/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:38:11,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:38:11,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:38:11,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:38:11,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:38:11,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:38:11,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:38:11,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:38:11,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:38:11,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:38:11,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:38:11,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:38:11,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:38:11,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:38:11,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:38:11,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:38:11,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:38:11,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:38:11,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:38:11,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:38:11,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:38:11,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:38:11,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:38:11,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:38:11,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:38:11,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:38:11,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:38:11,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:38:11,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:38:11,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:38:11,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:38:11,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:38:11,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:38:11,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:38:11,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:38:11,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:38:11,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:38:11,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:38:11,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:38:11,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:38:11,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:38:11,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:38:11,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:38:11,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:38:11,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:38:11,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:38:11,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:38:11,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:38:11,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:38:11,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:38:11,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:38:11,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:38:11,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:38:11,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:38:11,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:38:11,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:38:11,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:38:11,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:38:11,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:38:11,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:38:11,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:38:11,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:38:11,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:38:11,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:38:11,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:38:11,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:38:11,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:38:11,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:38:11,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:38:11,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:38:11,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:38:11,487 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:38:11,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:38:11,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:38:11,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:38:11,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:38:11,958 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:38:11,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-10-27 15:38:12,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f33567899/c9cc499b421e4231a6eb03d0b2e02702/FLAG1ece633d6 [2020-10-27 15:38:12,943 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:38:12,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-10-27 15:38:12,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f33567899/c9cc499b421e4231a6eb03d0b2e02702/FLAG1ece633d6 [2020-10-27 15:38:13,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f33567899/c9cc499b421e4231a6eb03d0b2e02702 [2020-10-27 15:38:13,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:38:13,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:38:13,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:38:13,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:38:13,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:38:13,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:13,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b3ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13, skipping insertion in model container [2020-10-27 15:38:13,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:13,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:38:13,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:38:13,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:38:13,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:38:13,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:38:13,896 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:38:13,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13 WrapperNode [2020-10-27 15:38:13,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:38:13,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:38:13,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:38:13,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:38:13,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:13,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:13,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:13,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:13,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:14,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:14,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... [2020-10-27 15:38:14,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:38:14,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:38:14,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:38:14,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:38:14,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-27 15:38:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:38:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:38:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:38:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:38:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:38:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:38:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:38:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:38:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:38:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:38:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:38:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:38:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:38:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:38:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:38:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:38:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:38:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:38:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:38:15,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:38:15,583 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:38:15,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:38:15 BoogieIcfgContainer [2020-10-27 15:38:15,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:38:15,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:38:15,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:38:15,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:38:15,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:38:13" (1/3) ... [2020-10-27 15:38:15,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b88652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:38:15, skipping insertion in model container [2020-10-27 15:38:15,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:38:13" (2/3) ... [2020-10-27 15:38:15,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b88652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:38:15, skipping insertion in model container [2020-10-27 15:38:15,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:38:15" (3/3) ... [2020-10-27 15:38:15,601 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-10-27 15:38:15,615 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:38:15,621 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:38:15,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:38:15,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:38:15,669 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:38:15,670 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:38:15,670 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:38:15,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:38:15,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:38:15,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:38:15,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:38:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-10-27 15:38:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 15:38:15,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:15,710 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] [2020-10-27 15:38:15,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:15,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1257700845, now seen corresponding path program 1 times [2020-10-27 15:38:15,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:15,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588826775] [2020-10-27 15:38:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:18,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:18,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 15:38:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:38:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2131 [2020-10-27 15:38:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:38:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:38:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 15:38:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:38:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:38:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:18,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:38:18,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 15:38:18,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:38:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:18,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:38:18,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:38:18,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588826775] [2020-10-27 15:38:18,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:38:18,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:38:18,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495138278] [2020-10-27 15:38:18,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:38:18,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:38:18,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:38:18,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:38:18,583 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 4 states. [2020-10-27 15:38:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:38:20,740 INFO L93 Difference]: Finished difference Result 636 states and 1085 transitions. [2020-10-27 15:38:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:38:20,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-27 15:38:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:38:20,760 INFO L225 Difference]: With dead ends: 636 [2020-10-27 15:38:20,760 INFO L226 Difference]: Without dead ends: 332 [2020-10-27 15:38:20,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:38:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-27 15:38:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2020-10-27 15:38:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-27 15:38:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 428 transitions. [2020-10-27 15:38:20,865 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 428 transitions. Word has length 95 [2020-10-27 15:38:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:38:20,869 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 428 transitions. [2020-10-27 15:38:20,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:38:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 428 transitions. [2020-10-27 15:38:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 15:38:20,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:20,877 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:38:20,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:38:20,877 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:20,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:20,878 INFO L82 PathProgramCache]: Analyzing trace with hash 232135150, now seen corresponding path program 1 times [2020-10-27 15:38:20,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:20,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772857766] [2020-10-27 15:38:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:22,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:22,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 15:38:22,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:38:22,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-27 15:38:22,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:38:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 15:38:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 15:38:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:22,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:38:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:22,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:22,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:38:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:38:22,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:22,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:22,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:38:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:22,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:22,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:38:22,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:38:22,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:38:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:22,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:38:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:38:22,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772857766] [2020-10-27 15:38:22,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:38:22,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:38:22,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311179861] [2020-10-27 15:38:22,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:38:22,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:38:22,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:38:22,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:38:22,681 INFO L87 Difference]: Start difference. First operand 326 states and 428 transitions. Second operand 5 states. [2020-10-27 15:38:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:38:24,524 INFO L93 Difference]: Finished difference Result 800 states and 1092 transitions. [2020-10-27 15:38:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:38:24,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-27 15:38:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:38:24,537 INFO L225 Difference]: With dead ends: 800 [2020-10-27 15:38:24,538 INFO L226 Difference]: Without dead ends: 480 [2020-10-27 15:38:24,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:38:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-27 15:38:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 476. [2020-10-27 15:38:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-27 15:38:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 608 transitions. [2020-10-27 15:38:24,611 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 608 transitions. Word has length 104 [2020-10-27 15:38:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:38:24,612 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 608 transitions. [2020-10-27 15:38:24,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:38:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 608 transitions. [2020-10-27 15:38:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 15:38:24,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:24,626 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:38:24,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:38:24,627 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:24,628 INFO L82 PathProgramCache]: Analyzing trace with hash -725307836, now seen corresponding path program 1 times [2020-10-27 15:38:24,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:24,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832945986] [2020-10-27 15:38:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:29,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:29,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 15:38:29,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:38:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 15:38:29,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:38:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 15:38:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 15:38:29,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:29,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:38:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:29,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:29,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:38:29,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:38:29,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:29,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:38:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:29,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:29,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:38:29,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:38:29,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:38:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:38:29,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:38:30,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832945986] [2020-10-27 15:38:30,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:38:30,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:38:30,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593272643] [2020-10-27 15:38:30,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:38:30,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:38:30,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:38:30,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:38:30,015 INFO L87 Difference]: Start difference. First operand 476 states and 608 transitions. Second operand 5 states. [2020-10-27 15:38:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:38:31,748 INFO L93 Difference]: Finished difference Result 1096 states and 1455 transitions. [2020-10-27 15:38:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:38:31,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-27 15:38:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:38:31,755 INFO L225 Difference]: With dead ends: 1096 [2020-10-27 15:38:31,755 INFO L226 Difference]: Without dead ends: 626 [2020-10-27 15:38:31,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:38:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-27 15:38:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 620. [2020-10-27 15:38:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-27 15:38:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 793 transitions. [2020-10-27 15:38:31,793 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 793 transitions. Word has length 116 [2020-10-27 15:38:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:38:31,794 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 793 transitions. [2020-10-27 15:38:31,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:38:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 793 transitions. [2020-10-27 15:38:31,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 15:38:31,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:31,798 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 15:38:31,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:38:31,799 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:31,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:31,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2003601776, now seen corresponding path program 1 times [2020-10-27 15:38:31,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:31,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593409133] [2020-10-27 15:38:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:34,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 15:38:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:38:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2524 [2020-10-27 15:38:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:38:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 15:38:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 15:38:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:34,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:38:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:34,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:34,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:38:34,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:38:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:34,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:38:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:34,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:34,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:38:34,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:38:34,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:34,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:38:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:34,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:38:34,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:38:34,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:34,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:38:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 15:38:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 15:38:34,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593409133] [2020-10-27 15:38:34,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:38:34,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:38:34,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806797029] [2020-10-27 15:38:34,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:38:34,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:38:34,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:38:34,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:38:34,810 INFO L87 Difference]: Start difference. First operand 620 states and 793 transitions. Second operand 5 states. [2020-10-27 15:38:35,211 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:38:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:38:36,448 INFO L93 Difference]: Finished difference Result 1325 states and 1759 transitions. [2020-10-27 15:38:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:38:36,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-27 15:38:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:38:36,454 INFO L225 Difference]: With dead ends: 1325 [2020-10-27 15:38:36,455 INFO L226 Difference]: Without dead ends: 624 [2020-10-27 15:38:36,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:38:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-10-27 15:38:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 620. [2020-10-27 15:38:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-27 15:38:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 790 transitions. [2020-10-27 15:38:36,486 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 790 transitions. Word has length 124 [2020-10-27 15:38:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:38:36,486 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 790 transitions. [2020-10-27 15:38:36,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:38:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 790 transitions. [2020-10-27 15:38:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 15:38:36,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:36,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:38:36,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:38:36,491 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:36,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:36,491 INFO L82 PathProgramCache]: Analyzing trace with hash 997627156, now seen corresponding path program 1 times [2020-10-27 15:38:36,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:36,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655241716] [2020-10-27 15:38:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:37,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:37,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 15:38:37,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:38:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1406 [2020-10-27 15:38:37,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:38:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 15:38:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 15:38:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:38,712 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-10-27 15:38:38,874 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-10-27 15:38:39,032 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-10-27 15:38:39,182 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2020-10-27 15:38:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:38:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:39,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:39,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:38:39,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:38:39,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:38:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:39,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:38:39,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 15:38:39,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:38:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:38:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:38:39,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655241716] [2020-10-27 15:38:39,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:38:39,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 15:38:39,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311870326] [2020-10-27 15:38:39,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:38:39,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:38:39,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:38:39,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:38:39,579 INFO L87 Difference]: Start difference. First operand 620 states and 790 transitions. Second operand 12 states. [2020-10-27 15:38:40,168 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 15:38:40,356 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 15:38:40,747 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2020-10-27 15:38:41,229 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-10-27 15:38:42,131 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2020-10-27 15:38:42,949 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 112 [2020-10-27 15:38:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:38:43,238 INFO L93 Difference]: Finished difference Result 1326 states and 1757 transitions. [2020-10-27 15:38:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:38:43,239 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2020-10-27 15:38:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:38:43,244 INFO L225 Difference]: With dead ends: 1326 [2020-10-27 15:38:43,244 INFO L226 Difference]: Without dead ends: 712 [2020-10-27 15:38:43,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-27 15:38:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-27 15:38:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 706. [2020-10-27 15:38:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-27 15:38:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 883 transitions. [2020-10-27 15:38:43,287 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 883 transitions. Word has length 129 [2020-10-27 15:38:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:38:43,287 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 883 transitions. [2020-10-27 15:38:43,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:38:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 883 transitions. [2020-10-27 15:38:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 15:38:43,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:43,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:38:43,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:38:43,292 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:43,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:43,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1955355767, now seen corresponding path program 1 times [2020-10-27 15:38:43,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:43,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458297368] [2020-10-27 15:38:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:44,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:44,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 15:38:44,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:38:44,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-27 15:38:44,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:38:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 15:38:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 15:38:44,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:44,989 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-27 15:38:45,173 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-27 15:38:45,405 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 48 [2020-10-27 15:38:45,731 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2020-10-27 15:38:46,034 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 40 [2020-10-27 15:38:46,254 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2020-10-27 15:38:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:38:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:46,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:46,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:38:46,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:38:46,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:38:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:46,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:46,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 15:38:46,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 15:38:46,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:38:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 15:38:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:38:46,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458297368] [2020-10-27 15:38:46,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:38:46,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 15:38:46,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022281573] [2020-10-27 15:38:46,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:38:46,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:38:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:38:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:38:46,755 INFO L87 Difference]: Start difference. First operand 706 states and 883 transitions. Second operand 12 states. [2020-10-27 15:38:47,478 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 15:38:47,750 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 15:38:48,981 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2020-10-27 15:38:49,412 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2020-10-27 15:38:49,690 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 15:38:49,904 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 15:38:50,556 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2020-10-27 15:38:50,850 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 15:38:51,593 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2020-10-27 15:38:51,841 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 15:38:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:38:51,976 INFO L93 Difference]: Finished difference Result 1509 states and 1952 transitions. [2020-10-27 15:38:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:38:51,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2020-10-27 15:38:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:38:51,985 INFO L225 Difference]: With dead ends: 1509 [2020-10-27 15:38:51,985 INFO L226 Difference]: Without dead ends: 809 [2020-10-27 15:38:51,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-10-27 15:38:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-27 15:38:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 791. [2020-10-27 15:38:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-27 15:38:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 976 transitions. [2020-10-27 15:38:52,027 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 976 transitions. Word has length 146 [2020-10-27 15:38:52,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:38:52,028 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 976 transitions. [2020-10-27 15:38:52,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:38:52,028 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 976 transitions. [2020-10-27 15:38:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 15:38:52,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:52,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 15:38:52,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:38:52,033 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:52,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:52,036 INFO L82 PathProgramCache]: Analyzing trace with hash 770487182, now seen corresponding path program 1 times [2020-10-27 15:38:52,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:52,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990075608] [2020-10-27 15:38:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:53,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:55,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:55,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 15:38:55,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:38:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3274 [2020-10-27 15:38:55,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:38:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 15:38:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 15:38:55,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:38:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:38:55,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:38:55,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:55,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:38:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:55,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:55,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:38:55,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:38:55,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:38:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:38:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:38:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:55,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:38:55,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 15:38:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:38:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 15:38:55,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:38:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:38:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:38:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 15:38:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:38:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 15:38:55,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990075608] [2020-10-27 15:38:55,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:38:55,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:38:55,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637690025] [2020-10-27 15:38:55,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:38:55,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:38:55,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:38:55,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:38:55,591 INFO L87 Difference]: Start difference. First operand 791 states and 976 transitions. Second operand 5 states. [2020-10-27 15:38:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:38:57,395 INFO L93 Difference]: Finished difference Result 2172 states and 2756 transitions. [2020-10-27 15:38:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:38:57,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 15:38:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:38:57,414 INFO L225 Difference]: With dead ends: 2172 [2020-10-27 15:38:57,414 INFO L226 Difference]: Without dead ends: 1387 [2020-10-27 15:38:57,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:38:57,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-10-27 15:38:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1383. [2020-10-27 15:38:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2020-10-27 15:38:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1648 transitions. [2020-10-27 15:38:57,496 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1648 transitions. Word has length 149 [2020-10-27 15:38:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:38:57,497 INFO L481 AbstractCegarLoop]: Abstraction has 1383 states and 1648 transitions. [2020-10-27 15:38:57,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:38:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1648 transitions. [2020-10-27 15:38:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 15:38:57,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:38:57,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:38:57,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:38:57,503 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:38:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:38:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash -464925631, now seen corresponding path program 1 times [2020-10-27 15:38:57,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:38:57,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455920881] [2020-10-27 15:38:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:38:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:38:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:57,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:38:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:02,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:02,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 15:39:02,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 15:39:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 15:39:02,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:39:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 15:39:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 15:39:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:39:02,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:39:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:39:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:39:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:39:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:39:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:39:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:39:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:39:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:02,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:02,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:39:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:39:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:39:02,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:39:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:39:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:39:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:39:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:02,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:02,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:02,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 15:39:02,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:39:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 15:39:02,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:39:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:39:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 15:39:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 15:39:02,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455920881] [2020-10-27 15:39:02,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:39:02,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:39:02,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818208311] [2020-10-27 15:39:02,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:39:02,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:39:02,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:39:02,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:39:02,815 INFO L87 Difference]: Start difference. First operand 1383 states and 1648 transitions. Second operand 5 states. [2020-10-27 15:39:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:39:04,295 INFO L93 Difference]: Finished difference Result 3785 states and 4624 transitions. [2020-10-27 15:39:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:39:04,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-27 15:39:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:39:04,317 INFO L225 Difference]: With dead ends: 3785 [2020-10-27 15:39:04,317 INFO L226 Difference]: Without dead ends: 2408 [2020-10-27 15:39:04,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:39:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-10-27 15:39:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2116. [2020-10-27 15:39:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2116 states. [2020-10-27 15:39:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2576 transitions. [2020-10-27 15:39:04,408 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2576 transitions. Word has length 162 [2020-10-27 15:39:04,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:39:04,408 INFO L481 AbstractCegarLoop]: Abstraction has 2116 states and 2576 transitions. [2020-10-27 15:39:04,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:39:04,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2576 transitions. [2020-10-27 15:39:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 15:39:04,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:39:04,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:39:04,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:39:04,417 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:39:04,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:39:04,418 INFO L82 PathProgramCache]: Analyzing trace with hash 683191105, now seen corresponding path program 1 times [2020-10-27 15:39:04,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:39:04,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002911735] [2020-10-27 15:39:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:39:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:04,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:05,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:05,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 15:39:05,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:39:05,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-10-27 15:39:05,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:39:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 15:39:05,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 15:39:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:39:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:06,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:06,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:39:06,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:39:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:39:06,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:39:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:39:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:39:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:39:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:06,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:06,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:39:06,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:39:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:39:06,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:39:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:39:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:39:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:06,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 15:39:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:39:06,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:39:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:39:06,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 15:39:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:39:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 15:39:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:39:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:39:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:39:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 15:39:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:39:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:39:06,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002911735] [2020-10-27 15:39:06,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:39:06,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:39:06,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542159016] [2020-10-27 15:39:06,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:39:06,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:39:06,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:39:06,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:39:06,329 INFO L87 Difference]: Start difference. First operand 2116 states and 2576 transitions. Second operand 7 states. [2020-10-27 15:39:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:39:08,224 INFO L93 Difference]: Finished difference Result 5861 states and 7348 transitions. [2020-10-27 15:39:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 15:39:08,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-27 15:39:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:39:08,246 INFO L225 Difference]: With dead ends: 5861 [2020-10-27 15:39:08,246 INFO L226 Difference]: Without dead ends: 3751 [2020-10-27 15:39:08,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:39:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2020-10-27 15:39:08,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3164. [2020-10-27 15:39:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-27 15:39:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 3964 transitions. [2020-10-27 15:39:08,368 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 3964 transitions. Word has length 173 [2020-10-27 15:39:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:39:08,368 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 3964 transitions. [2020-10-27 15:39:08,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:39:08,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 3964 transitions. [2020-10-27 15:39:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 15:39:08,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:39:08,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:39:08,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:39:08,379 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:39:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:39:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash -194736007, now seen corresponding path program 1 times [2020-10-27 15:39:08,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:39:08,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610181830] [2020-10-27 15:39:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:39:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 15:39:08,451 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 15:39:08,452 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 15:39:08,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:39:08,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:39:08 BoogieIcfgContainer [2020-10-27 15:39:08,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 15:39:08,496 INFO L168 Benchmark]: Toolchain (without parser) took 55333.80 ms. Allocated memory was 164.6 MB in the beginning and 715.1 MB in the end (delta: 550.5 MB). Free memory was 138.7 MB in the beginning and 669.9 MB in the end (delta: -531.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2020-10-27 15:39:08,496 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 85.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 15:39:08,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.69 ms. Allocated memory is still 164.6 MB. Free memory was 138.1 MB in the beginning and 112.6 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-10-27 15:39:08,500 INFO L168 Benchmark]: Boogie Preprocessor took 170.09 ms. Allocated memory is still 164.6 MB. Free memory was 112.6 MB in the beginning and 107.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-27 15:39:08,503 INFO L168 Benchmark]: RCFGBuilder took 1516.25 ms. Allocated memory is still 164.6 MB. Free memory was 107.6 MB in the beginning and 143.6 MB in the end (delta: -36.0 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. [2020-10-27 15:39:08,504 INFO L168 Benchmark]: TraceAbstraction took 52904.84 ms. Allocated memory was 164.6 MB in the beginning and 715.1 MB in the end (delta: 550.5 MB). Free memory was 143.1 MB in the beginning and 669.9 MB in the end (delta: -526.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-10-27 15:39:08,509 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 85.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 724.69 ms. Allocated memory is still 164.6 MB. Free memory was 138.1 MB in the beginning and 112.6 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 170.09 ms. Allocated memory is still 164.6 MB. Free memory was 112.6 MB in the beginning and 107.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1516.25 ms. Allocated memory is still 164.6 MB. Free memory was 107.6 MB in the beginning and 143.6 MB in the end (delta: -36.0 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 52904.84 ms. Allocated memory was 164.6 MB in the beginning and 715.1 MB in the end (delta: 550.5 MB). Free memory was 143.1 MB in the beginning and 669.9 MB in the end (delta: -526.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int a= 1; [L10] int e= 5; [L11] int d= 4; [L12] int f= 6; [L13] int c= 3; [L16] int u = 21; [L17] int v = 22; [L18] int w = 23; [L19] int x = 24; [L20] int y = 25; [L21] int z = 26; [L24] int a25 = 0; [L25] int a11 = 0; [L26] int a28 = 7; [L27] int a19 = 1; [L28] int a21 = 1; [L29] int a17 = 8; [L605] int output = -1; [L608] COND TRUE 1 [L611] int input; [L612] input = __VERIFIER_nondet_int() [L613] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L616] CALL, EXPR calculate_output(input) [L32] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L37] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L40] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L44] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L49] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L52] COND TRUE ((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7))))) [L53] a28 = 11 [L54] a25 = 1 [L55] return 26; [L616] RET, EXPR calculate_output(input) [L616] output = calculate_output(input) [L608] COND TRUE 1 [L611] int input; [L612] input = __VERIFIER_nondet_int() [L613] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L616] CALL, EXPR calculate_output(input) [L32] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L37] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L40] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L44] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L49] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L52] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L56] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L61] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L67] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L71] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L76] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L84] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L93] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L97] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L101] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L108] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L115] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L121] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L125] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L132] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L136] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L141] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L145] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L150] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L156] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L161] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L167] COND FALSE !((((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1))) [L171] COND FALSE !(((a28==11)&&(((a17==8)&&((((input==6)&&(a21==1))&&(a19==1))&&!(a25==1)))&&!(a11==1)))) [L177] COND FALSE !(((!(a11==1)&&(((a17==8)&&((a21==1)&&((input==3)&&(a28==8))))&&(a19==1)))&&(a25==1))) [L181] COND FALSE !((((a21==1)&&(((a19==1)&&(((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))&&(input==4)))&&(a11==1)))&&(a17==9))) [L187] COND FALSE !((((!(a11==1)&&((a17==8)&&(((input==4)&&(a19==1))&&(a28==8))))&&(a21==1))&&(a25==1))) [L189] COND FALSE !(((a19==1)&&((((((input==4)&&(a21==1))&&(a28==9))&&!(a25==1))&&!(a11==1))&&(a17==8)))) [L191] COND FALSE !(((a17==8)&&((((((input==1)&&(a21==1))&&!(a11==1))&&(a19==1))&&!(a25==1))&&(a28==9)))) [L193] COND FALSE !((((((((input==4)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a21==1))&&(a17==8))&&(a28==10))&&(a19==1))) [L196] COND FALSE !(((!(a25==1)&&((a11==1)&&((a28==8)&&(((a17==9)&&(input==4))&&(a19==1)))))&&(a21==1))) [L200] COND FALSE !((!(a19==1)&&((a17==8)&&((a28==10)&&(((a25==1)&&(!(a11==1)&&(input==5)))&&(a21==1)))))) [L204] COND FALSE !((((((a21==1)&&((input==1)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))))&&(a17==8))&&!(a11==1))&&(a19==1))) [L214] COND FALSE !(((a21==1)&&((((a19==1)&&((a25==1)&&((a28==11)&&(input==6))))&&!(a11==1))&&(a17==8)))) [L217] COND FALSE !((!(a11==1)&&((a19==1)&&((a28==10)&&(((((a25==1)||!(a25==1))&&(input==5))&&(a17==8))&&(a21==1)))))) [L220] COND FALSE !((((((a17==9)&&((((a25==1)||!(a25==1))&&(input==6))&&(a11==1)))&&(a19==1))&&(a21==1))&&(a28==9))) [L225] COND FALSE !((((a17==8)&&(((((input==6)&&(a25==1))&&!(a19==1))&&!(a11==1))&&(a28==10)))&&(a21==1))) [L227] COND FALSE !(((!(a19==1)&&((a17==8)&&(!(a11==1)&&((input==1)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))))&&(a21==1))) [L234] COND FALSE !((((((((input==1)&&(a21==1))&&(a28==9))&&!(a19==1))&&!(a25==1))&&(a17==8))&&!(a11==1))) [L236] COND FALSE !(((a17==8)&&(((!(a11==1)&&((!(a25==1)&&(input==4))&&(a19==1)))&&(a28==7))&&(a21==1)))) [L239] COND FALSE !((!(a11==1)&&(((a17==8)&&((((!(a25==1)&&(a28==11))||((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1))))&&(input==3))&&(a21==1)))&&!(a19==1)))) [L250] COND FALSE !(((((!(a11==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==5)))&&(a21==1))&&!(a19==1))&&(a17==8))) [L255] COND FALSE !((((a17==9)&&(((((input==1)&&((a25==1)||!(a25==1)))&&(a11==1))&&(a21==1))&&(a19==1)))&&(a28==9))) [L261] COND FALSE !((!(a11==1)&&((a19==1)&&(((((a28==9)&&(input==6))&&(a21==1))&&(a17==8))&&!(a25==1))))) [L263] COND FALSE !(((a17==9)&&((a21==1)&&((a11==1)&&(((input==3)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a19==1)))))) [L278] COND FALSE !(((a28==7)&&((a17==8)&&(!(a25==1)&&((a21==1)&&((a19==1)&&((input==5)&&!(a11==1)))))))) [L282] COND FALSE !(((a28==8)&&((a21==1)&&((!(a11==1)&&(((input==1)&&(a17==8))&&(a19==1)))&&(a25==1))))) [L285] COND FALSE !((((((a17==8)&&(((input==6)&&((a25==1)||!(a25==1)))&&(a21==1)))&&(a28==10))&&!(a11==1))&&(a19==1))) [L288] COND FALSE !(((!(a11==1)&&((!(a19==1)&&(((!(a25==1)&&(a28==11))||(((a28==10)&&!(a25==1))||((a25==1)&&(a28==11))))&&(input==5)))&&(a17==8)))&&(a21==1))) [L293] COND FALSE !(((a17==8)&&(((a21==1)&&(!(a11==1)&&((a25==1)&&((a28==8)&&(input==6)))))&&(a19==1)))) [L295] COND FALSE !((((a19==1)&&((a17==8)&&(((!(a25==1)&&(input==5))&&(a21==1))&&!(a11==1))))&&(a28==11))) [L299] COND FALSE !(((a11==1)&&(((a17==9)&&((a28==9)&&((a19==1)&&(((a25==1)||!(a25==1))&&(input==5)))))&&(a21==1)))) [L311] COND FALSE !((((((((input==3)&&(a19==1))&&(a21==1))&&(a17==8))&&!(a25==1))&&(a28==11))&&!(a11==1))) [L316] COND FALSE !(((a19==1)&&((a21==1)&&((((input==5)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a11==1))&&(a17==9))))) [L330] COND FALSE !((((a19==1)&&(((!(a11==1)&&(((a25==1)||!(a25==1))&&(input==3)))&&(a28==10))&&(a21==1)))&&(a17==8))) [L333] COND FALSE !(((!(a11==1)&&(((((input==4)&&(a17==8))&&!(a25==1))&&(a21==1))&&(a28==11)))&&(a19==1))) [L339] COND FALSE !((((!(a19==1)&&(((input==4)&&(((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1)))||(!(a25==1)&&(a28==11))))&&(a21==1)))&&(a17==8))&&!(a11==1))) [L351] COND TRUE (!(a11==1)&&(((a17==8)&&((((a25==1)&&(input==4))&&(a19==1))&&(a28==11)))&&(a21==1))) [L352] a28 = 9 [L353] a11 = 1 [L354] a25 = 0 [L355] return -1; [L616] RET, EXPR calculate_output(input) [L616] output = calculate_output(input) [L608] COND TRUE 1 [L611] int input; [L612] input = __VERIFIER_nondet_int() [L613] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L616] CALL calculate_output(input) [L32] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L37] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L40] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L44] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L49] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L52] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L56] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L61] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L67] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L71] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L76] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L84] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L93] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L97] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L101] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L108] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L115] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L121] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L125] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L132] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L136] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L141] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L145] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L150] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L156] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L161] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L167] COND FALSE !((((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1))) [L171] COND FALSE !(((a28==11)&&(((a17==8)&&((((input==6)&&(a21==1))&&(a19==1))&&!(a25==1)))&&!(a11==1)))) [L177] COND FALSE !(((!(a11==1)&&(((a17==8)&&((a21==1)&&((input==3)&&(a28==8))))&&(a19==1)))&&(a25==1))) [L181] COND FALSE !((((a21==1)&&(((a19==1)&&(((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))&&(input==4)))&&(a11==1)))&&(a17==9))) [L187] COND FALSE !((((!(a11==1)&&((a17==8)&&(((input==4)&&(a19==1))&&(a28==8))))&&(a21==1))&&(a25==1))) [L189] COND FALSE !(((a19==1)&&((((((input==4)&&(a21==1))&&(a28==9))&&!(a25==1))&&!(a11==1))&&(a17==8)))) [L191] COND FALSE !(((a17==8)&&((((((input==1)&&(a21==1))&&!(a11==1))&&(a19==1))&&!(a25==1))&&(a28==9)))) [L193] COND FALSE !((((((((input==4)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a21==1))&&(a17==8))&&(a28==10))&&(a19==1))) [L196] COND FALSE !(((!(a25==1)&&((a11==1)&&((a28==8)&&(((a17==9)&&(input==4))&&(a19==1)))))&&(a21==1))) [L200] COND FALSE !((!(a19==1)&&((a17==8)&&((a28==10)&&(((a25==1)&&(!(a11==1)&&(input==5)))&&(a21==1)))))) [L204] COND FALSE !((((((a21==1)&&((input==1)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))))&&(a17==8))&&!(a11==1))&&(a19==1))) [L214] COND FALSE !(((a21==1)&&((((a19==1)&&((a25==1)&&((a28==11)&&(input==6))))&&!(a11==1))&&(a17==8)))) [L217] COND FALSE !((!(a11==1)&&((a19==1)&&((a28==10)&&(((((a25==1)||!(a25==1))&&(input==5))&&(a17==8))&&(a21==1)))))) [L220] COND FALSE !((((((a17==9)&&((((a25==1)||!(a25==1))&&(input==6))&&(a11==1)))&&(a19==1))&&(a21==1))&&(a28==9))) [L225] COND FALSE !((((a17==8)&&(((((input==6)&&(a25==1))&&!(a19==1))&&!(a11==1))&&(a28==10)))&&(a21==1))) [L227] COND FALSE !(((!(a19==1)&&((a17==8)&&(!(a11==1)&&((input==1)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))))&&(a21==1))) [L234] COND FALSE !((((((((input==1)&&(a21==1))&&(a28==9))&&!(a19==1))&&!(a25==1))&&(a17==8))&&!(a11==1))) [L236] COND FALSE !(((a17==8)&&(((!(a11==1)&&((!(a25==1)&&(input==4))&&(a19==1)))&&(a28==7))&&(a21==1)))) [L239] COND FALSE !((!(a11==1)&&(((a17==8)&&((((!(a25==1)&&(a28==11))||((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1))))&&(input==3))&&(a21==1)))&&!(a19==1)))) [L250] COND FALSE !(((((!(a11==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==5)))&&(a21==1))&&!(a19==1))&&(a17==8))) [L255] COND FALSE !((((a17==9)&&(((((input==1)&&((a25==1)||!(a25==1)))&&(a11==1))&&(a21==1))&&(a19==1)))&&(a28==9))) [L261] COND FALSE !((!(a11==1)&&((a19==1)&&(((((a28==9)&&(input==6))&&(a21==1))&&(a17==8))&&!(a25==1))))) [L263] COND FALSE !(((a17==9)&&((a21==1)&&((a11==1)&&(((input==3)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a19==1)))))) [L278] COND FALSE !(((a28==7)&&((a17==8)&&(!(a25==1)&&((a21==1)&&((a19==1)&&((input==5)&&!(a11==1)))))))) [L282] COND FALSE !(((a28==8)&&((a21==1)&&((!(a11==1)&&(((input==1)&&(a17==8))&&(a19==1)))&&(a25==1))))) [L285] COND FALSE !((((((a17==8)&&(((input==6)&&((a25==1)||!(a25==1)))&&(a21==1)))&&(a28==10))&&!(a11==1))&&(a19==1))) [L288] COND FALSE !(((!(a11==1)&&((!(a19==1)&&(((!(a25==1)&&(a28==11))||(((a28==10)&&!(a25==1))||((a25==1)&&(a28==11))))&&(input==5)))&&(a17==8)))&&(a21==1))) [L293] COND FALSE !(((a17==8)&&(((a21==1)&&(!(a11==1)&&((a25==1)&&((a28==8)&&(input==6)))))&&(a19==1)))) [L295] COND FALSE !((((a19==1)&&((a17==8)&&(((!(a25==1)&&(input==5))&&(a21==1))&&!(a11==1))))&&(a28==11))) [L299] COND FALSE !(((a11==1)&&(((a17==9)&&((a28==9)&&((a19==1)&&(((a25==1)||!(a25==1))&&(input==5)))))&&(a21==1)))) [L311] COND FALSE !((((((((input==3)&&(a19==1))&&(a21==1))&&(a17==8))&&!(a25==1))&&(a28==11))&&!(a11==1))) [L316] COND FALSE !(((a19==1)&&((a21==1)&&((((input==5)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a11==1))&&(a17==9))))) [L330] COND FALSE !((((a19==1)&&(((!(a11==1)&&(((a25==1)||!(a25==1))&&(input==3)))&&(a28==10))&&(a21==1)))&&(a17==8))) [L333] COND FALSE !(((!(a11==1)&&(((((input==4)&&(a17==8))&&!(a25==1))&&(a21==1))&&(a28==11)))&&(a19==1))) [L339] COND FALSE !((((!(a19==1)&&(((input==4)&&(((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1)))||(!(a25==1)&&(a28==11))))&&(a21==1)))&&(a17==8))&&!(a11==1))) [L351] COND FALSE !((!(a11==1)&&(((a17==8)&&((((a25==1)&&(input==4))&&(a19==1))&&(a28==11)))&&(a21==1)))) [L356] COND FALSE !((((((a21==1)&&((((a28==8)&&!(a25==1))||((a28==9)&&(a25==1)))&&(input==6)))&&!(a11==1))&&!(a19==1))&&(a17==8))) [L363] COND FALSE !(((a19==1)&&((((a21==1)&&((!(a25==1)&&(input==3))&&(a17==9)))&&(a28==8))&&(a11==1)))) [L370] COND FALSE !(((a17==8)&&(((a21==1)&&(((input==5)&&((!(a25==1)&&(a28==8))||((a28==9)&&(a25==1))))&&(a19==1)))&&!(a11==1)))) [L377] COND FALSE !(((a19==1)&&(((((a17==8)&&((input==5)&&!(a11==1)))&&(a21==1))&&(a25==1))&&(a28==8)))) [L380] COND FALSE !((((!(a11==1)&&((((a21==1)&&(input==4))&&(a28==10))&&(a17==8)))&&!(a19==1))&&(a25==1))) [L382] COND FALSE !(((a28==8)&&(((a19==1)&&((a11==1)&&(!(a25==1)&&((a17==9)&&(input==6)))))&&(a21==1)))) [L391] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==6)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))&&(a17==8))&&!(a19==1)))) [L396] COND FALSE !((((((!(a25==1)&&((a19==1)&&(input==3)))&&(a28==9))&&(a21==1))&&(a17==8))&&!(a11==1))) [L400] COND FALSE !((((a17==8)&&((((input==4)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9))))&&(a21==1))&&!(a19==1)))&&!(a11==1))) [L404] COND FALSE !((((!(a11==1)&&((((a19==1)&&(input==5))&&(a17==8))&&(a21==1)))&&(a28==9))&&!(a25==1))) [L406] COND FALSE !((((a11==1)&&((a19==1)&&((a21==1)&&(((a17==9)&&(input==5))&&!(a25==1)))))&&(a28==8))) [L409] COND FALSE !((!(a11==1)&&((a21==1)&&(((a19==1)&&((a17==8)&&((a25==1)&&(input==5))))&&(a28==11))))) [L411] COND FALSE !(((a19==1)&&((a17==8)&&(((((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))&&!(a11==1))&&(a21==1))))) [L416] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==7))&&!(a19==1))&&(a21==1))&&(a17==8))) [L419] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==10))&&(a19==1))&&(a21==1))&&(a17==8))) [L422] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==8))) [L425] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==7))) [L428] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==8))) [L431] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==9))&&!(a19==1))&&(a21==1))&&(a17==7))) [L434] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==10))&&!(a19==1))&&(a21==1))&&(a17==7))) [L437] COND TRUE (((((!(a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==8)) [L438] CALL reach_error() [L4] __assert_fail("0", "Problem02_label44.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 21.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 346 SDtfs, 3326 SDslu, 388 SDs, 0 SdLazy, 7131 SolverSat, 911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3164occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 927 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 28.9s InterpolantComputationTime, 1375 NumberOfCodeBlocks, 1375 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1189 ConstructedInterpolants, 0 QuantifiedInterpolants, 1712621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 340/352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...