/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:56:55,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:56:55,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:56:55,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:56:55,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:56:55,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:56:55,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:56:55,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:56:55,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:56:55,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:56:55,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:56:55,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:56:55,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:56:55,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:56:55,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:56:55,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:56:55,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:56:55,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:56:55,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:56:55,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:56:55,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:56:55,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:56:55,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:56:55,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:56:55,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:56:55,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:56:55,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:56:55,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:56:55,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:56:55,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:56:55,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:56:55,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:56:55,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:56:55,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:56:55,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:56:55,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:56:55,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:56:55,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:56:55,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:56:55,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:56:55,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:56:55,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:56:55,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:56:55,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:56:55,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:56:55,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:56:55,663 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:56:55,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:56:55,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:56:55,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:56:55,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:56:55,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:56:55,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:56:55,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:56:55,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:56:55,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:56:55,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:56:55,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:56:55,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:56:55,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:56:55,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:56:55,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:56:55,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:56:55,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:56:55,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:56:55,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:56:55,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:56:55,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:56:55,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:56:55,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:56:55,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:56:55,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:56:56,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:56:56,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:56:56,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:56:56,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:56:56,331 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:56:56,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2020-10-27 17:56:56,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffdb67a2f/471bfe482b9c454fa0053d56e2f392bf/FLAGe74a2e4c7 [2020-10-27 17:56:57,813 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:56:57,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label14.c [2020-10-27 17:56:57,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffdb67a2f/471bfe482b9c454fa0053d56e2f392bf/FLAGe74a2e4c7 [2020-10-27 17:56:58,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffdb67a2f/471bfe482b9c454fa0053d56e2f392bf [2020-10-27 17:56:58,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:56:58,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:56:58,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:56:58,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:56:58,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:56:58,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:56:58" (1/1) ... [2020-10-27 17:56:58,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b768b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:56:58, skipping insertion in model container [2020-10-27 17:56:58,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:56:58" (1/1) ... [2020-10-27 17:56:58,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:56:58,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:57:00,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:57:00,561 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:57:01,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:57:01,571 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:57:01,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01 WrapperNode [2020-10-27 17:57:01,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:57:01,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:57:01,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:57:01,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:57:01,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... [2020-10-27 17:57:01,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... [2020-10-27 17:57:01,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... [2020-10-27 17:57:01,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... [2020-10-27 17:57:01,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... [2020-10-27 17:57:02,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... [2020-10-27 17:57:02,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... [2020-10-27 17:57:02,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:57:02,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:57:02,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:57:02,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:57:02,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:57:02,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:57:02,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:57:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:57:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:57:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:57:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:57:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:57:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:57:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:57:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:57:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:57:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:57:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:57:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:57:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:57:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:57:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:57:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:57:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:57:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:57:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:57:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:57:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:57:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:57:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:57:14,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:57:14,253 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:57:14,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:57:14 BoogieIcfgContainer [2020-10-27 17:57:14,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:57:14,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:57:14,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:57:14,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:57:14,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:56:58" (1/3) ... [2020-10-27 17:57:14,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ac290d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:57:14, skipping insertion in model container [2020-10-27 17:57:14,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:01" (2/3) ... [2020-10-27 17:57:14,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ac290d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:57:14, skipping insertion in model container [2020-10-27 17:57:14,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:57:14" (3/3) ... [2020-10-27 17:57:14,274 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label14.c [2020-10-27 17:57:14,290 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:57:14,299 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:57:14,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:57:14,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:57:14,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:57:14,394 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:57:14,394 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:57:14,394 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:57:14,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:57:14,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:57:14,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:57:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-27 17:57:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 17:57:14,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:57:14,475 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] [2020-10-27 17:57:14,475 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:57:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:57:14,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2111073506, now seen corresponding path program 1 times [2020-10-27 17:57:14,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:57:14,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643057240] [2020-10-27 17:57:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:57:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:57:14,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:57:15,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:57:15,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 17:57:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:57:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-27 17:57:15,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:57:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:57:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:57:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 17:57:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:57:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:57:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:57:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:57:15,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:57:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:57:15,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:57:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 17:57:15,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:57:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:57:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:57:15,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:57:15,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:57:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:57:15,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643057240] [2020-10-27 17:57:15,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:57:15,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:57:15,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884249760] [2020-10-27 17:57:15,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:57:15,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:57:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:57:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:57:15,865 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-27 17:57:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:57:43,525 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-27 17:57:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:57:43,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-27 17:57:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:57:43,574 INFO L225 Difference]: With dead ends: 3235 [2020-10-27 17:57:43,576 INFO L226 Difference]: Without dead ends: 2027 [2020-10-27 17:57:43,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:57:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-27 17:57:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-27 17:57:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-27 17:57:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-27 17:57:43,803 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 48 [2020-10-27 17:57:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:57:43,804 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-27 17:57:43,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:57:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-27 17:57:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 17:57:43,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:57:43,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:57:43,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:57:43,821 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:57:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:57:43,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1520322374, now seen corresponding path program 1 times [2020-10-27 17:57:43,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:57:43,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346983776] [2020-10-27 17:57:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:57:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:57:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:57:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:57:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:57:46,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:57:46,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 17:57:46,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:57:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2351 [2020-10-27 17:57:46,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:57:46,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:57:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:57:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 17:57:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:57:46,775 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2020-10-27 17:57:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:57:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:57:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:57:46,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:57:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:57:46,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:57:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:57:46,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:57:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:57:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:57:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:57:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 17:57:46,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:57:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:57:47,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:57:47,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:57:47,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:57:47,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:57:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 17:57:47,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:57:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:57:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:57:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:57:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:57:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:57:47,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346983776] [2020-10-27 17:57:47,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:57:47,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:57:47,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124787710] [2020-10-27 17:57:47,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:57:47,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:57:47,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:57:47,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:57:47,329 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 6 states. [2020-10-27 17:57:48,294 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 17:57:48,707 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-27 17:58:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:58:10,141 INFO L93 Difference]: Finished difference Result 4050 states and 6622 transitions. [2020-10-27 17:58:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 17:58:10,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-10-27 17:58:10,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:58:10,156 INFO L225 Difference]: With dead ends: 4050 [2020-10-27 17:58:10,157 INFO L226 Difference]: Without dead ends: 2014 [2020-10-27 17:58:10,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:58:10,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-10-27 17:58:10,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2010. [2020-10-27 17:58:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-27 17:58:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3290 transitions. [2020-10-27 17:58:10,230 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3290 transitions. Word has length 123 [2020-10-27 17:58:10,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:58:10,231 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3290 transitions. [2020-10-27 17:58:10,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:58:10,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3290 transitions. [2020-10-27 17:58:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 17:58:10,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:58:10,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:58:10,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:58:10,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:58:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:58:10,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1810247375, now seen corresponding path program 1 times [2020-10-27 17:58:10,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:58:10,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66423496] [2020-10-27 17:58:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:58:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:12,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 17:58:12,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:58:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1845 [2020-10-27 17:58:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:58:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 17:58:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 17:58:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:58:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:12,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:12,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:58:12,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:58:12,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:58:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:58:12,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:58:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:12,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:12,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 17:58:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:58:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 17:58:12,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:58:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 17:58:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:58:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:58:12,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66423496] [2020-10-27 17:58:12,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:58:12,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:58:12,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657523795] [2020-10-27 17:58:12,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:58:12,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:58:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:58:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:58:12,628 INFO L87 Difference]: Start difference. First operand 2010 states and 3290 transitions. Second operand 6 states. [2020-10-27 17:58:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:58:50,349 INFO L93 Difference]: Finished difference Result 9086 states and 15352 transitions. [2020-10-27 17:58:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:58:50,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-27 17:58:50,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:58:50,399 INFO L225 Difference]: With dead ends: 9086 [2020-10-27 17:58:50,399 INFO L226 Difference]: Without dead ends: 7082 [2020-10-27 17:58:50,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:58:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7082 states. [2020-10-27 17:58:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7082 to 6998. [2020-10-27 17:58:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6998 states. [2020-10-27 17:58:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 9722 transitions. [2020-10-27 17:58:50,622 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 9722 transitions. Word has length 130 [2020-10-27 17:58:50,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:58:50,622 INFO L481 AbstractCegarLoop]: Abstraction has 6998 states and 9722 transitions. [2020-10-27 17:58:50,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:58:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 9722 transitions. [2020-10-27 17:58:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 17:58:50,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:58:50,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:58:50,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:58:50,626 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:58:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:58:50,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2131631539, now seen corresponding path program 1 times [2020-10-27 17:58:50,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:58:50,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370965974] [2020-10-27 17:58:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:58:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:52,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 17:58:52,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:58:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2182 [2020-10-27 17:58:52,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:58:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 17:58:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 17:58:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:53,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:58:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:53,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:53,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:58:53,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:58:53,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:58:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:58:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:53,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:58:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:58:53,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:58:53,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:58:53,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 17:58:53,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:58:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 17:58:53,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:58:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 17:58:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:58:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 17:58:53,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:58:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:58:53,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370965974] [2020-10-27 17:58:53,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:58:53,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:58:53,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716184986] [2020-10-27 17:58:53,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:58:53,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:58:53,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:58:53,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:58:53,338 INFO L87 Difference]: Start difference. First operand 6998 states and 9722 transitions. Second operand 6 states. [2020-10-27 17:58:54,478 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 17:59:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:59:31,666 INFO L93 Difference]: Finished difference Result 20513 states and 28966 transitions. [2020-10-27 17:59:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:59:31,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-27 17:59:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:59:31,762 INFO L225 Difference]: With dead ends: 20513 [2020-10-27 17:59:31,763 INFO L226 Difference]: Without dead ends: 13490 [2020-10-27 17:59:31,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:59:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13490 states. [2020-10-27 17:59:32,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13490 to 13484. [2020-10-27 17:59:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13484 states. [2020-10-27 17:59:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13484 states to 13484 states and 17139 transitions. [2020-10-27 17:59:32,221 INFO L78 Accepts]: Start accepts. Automaton has 13484 states and 17139 transitions. Word has length 130 [2020-10-27 17:59:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:59:32,222 INFO L481 AbstractCegarLoop]: Abstraction has 13484 states and 17139 transitions. [2020-10-27 17:59:32,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:59:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13484 states and 17139 transitions. [2020-10-27 17:59:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 17:59:32,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:59:32,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:59:32,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:59:32,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:59:32,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:59:32,232 INFO L82 PathProgramCache]: Analyzing trace with hash 518541182, now seen corresponding path program 1 times [2020-10-27 17:59:32,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:59:32,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317646826] [2020-10-27 17:59:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:59:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:32,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:33,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 17:59:33,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:59:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-27 17:59:33,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:59:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 17:59:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 17:59:33,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:59:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:33,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:33,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:59:33,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:59:33,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:59:33,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:59:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:59:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:59:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:33,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:59:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:59:33,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:59:33,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:59:33,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:59:33,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:59:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:59:33,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:59:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:59:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:59:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 17:59:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:59:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:59:33,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317646826] [2020-10-27 17:59:33,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:59:33,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:59:33,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062144682] [2020-10-27 17:59:33,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:59:33,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:59:33,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:59:33,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:59:33,933 INFO L87 Difference]: Start difference. First operand 13484 states and 17139 transitions. Second operand 6 states. [2020-10-27 18:00:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:00:03,732 INFO L93 Difference]: Finished difference Result 38332 states and 50145 transitions. [2020-10-27 18:00:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:00:03,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-27 18:00:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:00:03,862 INFO L225 Difference]: With dead ends: 38332 [2020-10-27 18:00:03,863 INFO L226 Difference]: Without dead ends: 24854 [2020-10-27 18:00:03,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:00:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24854 states. [2020-10-27 18:00:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24854 to 24847. [2020-10-27 18:00:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24847 states. [2020-10-27 18:00:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24847 states to 24847 states and 31432 transitions. [2020-10-27 18:00:04,726 INFO L78 Accepts]: Start accepts. Automaton has 24847 states and 31432 transitions. Word has length 137 [2020-10-27 18:00:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:00:04,727 INFO L481 AbstractCegarLoop]: Abstraction has 24847 states and 31432 transitions. [2020-10-27 18:00:04,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:00:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 24847 states and 31432 transitions. [2020-10-27 18:00:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 18:00:04,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:00:04,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:00:04,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:00:04,732 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:00:04,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:00:04,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1249092058, now seen corresponding path program 1 times [2020-10-27 18:00:04,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:00:04,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321053428] [2020-10-27 18:00:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:00:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:05,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:06,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 18:00:06,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:00:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-27 18:00:06,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:00:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-27 18:00:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 18:00:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:06,303 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:00:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:00:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:06,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:06,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:00:06,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:00:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:00:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:00:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:00:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:06,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:06,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:00:06,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 18:00:06,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:00:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 18:00:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:00:06,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321053428] [2020-10-27 18:00:06,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:00:06,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:00:06,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547825812] [2020-10-27 18:00:06,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:00:06,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:00:06,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:00:06,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:00:06,585 INFO L87 Difference]: Start difference. First operand 24847 states and 31432 transitions. Second operand 5 states. [2020-10-27 18:00:06,756 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:00:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:00:40,535 INFO L93 Difference]: Finished difference Result 61898 states and 81359 transitions. [2020-10-27 18:00:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:00:40,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 18:00:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:00:40,724 INFO L225 Difference]: With dead ends: 61898 [2020-10-27 18:00:40,724 INFO L226 Difference]: Without dead ends: 37057 [2020-10-27 18:00:40,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:00:40,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37057 states. [2020-10-27 18:00:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37057 to 37028. [2020-10-27 18:00:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37028 states. [2020-10-27 18:00:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37028 states to 37028 states and 45880 transitions. [2020-10-27 18:00:41,880 INFO L78 Accepts]: Start accepts. Automaton has 37028 states and 45880 transitions. Word has length 149 [2020-10-27 18:00:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:00:41,881 INFO L481 AbstractCegarLoop]: Abstraction has 37028 states and 45880 transitions. [2020-10-27 18:00:41,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:00:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 37028 states and 45880 transitions. [2020-10-27 18:00:41,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-27 18:00:41,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:00:41,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:00:41,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:00:41,895 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:00:41,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:00:41,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2034046133, now seen corresponding path program 1 times [2020-10-27 18:00:41,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:00:41,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976096243] [2020-10-27 18:00:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:00:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:44,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:44,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 18:00:44,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:00:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2751 [2020-10-27 18:00:44,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:00:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-27 18:00:44,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 18:00:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:00:45,029 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:00:45,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:00:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:45,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:45,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:00:45,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:00:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:00:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:00:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:00:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:00:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:00:45,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:00:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 18:00:45,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:00:45,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 18:00:45,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:00:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:00:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:00:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 18:00:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:00:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:00:45,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976096243] [2020-10-27 18:00:45,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:00:45,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:00:45,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711526303] [2020-10-27 18:00:45,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:00:45,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:00:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:00:45,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:00:45,800 INFO L87 Difference]: Start difference. First operand 37028 states and 45880 transitions. Second operand 5 states. [2020-10-27 18:00:46,010 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 66