/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=SHALLOWEST --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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:40:07,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:40:07,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:40:07,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:40:07,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:40:07,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:40:07,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:40:07,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:40:07,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:40:07,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:40:07,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:40:07,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:40:07,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:40:07,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:40:07,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:40:07,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:40:07,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:40:07,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:40:07,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:40:07,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:40:07,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:40:07,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:40:07,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:40:07,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:40:07,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:40:07,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:40:07,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:40:07,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:40:07,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:40:07,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:40:07,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:40:07,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:40:07,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:40:07,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:40:07,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:40:07,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:40:07,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:40:07,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:40:07,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:40:07,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:40:07,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:40:07,648 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 [2020-10-26 20:40:07,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:40:07,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:40:07,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:40:07,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:40:07,704 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:40:07,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:40:07,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:40:07,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:40:07,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:40:07,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:40:07,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:40:07,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:40:07,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:40:07,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:40:07,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:40:07,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:40:07,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:40:07,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:40:07,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:40:07,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:40:07,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:40:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:40:07,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:40:07,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:40:07,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:40:07,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:40:07,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:40:07,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:40:07,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:40:07,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:40:08,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:40:08,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:40:08,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:40:08,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:40:08,237 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:40:08,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-10-26 20:40:08,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3486960/e93accf45e6749d9bf5ea39e868ad14e/FLAGf4d67ca67 [2020-10-26 20:40:09,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:40:09,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-10-26 20:40:09,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3486960/e93accf45e6749d9bf5ea39e868ad14e/FLAGf4d67ca67 [2020-10-26 20:40:09,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3486960/e93accf45e6749d9bf5ea39e868ad14e [2020-10-26 20:40:09,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:40:09,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:40:09,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:40:09,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:40:09,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:40:09,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:40:09" (1/1) ... [2020-10-26 20:40:09,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c31796a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:09, skipping insertion in model container [2020-10-26 20:40:09,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:40:09" (1/1) ... [2020-10-26 20:40:09,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:40:09,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:40:10,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:40:10,055 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:40:10,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:40:10,221 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:40:10,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10 WrapperNode [2020-10-26 20:40:10,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:40:10,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:40:10,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:40:10,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:40:10,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (1/1) ... [2020-10-26 20:40:10,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (1/1) ... [2020-10-26 20:40:10,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (1/1) ... [2020-10-26 20:40:10,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (1/1) ... [2020-10-26 20:40:10,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (1/1) ... [2020-10-26 20:40:10,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (1/1) ... [2020-10-26 20:40:10,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (1/1) ... [2020-10-26 20:40:10,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:40:10,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:40:10,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:40:10,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:40:10,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (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 [2020-10-26 20:40:10,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:40:10,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:40:10,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:40:10,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:40:10,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:40:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:40:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:40:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:40:10,495 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:40:10,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:40:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:40:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:40:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:40:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:40:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:40:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:40:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:40:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:40:10,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:40:11,709 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:40:11,710 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:40:11,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:40:11 BoogieIcfgContainer [2020-10-26 20:40:11,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:40:11,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:40:11,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:40:11,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:40:11,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:40:09" (1/3) ... [2020-10-26 20:40:11,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f70e303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:40:11, skipping insertion in model container [2020-10-26 20:40:11,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:40:10" (2/3) ... [2020-10-26 20:40:11,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f70e303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:40:11, skipping insertion in model container [2020-10-26 20:40:11,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:40:11" (3/3) ... [2020-10-26 20:40:11,722 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label50.c [2020-10-26 20:40:11,734 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:40:11,740 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:40:11,753 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:40:11,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:40:11,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:40:11,783 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:40:11,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:40:11,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:40:11,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:40:11,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:40:11,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:40:11,808 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-10-26 20:40:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-26 20:40:11,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:11,819 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] [2020-10-26 20:40:11,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash -165511451, now seen corresponding path program 1 times [2020-10-26 20:40:11,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:11,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090800451] [2020-10-26 20:40:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:13,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:13,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 20:40:13,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-26 20:40:13,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:40:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:40:13,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 20:40:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:40:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:13,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:13,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:13,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:13,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:40:13,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:40:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:40:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:40:13,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090800451] [2020-10-26 20:40:13,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:40:13,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 20:40:13,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706403588] [2020-10-26 20:40:13,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:40:13,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:13,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:40:13,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:40:13,854 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 4 states. [2020-10-26 20:40:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:15,898 INFO L93 Difference]: Finished difference Result 636 states and 1083 transitions. [2020-10-26 20:40:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:40:15,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-26 20:40:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:15,917 INFO L225 Difference]: With dead ends: 636 [2020-10-26 20:40:15,917 INFO L226 Difference]: Without dead ends: 332 [2020-10-26 20:40:15,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:40:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-26 20:40:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 325. [2020-10-26 20:40:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-26 20:40:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 461 transitions. [2020-10-26 20:40:16,018 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 461 transitions. Word has length 88 [2020-10-26 20:40:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:16,018 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 461 transitions. [2020-10-26 20:40:16,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:40:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 461 transitions. [2020-10-26 20:40:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-26 20:40:16,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:16,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:16,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:40:16,026 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1195575690, now seen corresponding path program 1 times [2020-10-26 20:40:16,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:16,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118465035] [2020-10-26 20:40:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:17,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:17,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 20:40:17,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:17,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-26 20:40:17,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:40:17,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:40:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:40:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:17,260 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 20:40:17,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:40:17,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:17,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:40:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 20:40:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:17,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:17,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 20:40:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 20:40:17,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:40:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 20:40:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:40:17,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118465035] [2020-10-26 20:40:17,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:40:17,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:40:17,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387282086] [2020-10-26 20:40:17,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:40:17,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:17,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:40:17,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:40:17,490 INFO L87 Difference]: Start difference. First operand 325 states and 461 transitions. Second operand 7 states. [2020-10-26 20:40:19,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:19,411 INFO L93 Difference]: Finished difference Result 985 states and 1446 transitions. [2020-10-26 20:40:19,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:40:19,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-26 20:40:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:19,423 INFO L225 Difference]: With dead ends: 985 [2020-10-26 20:40:19,423 INFO L226 Difference]: Without dead ends: 666 [2020-10-26 20:40:19,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:40:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-26 20:40:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 630. [2020-10-26 20:40:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-26 20:40:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 873 transitions. [2020-10-26 20:40:19,490 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 873 transitions. Word has length 110 [2020-10-26 20:40:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:19,490 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 873 transitions. [2020-10-26 20:40:19,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:40:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 873 transitions. [2020-10-26 20:40:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-26 20:40:19,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:19,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:19,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:40:19,500 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:19,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1977178634, now seen corresponding path program 1 times [2020-10-26 20:40:19,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:19,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908607750] [2020-10-26 20:40:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:19,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:19,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:19,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 20:40:19,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:19,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-26 20:40:19,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:40:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:40:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:40:19,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:20,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:20,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:40:20,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:40:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:20,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:20,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:20,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 20:40:20,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 20:40:20,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 20:40:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:40:20,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908607750] [2020-10-26 20:40:20,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:40:20,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:40:20,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488210348] [2020-10-26 20:40:20,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:40:20,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:20,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:40:20,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:40:20,277 INFO L87 Difference]: Start difference. First operand 630 states and 873 transitions. Second operand 7 states. [2020-10-26 20:40:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:22,172 INFO L93 Difference]: Finished difference Result 1888 states and 2687 transitions. [2020-10-26 20:40:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:40:22,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-26 20:40:22,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:22,188 INFO L225 Difference]: With dead ends: 1888 [2020-10-26 20:40:22,189 INFO L226 Difference]: Without dead ends: 1264 [2020-10-26 20:40:22,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:40:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2020-10-26 20:40:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1246. [2020-10-26 20:40:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2020-10-26 20:40:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1588 transitions. [2020-10-26 20:40:22,285 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1588 transitions. Word has length 116 [2020-10-26 20:40:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:22,289 INFO L481 AbstractCegarLoop]: Abstraction has 1246 states and 1588 transitions. [2020-10-26 20:40:22,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:40:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1588 transitions. [2020-10-26 20:40:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-26 20:40:22,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:22,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:22,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:40:22,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:22,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash -616384627, now seen corresponding path program 1 times [2020-10-26 20:40:22,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:22,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271228117] [2020-10-26 20:40:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:22,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:22,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 20:40:22,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-26 20:40:22,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-26 20:40:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 20:40:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 20:40:22,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:22,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:22,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:22,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:40:22,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:22,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:22,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:40:22,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:40:22,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:22,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:22,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:22,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 20:40:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:22,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 20:40:22,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:40:22,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 20:40:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:40:22,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271228117] [2020-10-26 20:40:22,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:40:22,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:40:22,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842038098] [2020-10-26 20:40:22,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:40:22,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:22,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:40:22,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:40:22,904 INFO L87 Difference]: Start difference. First operand 1246 states and 1588 transitions. Second operand 5 states. [2020-10-26 20:40:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:24,560 INFO L93 Difference]: Finished difference Result 2942 states and 3879 transitions. [2020-10-26 20:40:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:40:24,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-26 20:40:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:24,571 INFO L225 Difference]: With dead ends: 2942 [2020-10-26 20:40:24,571 INFO L226 Difference]: Without dead ends: 1398 [2020-10-26 20:40:24,577 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 [2020-10-26 20:40:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-10-26 20:40:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1390. [2020-10-26 20:40:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-10-26 20:40:24,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1689 transitions. [2020-10-26 20:40:24,648 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1689 transitions. Word has length 123 [2020-10-26 20:40:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:24,648 INFO L481 AbstractCegarLoop]: Abstraction has 1390 states and 1689 transitions. [2020-10-26 20:40:24,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:40:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1689 transitions. [2020-10-26 20:40:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-26 20:40:24,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:24,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:40:24,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:40:24,654 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1713211529, now seen corresponding path program 1 times [2020-10-26 20:40:24,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:24,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351319215] [2020-10-26 20:40:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:25,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:25,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 20:40:25,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-10-26 20:40:25,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:40:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:40:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 20:40:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:25,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:25,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:25,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:40:25,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:40:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:26,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:26,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:40:26,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 20:40:26,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 20:40:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 20:40:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:26,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-26 20:40:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:40:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 20:40:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:40:26,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351319215] [2020-10-26 20:40:26,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:40:26,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:40:26,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851859347] [2020-10-26 20:40:26,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:40:26,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:26,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:40:26,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:40:26,115 INFO L87 Difference]: Start difference. First operand 1390 states and 1689 transitions. Second operand 7 states. [2020-10-26 20:40:27,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:27,801 INFO L93 Difference]: Finished difference Result 3433 states and 4412 transitions. [2020-10-26 20:40:27,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:40:27,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-26 20:40:27,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:27,817 INFO L225 Difference]: With dead ends: 3433 [2020-10-26 20:40:27,817 INFO L226 Difference]: Without dead ends: 2048 [2020-10-26 20:40:27,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:40:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2020-10-26 20:40:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1990. [2020-10-26 20:40:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-10-26 20:40:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2345 transitions. [2020-10-26 20:40:27,917 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2345 transitions. Word has length 125 [2020-10-26 20:40:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:27,917 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2345 transitions. [2020-10-26 20:40:27,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:40:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2345 transitions. [2020-10-26 20:40:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-26 20:40:27,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:27,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:27,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:40:27,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:27,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:27,923 INFO L82 PathProgramCache]: Analyzing trace with hash 872000993, now seen corresponding path program 1 times [2020-10-26 20:40:27,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:27,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409783650] [2020-10-26 20:40:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:28,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 20:40:28,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:28,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-26 20:40:28,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:28,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:40:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-26 20:40:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 20:40:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:28,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:28,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:28,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:28,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:40:28,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:28,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:40:28,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:40:28,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 20:40:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 20:40:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:28,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:28,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 20:40:28,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:28,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 20:40:28,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 20:40:28,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:40:28,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409783650] [2020-10-26 20:40:28,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:40:28,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:40:28,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210584229] [2020-10-26 20:40:28,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:40:28,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:28,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:40:28,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:40:28,907 INFO L87 Difference]: Start difference. First operand 1990 states and 2345 transitions. Second operand 6 states. [2020-10-26 20:40:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:30,424 INFO L93 Difference]: Finished difference Result 4791 states and 5890 transitions. [2020-10-26 20:40:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:40:30,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-10-26 20:40:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:30,441 INFO L225 Difference]: With dead ends: 4791 [2020-10-26 20:40:30,441 INFO L226 Difference]: Without dead ends: 2493 [2020-10-26 20:40:30,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:40:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-10-26 20:40:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2433. [2020-10-26 20:40:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2433 states. [2020-10-26 20:40:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2799 transitions. [2020-10-26 20:40:30,576 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2799 transitions. Word has length 129 [2020-10-26 20:40:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:30,576 INFO L481 AbstractCegarLoop]: Abstraction has 2433 states and 2799 transitions. [2020-10-26 20:40:30,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:40:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2799 transitions. [2020-10-26 20:40:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-26 20:40:30,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:30,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:30,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:40:30,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:30,583 INFO L82 PathProgramCache]: Analyzing trace with hash 139511005, now seen corresponding path program 1 times [2020-10-26 20:40:30,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:30,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620870600] [2020-10-26 20:40:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:30,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:31,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:32,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:32,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:32,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 20:40:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 20:40:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2267 [2020-10-26 20:40:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:40:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:40:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-26 20:40:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:33,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:33,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:33,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:33,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:40:33,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:33,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:33,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:40:33,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:33,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:33,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:40:33,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:40:33,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:40:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 20:40:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:33,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:33,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 20:40:33,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 20:40:33,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:33,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-26 20:40:33,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:40:33,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620870600] [2020-10-26 20:40:33,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:40:33,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:40:33,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391399070] [2020-10-26 20:40:33,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:40:33,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:33,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:40:33,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:40:33,270 INFO L87 Difference]: Start difference. First operand 2433 states and 2799 transitions. Second operand 8 states. [2020-10-26 20:40:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:34,879 INFO L93 Difference]: Finished difference Result 5777 states and 6740 transitions. [2020-10-26 20:40:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:40:34,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-10-26 20:40:34,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:34,902 INFO L225 Difference]: With dead ends: 5777 [2020-10-26 20:40:34,903 INFO L226 Difference]: Without dead ends: 3350 [2020-10-26 20:40:34,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:40:34,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2020-10-26 20:40:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3168. [2020-10-26 20:40:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2020-10-26 20:40:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 3582 transitions. [2020-10-26 20:40:35,035 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 3582 transitions. Word has length 147 [2020-10-26 20:40:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:35,035 INFO L481 AbstractCegarLoop]: Abstraction has 3168 states and 3582 transitions. [2020-10-26 20:40:35,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:40:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 3582 transitions. [2020-10-26 20:40:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-26 20:40:35,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:35,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:35,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:40:35,044 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:35,045 INFO L82 PathProgramCache]: Analyzing trace with hash -567389935, now seen corresponding path program 1 times [2020-10-26 20:40:35,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:35,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122433276] [2020-10-26 20:40:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:37,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-26 20:40:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:40:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2333 [2020-10-26 20:40:37,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-26 20:40:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:40:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:37,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:37,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:37,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:37,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:40:37,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:37,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:37,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:40:37,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:40:37,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 20:40:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 20:40:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:37,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:37,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:40:37,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:40:37,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:40:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:40:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:37,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:37,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 20:40:37,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:37,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 20:40:37,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-26 20:40:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:40:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 69 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-26 20:40:37,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122433276] [2020-10-26 20:40:37,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:40:37,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:40:37,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621940751] [2020-10-26 20:40:37,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:40:37,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:37,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:40:37,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:40:37,788 INFO L87 Difference]: Start difference. First operand 3168 states and 3582 transitions. Second operand 8 states. [2020-10-26 20:40:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:40,126 INFO L93 Difference]: Finished difference Result 6946 states and 7896 transitions. [2020-10-26 20:40:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:40:40,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-10-26 20:40:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:40,149 INFO L225 Difference]: With dead ends: 6946 [2020-10-26 20:40:40,150 INFO L226 Difference]: Without dead ends: 3784 [2020-10-26 20:40:40,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:40:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2020-10-26 20:40:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3624. [2020-10-26 20:40:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3624 states. [2020-10-26 20:40:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 4061 transitions. [2020-10-26 20:40:40,289 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 4061 transitions. Word has length 155 [2020-10-26 20:40:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:40,289 INFO L481 AbstractCegarLoop]: Abstraction has 3624 states and 4061 transitions. [2020-10-26 20:40:40,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:40:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 4061 transitions. [2020-10-26 20:40:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-26 20:40:40,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:40,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:40,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:40:40,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash -979137042, now seen corresponding path program 1 times [2020-10-26 20:40:40,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:40,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48200947] [2020-10-26 20:40:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:40,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:40,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-26 20:40:40,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-26 20:40:40,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-26 20:40:40,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 20:40:40,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:40,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:40,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:40,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:40,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:40:40,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:40,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:40,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:40,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:40,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:40,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:40,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:40:40,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:40:40,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:40:40,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:40,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-26 20:40:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:40,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 20:40:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 20:40:40,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 20:40:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 20:40:41,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48200947] [2020-10-26 20:40:41,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:40:41,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:40:41,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773713874] [2020-10-26 20:40:41,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:40:41,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:41,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:40:41,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:40:41,051 INFO L87 Difference]: Start difference. First operand 3624 states and 4061 transitions. Second operand 7 states. [2020-10-26 20:40:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:42,533 INFO L93 Difference]: Finished difference Result 7533 states and 8502 transitions. [2020-10-26 20:40:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:40:42,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-26 20:40:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:42,554 INFO L225 Difference]: With dead ends: 7533 [2020-10-26 20:40:42,554 INFO L226 Difference]: Without dead ends: 3915 [2020-10-26 20:40:42,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:40:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3915 states. [2020-10-26 20:40:42,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3915 to 3616. [2020-10-26 20:40:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3616 states. [2020-10-26 20:40:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 4011 transitions. [2020-10-26 20:40:42,679 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 4011 transitions. Word has length 167 [2020-10-26 20:40:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:42,681 INFO L481 AbstractCegarLoop]: Abstraction has 3616 states and 4011 transitions. [2020-10-26 20:40:42,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:40:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 4011 transitions. [2020-10-26 20:40:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-26 20:40:42,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:42,690 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:42,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:40:42,690 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:42,691 INFO L82 PathProgramCache]: Analyzing trace with hash 316327649, now seen corresponding path program 1 times [2020-10-26 20:40:42,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:42,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195168333] [2020-10-26 20:40:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:43,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:43,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-26 20:40:43,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:40:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-26 20:40:43,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:40:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-26 20:40:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 20:40:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:44,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:40:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:44,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:44,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:40:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:40:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:40:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:44,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:44,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:40:44,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:40:44,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:44,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:40:44,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:44,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:40:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 20:40:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:44,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:44,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 20:40:44,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:40:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:40:44,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:40:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:40:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 20:40:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 20:40:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:44,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:44,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-26 20:40:44,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 20:40:44,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-26 20:40:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:44,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-26 20:40:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:40:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:44,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:40:44,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:40:44,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-26 20:40:44,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:40:44,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:40:44,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:40:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:40:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:40:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 20:40:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:40:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 82 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-26 20:40:44,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195168333] [2020-10-26 20:40:44,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:40:44,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:40:44,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556475097] [2020-10-26 20:40:44,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:40:44,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:40:44,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:40:44,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:40:44,630 INFO L87 Difference]: Start difference. First operand 3616 states and 4011 transitions. Second operand 7 states. [2020-10-26 20:40:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:40:46,499 INFO L93 Difference]: Finished difference Result 6457 states and 7143 transitions. [2020-10-26 20:40:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:40:46,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-26 20:40:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:40:46,512 INFO L225 Difference]: With dead ends: 6457 [2020-10-26 20:40:46,512 INFO L226 Difference]: Without dead ends: 2399 [2020-10-26 20:40:46,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:40:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2020-10-26 20:40:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2393. [2020-10-26 20:40:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2020-10-26 20:40:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 2589 transitions. [2020-10-26 20:40:46,616 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 2589 transitions. Word has length 191 [2020-10-26 20:40:46,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:40:46,616 INFO L481 AbstractCegarLoop]: Abstraction has 2393 states and 2589 transitions. [2020-10-26 20:40:46,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:40:46,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 2589 transitions. [2020-10-26 20:40:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 20:40:46,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:40:46,624 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:40:46,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:40:46,625 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:40:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:40:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash -587621283, now seen corresponding path program 1 times [2020-10-26 20:40:46,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:40:46,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320350016] [2020-10-26 20:40:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:40:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 20:40:46,677 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 20:40:46,678 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:40:46,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:40:46,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:40:46 BoogieIcfgContainer [2020-10-26 20:40:46,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:40:46,754 INFO L168 Benchmark]: Toolchain (without parser) took 37315.66 ms. Allocated memory was 125.8 MB in the beginning and 706.7 MB in the end (delta: 580.9 MB). Free memory was 99.6 MB in the beginning and 638.9 MB in the end (delta: -539.4 MB). Peak memory consumption was 42.3 MB. Max. memory is 8.0 GB. [2020-10-26 20:40:46,754 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:40:46,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.84 ms. Allocated memory is still 125.8 MB. Free memory was 98.9 MB in the beginning and 73.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:40:46,759 INFO L168 Benchmark]: Boogie Preprocessor took 173.90 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 73.2 MB in the beginning and 134.4 MB in the end (delta: -61.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-10-26 20:40:46,763 INFO L168 Benchmark]: RCFGBuilder took 1314.09 ms. Allocated memory is still 156.2 MB. Free memory was 134.4 MB in the beginning and 84.4 MB in the end (delta: 50.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2020-10-26 20:40:46,765 INFO L168 Benchmark]: TraceAbstraction took 35037.41 ms. Allocated memory was 156.2 MB in the beginning and 706.7 MB in the end (delta: 550.5 MB). Free memory was 83.9 MB in the beginning and 638.9 MB in the end (delta: -555.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:40:46,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 777.84 ms. Allocated memory is still 125.8 MB. Free memory was 98.9 MB in the beginning and 73.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 173.90 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 73.2 MB in the beginning and 134.4 MB in the end (delta: -61.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1314.09 ms. Allocated memory is still 156.2 MB. Free memory was 134.4 MB in the beginning and 84.4 MB in the end (delta: 50.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 35037.41 ms. Allocated memory was 156.2 MB in the beginning and 706.7 MB in the end (delta: 550.5 MB). Free memory was 83.9 MB in the beginning and 638.9 MB in the end (delta: -555.0 MB). There was no memory consumed. 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 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 TRUE ((a17==8)&&(((!(a11==1)&&((!(a25==1)&&(input==4))&&(a19==1)))&&(a28==7))&&(a21==1))) [L237] a28 = 9 [L238] return 23; [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 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 TRUE (((((!(a25==1)&&((a19==1)&&(input==3)))&&(a28==9))&&(a21==1))&&(a17==8))&&!(a11==1)) [L397] a19 = 0 [L398] a28 = 7 [L399] return 25; [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 TRUE ((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1)) [L57] a28 = 7 [L58] a11 = 1 [L59] a25 = 0 [L60] 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 TRUE (((((!(a25==1)&&(a11==1))&&(a28==7))&&!(a19==1))&&(a21==1))&&(a17==8)) [L417] CALL reach_error() [L4] __assert_fail("0", "Problem02_label50.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: 34.9s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 18.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 4834 SDslu, 567 SDs, 0 SdLazy, 8800 SolverSat, 1283 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3624occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 834 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 1581 NumberOfCodeBlocks, 1581 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1341 ConstructedInterpolants, 0 QuantifiedInterpolants, 598820 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 498/607 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...