operand 3 states. [2020-12-22 10:27:08,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:08,976 INFO L93 Difference]: Finished difference Result 3817 states and 5865 transitions. [2020-12-22 10:27:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:08,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:08,993 INFO L225 Difference]: With dead ends: 3817 [2020-12-22 10:27:08,994 INFO L226 Difference]: Without dead ends: 3303 [2020-12-22 10:27:09,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2020-12-22 10:27:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 3301. [2020-12-22 10:27:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3301 states. [2020-12-22 10:27:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 5035 transitions. [2020-12-22 10:27:09,095 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 5035 transitions. Word has length 106 [2020-12-22 10:27:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:09,096 INFO L481 AbstractCegarLoop]: Abstraction has 3301 states and 5035 transitions. [2020-12-22 10:27:09,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 5035 transitions. [2020-12-22 10:27:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:09,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:09,098 INFO L422 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] [2020-12-22 10:27:09,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:27:09,098 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:09,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:09,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2020-12-22 10:27:09,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:09,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278105027] [2020-12-22 10:27:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:09,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278105027] [2020-12-22 10:27:09,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:09,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:27:09,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711099456] [2020-12-22 10:27:09,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:27:09,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:09,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:27:09,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:27:09,303 INFO L87 Difference]: Start difference. First operand 3301 states and 5035 transitions. Second operand 10 states. [2020-12-22 10:27:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:10,534 INFO L93 Difference]: Finished difference Result 18949 states and 29883 transitions. [2020-12-22 10:27:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 10:27:10,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-12-22 10:27:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:10,627 INFO L225 Difference]: With dead ends: 18949 [2020-12-22 10:27:10,628 INFO L226 Difference]: Without dead ends: 17971 [2020-12-22 10:27:10,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-12-22 10:27:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17971 states. [2020-12-22 10:27:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17971 to 4277. [2020-12-22 10:27:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4277 states. [2020-12-22 10:27:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6555 transitions. [2020-12-22 10:27:10,977 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6555 transitions. Word has length 106 [2020-12-22 10:27:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:10,977 INFO L481 AbstractCegarLoop]: Abstraction has 4277 states and 6555 transitions. [2020-12-22 10:27:10,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:27:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6555 transitions. [2020-12-22 10:27:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:10,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:10,979 INFO L422 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] [2020-12-22 10:27:10,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:27:10,980 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2020-12-22 10:27:10,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:10,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338351382] [2020-12-22 10:27:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:11,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338351382] [2020-12-22 10:27:11,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:11,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:11,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712567485] [2020-12-22 10:27:11,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:11,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:11,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:11,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:11,101 INFO L87 Difference]: Start difference. First operand 4277 states and 6555 transitions. Second operand 3 states. [2020-12-22 10:27:11,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:11,330 INFO L93 Difference]: Finished difference Result 7171 states and 11103 transitions. [2020-12-22 10:27:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:11,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:11,343 INFO L225 Difference]: With dead ends: 7171 [2020-12-22 10:27:11,343 INFO L226 Difference]: Without dead ends: 5217 [2020-12-22 10:27:11,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2020-12-22 10:27:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5215. [2020-12-22 10:27:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5215 states. [2020-12-22 10:27:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8005 transitions. [2020-12-22 10:27:11,605 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8005 transitions. Word has length 108 [2020-12-22 10:27:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:11,605 INFO L481 AbstractCegarLoop]: Abstraction has 5215 states and 8005 transitions. [2020-12-22 10:27:11,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8005 transitions. [2020-12-22 10:27:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:11,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:11,607 INFO L422 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] [2020-12-22 10:27:11,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:27:11,607 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:11,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2020-12-22 10:27:11,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:11,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577721058] [2020-12-22 10:27:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:12,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577721058] [2020-12-22 10:27:12,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:12,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:27:12,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847448347] [2020-12-22 10:27:12,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:27:12,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:27:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:27:12,322 INFO L87 Difference]: Start difference. First operand 5215 states and 8005 transitions. Second operand 10 states. [2020-12-22 10:27:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:13,174 INFO L93 Difference]: Finished difference Result 8107 states and 12527 transitions. [2020-12-22 10:27:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:27:13,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-12-22 10:27:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:13,187 INFO L225 Difference]: With dead ends: 8107 [2020-12-22 10:27:13,188 INFO L226 Difference]: Without dead ends: 5217 [2020-12-22 10:27:13,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:27:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2020-12-22 10:27:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5215. [2020-12-22 10:27:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5215 states. [2020-12-22 10:27:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 7981 transitions. [2020-12-22 10:27:13,498 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 7981 transitions. Word has length 108 [2020-12-22 10:27:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:13,499 INFO L481 AbstractCegarLoop]: Abstraction has 5215 states and 7981 transitions. [2020-12-22 10:27:13,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:27:13,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 7981 transitions. [2020-12-22 10:27:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:13,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:13,501 INFO L422 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] [2020-12-22 10:27:13,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:27:13,501 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:13,502 INFO L82 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2020-12-22 10:27:13,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:13,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409492042] [2020-12-22 10:27:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:13,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409492042] [2020-12-22 10:27:13,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:13,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:13,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060459451] [2020-12-22 10:27:13,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:13,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:13,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:13,586 INFO L87 Difference]: Start difference. First operand 5215 states and 7981 transitions. Second operand 3 states. [2020-12-22 10:27:13,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:13,943 INFO L93 Difference]: Finished difference Result 10707 states and 16495 transitions. [2020-12-22 10:27:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:13,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:13,963 INFO L225 Difference]: With dead ends: 10707 [2020-12-22 10:27:13,963 INFO L226 Difference]: Without dead ends: 7817 [2020-12-22 10:27:13,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7817 states. [2020-12-22 10:27:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 7815. [2020-12-22 10:27:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7815 states. [2020-12-22 10:27:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 11949 transitions. [2020-12-22 10:27:14,503 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 11949 transitions. Word has length 108 [2020-12-22 10:27:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:14,503 INFO L481 AbstractCegarLoop]: Abstraction has 7815 states and 11949 transitions. [2020-12-22 10:27:14,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 11949 transitions. [2020-12-22 10:27:14,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:14,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:14,505 INFO L422 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] [2020-12-22 10:27:14,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:27:14,507 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2020-12-22 10:27:14,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:14,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730100646] [2020-12-22 10:27:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:14,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730100646] [2020-12-22 10:27:14,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:14,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:14,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285522790] [2020-12-22 10:27:14,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:14,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:14,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:14,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:14,601 INFO L87 Difference]: Start difference. First operand 7815 states and 11949 transitions. Second operand 3 states. [2020-12-22 10:27:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:15,266 INFO L93 Difference]: Finished difference Result 18219 states and 27919 transitions. [2020-12-22 10:27:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:15,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:15,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:15,296 INFO L225 Difference]: With dead ends: 18219 [2020-12-22 10:27:15,296 INFO L226 Difference]: Without dead ends: 12729 [2020-12-22 10:27:15,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12729 states. [2020-12-22 10:27:16,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12729 to 12727. [2020-12-22 10:27:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12727 states. [2020-12-22 10:27:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 19357 transitions. [2020-12-22 10:27:16,324 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 19357 transitions. Word has length 108 [2020-12-22 10:27:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:16,325 INFO L481 AbstractCegarLoop]: Abstraction has 12727 states and 19357 transitions. [2020-12-22 10:27:16,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 19357 transitions. [2020-12-22 10:27:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:16,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:16,327 INFO L422 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] [2020-12-22 10:27:16,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:27:16,327 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:16,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2020-12-22 10:27:16,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:16,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944519514] [2020-12-22 10:27:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:16,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944519514] [2020-12-22 10:27:16,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:16,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:16,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99374819] [2020-12-22 10:27:16,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:16,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:16,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:16,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:16,424 INFO L87 Difference]: Start difference. First operand 12727 states and 19357 transitions. Second operand 3 states. [2020-12-22 10:27:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:17,587 INFO L93 Difference]: Finished difference Result 32379 states and 49183 transitions. [2020-12-22 10:27:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:17,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:17,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:17,642 INFO L225 Difference]: With dead ends: 32379 [2020-12-22 10:27:17,642 INFO L226 Difference]: Without dead ends: 21977 [2020-12-22 10:27:17,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21977 states. [2020-12-22 10:27:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21977 to 21975. [2020-12-22 10:27:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21975 states. [2020-12-22 10:27:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21975 states to 21975 states and 33117 transitions. [2020-12-22 10:27:19,409 INFO L78 Accepts]: Start accepts. Automaton has 21975 states and 33117 transitions. Word has length 108 [2020-12-22 10:27:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:19,410 INFO L481 AbstractCegarLoop]: Abstraction has 21975 states and 33117 transitions. [2020-12-22 10:27:19,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 21975 states and 33117 transitions. [2020-12-22 10:27:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:19,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:19,412 INFO L422 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] [2020-12-22 10:27:19,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:27:19,413 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:19,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2020-12-22 10:27:19,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:19,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54744452] [2020-12-22 10:27:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:19,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54744452] [2020-12-22 10:27:19,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:19,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:19,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393913863] [2020-12-22 10:27:19,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:19,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:19,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:19,528 INFO L87 Difference]: Start difference. First operand 21975 states and 33117 transitions. Second operand 3 states. [2020-12-22 10:27:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:21,428 INFO L93 Difference]: Finished difference Result 58971 states and 88543 transitions. [2020-12-22 10:27:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:21,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:21,517 INFO L225 Difference]: With dead ends: 58971 [2020-12-22 10:27:21,517 INFO L226 Difference]: Without dead ends: 39321 [2020-12-22 10:27:21,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39321 states. [2020-12-22 10:27:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39321 to 39319. [2020-12-22 10:27:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39319 states. [2020-12-22 10:27:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39319 states to 39319 states and 58525 transitions. [2020-12-22 10:27:24,075 INFO L78 Accepts]: Start accepts. Automaton has 39319 states and 58525 transitions. Word has length 108 [2020-12-22 10:27:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:24,076 INFO L481 AbstractCegarLoop]: Abstraction has 39319 states and 58525 transitions. [2020-12-22 10:27:24,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 39319 states and 58525 transitions. [2020-12-22 10:27:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:27:24,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:24,077 INFO L422 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] [2020-12-22 10:27:24,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:27:24,078 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:24,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:24,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2020-12-22 10:27:24,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:24,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982202660] [2020-12-22 10:27:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:24,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982202660] [2020-12-22 10:27:24,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:24,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:27:24,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951059318] [2020-12-22 10:27:24,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:27:24,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:24,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:27:24,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:27:24,239 INFO L87 Difference]: Start difference. First operand 39319 states and 58525 transitions. Second operand 8 states. [2020-12-22 10:27:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:29,203 INFO L93 Difference]: Finished difference Result 70974 states and 104590 transitions. [2020-12-22 10:27:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:27:29,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-12-22 10:27:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:29,316 INFO L225 Difference]: With dead ends: 70974 [2020-12-22 10:27:29,316 INFO L226 Difference]: Without dead ends: 70972 [2020-12-22 10:27:29,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:27:29,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70972 states. [2020-12-22 10:27:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70972 to 40855. [2020-12-22 10:27:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40855 states. [2020-12-22 10:27:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40855 states to 40855 states and 59933 transitions. [2020-12-22 10:27:32,359 INFO L78 Accepts]: Start accepts. Automaton has 40855 states and 59933 transitions. Word has length 109 [2020-12-22 10:27:32,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:32,359 INFO L481 AbstractCegarLoop]: Abstraction has 40855 states and 59933 transitions. [2020-12-22 10:27:32,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:27:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 40855 states and 59933 transitions. [2020-12-22 10:27:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 10:27:32,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:32,364 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:27:32,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:27:32,365 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:32,366 INFO L82 PathProgramCache]: Analyzing trace with hash -658221035, now seen corresponding path program 1 times [2020-12-22 10:27:32,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:32,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487490993] [2020-12-22 10:27:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:27:32,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487490993] [2020-12-22 10:27:32,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:32,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:32,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597571785] [2020-12-22 10:27:32,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:27:32,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:32,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:27:32,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:27:32,564 INFO L87 Difference]: Start difference. First operand 40855 states and 59933 transitions. Second operand 4 states. [2020-12-22 10:27:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:43,597 INFO L93 Difference]: Finished difference Result 44649 states and 66038 transitions. [2020-12-22 10:27:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:27:43,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-12-22 10:27:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:43,705 INFO L225 Difference]: With dead ends: 44649 [2020-12-22 10:27:43,705 INFO L226 Difference]: Without dead ends: 42357 [2020-12-22 10:27:43,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:27:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42357 states. [2020-12-22 10:27:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42357 to 42357. [2020-12-22 10:27:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42357 states. [2020-12-22 10:27:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42357 states to 42357 states and 61518 transitions. [2020-12-22 10:27:46,645 INFO L78 Accepts]: Start accepts. Automaton has 42357 states and 61518 transitions. Word has length 132 [2020-12-22 10:27:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:46,646 INFO L481 AbstractCegarLoop]: Abstraction has 42357 states and 61518 transitions. [2020-12-22 10:27:46,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:27:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 42357 states and 61518 transitions. [2020-12-22 10:27:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:27:46,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:46,673 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:27:46,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:27:46,674 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash 949310851, now seen corresponding path program 1 times [2020-12-22 10:27:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:46,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586091737] [2020-12-22 10:27:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 10:27:46,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586091737] [2020-12-22 10:27:46,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:46,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:27:46,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006807570] [2020-12-22 10:27:46,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:27:46,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:46,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:27:46,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:27:46,927 INFO L87 Difference]: Start difference. First operand 42357 states and 61518 transitions. Second operand 10 states. [2020-12-22 10:28:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:28:05,456 INFO L93 Difference]: Finished difference Result 358023 states and 523543 transitions. [2020-12-22 10:28:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:28:05,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:28:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:28:06,038 INFO L225 Difference]: With dead ends: 358023 [2020-12-22 10:28:06,038 INFO L226 Difference]: Without dead ends: 319493 [2020-12-22 10:28:06,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:28:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319493 states. [2020-12-22 10:28:13,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319493 to 80885. [2020-12-22 10:28:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80885 states. [2020-12-22 10:28:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80885 states to 80885 states and 117582 transitions. [2020-12-22 10:28:14,118 INFO L78 Accepts]: Start accepts. Automaton has 80885 states and 117582 transitions. Word has length 148 [2020-12-22 10:28:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:28:14,118 INFO L481 AbstractCegarLoop]: Abstraction has 80885 states and 117582 transitions. [2020-12-22 10:28:14,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:28:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 80885 states and 117582 transitions. [2020-12-22 10:28:14,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:28:14,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:28:14,154 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:28:14,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:28:14,154 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:28:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:28:14,155 INFO L82 PathProgramCache]: Analyzing trace with hash 978833069, now seen corresponding path program 1 times [2020-12-22 10:28:14,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:28:14,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710310373] [2020-12-22 10:28:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:28:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:28:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 10:28:14,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710310373] [2020-12-22 10:28:14,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:28:14,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:28:14,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869695586] [2020-12-22 10:28:14,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:28:14,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:28:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:28:14,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:28:14,408 INFO L87 Difference]: Start difference. First operand 80885 states and 117582 transitions. Second operand 10 states. [2020-12-22 10:28:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:28:37,816 INFO L93 Difference]: Finished difference Result 396551 states and 579607 transitions. [2020-12-22 10:28:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:28:37,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:28:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:28:38,381 INFO L225 Difference]: With dead ends: 396551 [2020-12-22 10:28:38,381 INFO L226 Difference]: Without dead ends: 358021 [2020-12-22 10:28:38,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:28:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358021 states. [2020-12-22 10:28:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358021 to 138741. [2020-12-22 10:28:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138741 states. [2020-12-22 10:28:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138741 states to 138741 states and 201358 transitions. [2020-12-22 10:28:51,477 INFO L78 Accepts]: Start accepts. Automaton has 138741 states and 201358 transitions. Word has length 148 [2020-12-22 10:28:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:28:51,477 INFO L481 AbstractCegarLoop]: Abstraction has 138741 states and 201358 transitions. [2020-12-22 10:28:51,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:28:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 138741 states and 201358 transitions. [2020-12-22 10:28:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:28:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:28:51,535 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:28:51,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:28:51,535 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:28:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:28:51,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1252520781, now seen corresponding path program 1 times [2020-12-22 10:28:51,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:28:51,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074492007] [2020-12-22 10:28:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:28:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:28:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:28:51,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074492007] [2020-12-22 10:28:51,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:28:51,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:28:51,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307324786] [2020-12-22 10:28:51,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:28:51,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:28:51,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:28:51,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:28:51,796 INFO L87 Difference]: Start difference. First operand 138741 states and 201358 transitions. Second operand 10 states. [2020-12-22 10:29:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:29:19,885 INFO L93 Difference]: Finished difference Result 435079 states and 635671 transitions. [2020-12-22 10:29:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:29:19,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:29:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:29:20,561 INFO L225 Difference]: With dead ends: 435079 [2020-12-22 10:29:20,561 INFO L226 Difference]: Without dead ends: 396549 [2020-12-22 10:29:20,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:29:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396549 states. [2020-12-22 10:29:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396549 to 177269. [2020-12-22 10:29:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177269 states. [2020-12-22 10:29:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177269 states to 177269 states and 257422 transitions. [2020-12-22 10:29:36,907 INFO L78 Accepts]: Start accepts. Automaton has 177269 states and 257422 transitions. Word has length 148 [2020-12-22 10:29:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:29:36,908 INFO L481 AbstractCegarLoop]: Abstraction has 177269 states and 257422 transitions. [2020-12-22 10:29:36,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:29:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 177269 states and 257422 transitions.