/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem04_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:02:19,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:02:19,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:02:19,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:02:19,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:02:19,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:02:19,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:02:19,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:02:19,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:02:19,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:02:19,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:02:19,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:02:19,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:02:19,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:02:19,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:02:19,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:02:19,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:02:19,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:02:19,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:02:19,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:02:19,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:02:19,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:02:19,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:02:19,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:02:19,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:02:19,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:02:19,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:02:19,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:02:19,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:02:19,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:02:19,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:02:19,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:02:19,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:02:19,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:02:19,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:02:19,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:02:19,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:02:19,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:02:19,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:02:19,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:02:19,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:02:19,687 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 [2020-10-29 05:02:19,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:02:19,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:02:19,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:02:19,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:02:19,741 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:02:19,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:02:19,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:02:19,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:02:19,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:02:19,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:02:19,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:02:19,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:02:19,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:02:19,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:02:19,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:02:19,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:02:19,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:02:19,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:02:19,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:02:19,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:02:19,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:02:19,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:02:19,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:02:19,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:02:19,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:02:19,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:02:19,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:02:19,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:02:19,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:02:19,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:02:20,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:02:20,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:02:20,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:02:20,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:02:20,247 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:02:20,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label00.c [2020-10-29 05:02:20,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c198c5dd6/270db9b73c404dc79354b6f79e3c72a2/FLAG8c15e17e4 [2020-10-29 05:02:21,344 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:02:21,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label00.c [2020-10-29 05:02:21,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c198c5dd6/270db9b73c404dc79354b6f79e3c72a2/FLAG8c15e17e4 [2020-10-29 05:02:21,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c198c5dd6/270db9b73c404dc79354b6f79e3c72a2 [2020-10-29 05:02:21,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:02:21,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:02:21,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:02:21,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:02:21,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:02:21,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:02:21" (1/1) ... [2020-10-29 05:02:21,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606cba56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:21, skipping insertion in model container [2020-10-29 05:02:21,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:02:21" (1/1) ... [2020-10-29 05:02:21,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:02:21,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:02:23,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:02:23,410 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:02:24,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:02:24,104 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:02:24,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24 WrapperNode [2020-10-29 05:02:24,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:02:24,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:02:24,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:02:24,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:02:24,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (1/1) ... [2020-10-29 05:02:24,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (1/1) ... [2020-10-29 05:02:24,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (1/1) ... [2020-10-29 05:02:24,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (1/1) ... [2020-10-29 05:02:24,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (1/1) ... [2020-10-29 05:02:24,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (1/1) ... [2020-10-29 05:02:24,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (1/1) ... [2020-10-29 05:02:24,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:02:24,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:02:24,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:02:24,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:02:24,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (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 [2020-10-29 05:02:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:02:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:02:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:02:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:02:24,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:02:24,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:02:24,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:02:24,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:02:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:02:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:02:24,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:02:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:02:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:02:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:02:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:02:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:02:24,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:02:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:02:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:02:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:02:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:02:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:02:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:02:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:02:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:02:31,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:02:31,264 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:02:31,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:31 BoogieIcfgContainer [2020-10-29 05:02:31,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:02:31,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:02:31,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:02:31,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:02:31,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:02:21" (1/3) ... [2020-10-29 05:02:31,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3904c190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:02:31, skipping insertion in model container [2020-10-29 05:02:31,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:02:24" (2/3) ... [2020-10-29 05:02:31,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3904c190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:02:31, skipping insertion in model container [2020-10-29 05:02:31,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:02:31" (3/3) ... [2020-10-29 05:02:31,277 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label00.c [2020-10-29 05:02:31,289 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:02:31,294 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:02:31,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:02:31,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:02:31,341 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:02:31,342 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:02:31,342 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:02:31,342 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:02:31,342 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:02:31,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:02:31,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:02:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:02:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-29 05:02:31,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:31,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:31,439 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:31,447 INFO L82 PathProgramCache]: Analyzing trace with hash 764672396, now seen corresponding path program 1 times [2020-10-29 05:02:31,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:31,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374887932] [2020-10-29 05:02:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:37,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:37,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-29 05:02:37,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:37,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 05:02:37,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:37,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:02:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 821 [2020-10-29 05:02:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 05:02:38,218 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:02:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:38,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:38,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:38,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:38,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 05:02:38,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:38,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:38,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:38,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:39,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374887932] [2020-10-29 05:02:39,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:02:39,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:02:39,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237235666] [2020-10-29 05:02:39,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:02:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:39,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:02:39,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:02:39,475 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:02:39,699 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:02:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:52,837 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:02:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:52,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 814 [2020-10-29 05:02:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:52,892 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:02:52,892 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:02:52,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:02:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:02:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:02:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-29 05:02:53,094 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 814 [2020-10-29 05:02:53,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:53,099 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-29 05:02:53,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:02:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-29 05:02:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-29 05:02:53,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:53,141 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:53,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:02:53,142 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:53,143 INFO L82 PathProgramCache]: Analyzing trace with hash -504399378, now seen corresponding path program 1 times [2020-10-29 05:02:53,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:53,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546879451] [2020-10-29 05:02:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:54,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-29 05:02:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:02:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 05:02:58,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:02:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:02:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 818 [2020-10-29 05:02:58,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:58,985 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:02:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:59,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:59,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:59,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:59,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:02:59,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:59,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:59,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:59,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:59,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:59,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:02:59,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:02:59,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:59,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:02:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:59,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546879451] [2020-10-29 05:02:59,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:59,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:59,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650779172] [2020-10-29 05:02:59,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:59,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:59,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:59,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:59,830 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 5 states. [2020-10-29 05:03:00,152 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:03:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:16,719 INFO L93 Difference]: Finished difference Result 5081 states and 9104 transitions. [2020-10-29 05:03:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:03:16,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 822 [2020-10-29 05:03:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:16,742 INFO L225 Difference]: With dead ends: 5081 [2020-10-29 05:03:16,742 INFO L226 Difference]: Without dead ends: 3397 [2020-10-29 05:03:16,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:03:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2020-10-29 05:03:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3380. [2020-10-29 05:03:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2020-10-29 05:03:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5630 transitions. [2020-10-29 05:03:16,847 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5630 transitions. Word has length 822 [2020-10-29 05:03:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:16,849 INFO L481 AbstractCegarLoop]: Abstraction has 3380 states and 5630 transitions. [2020-10-29 05:03:16,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:03:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5630 transitions. [2020-10-29 05:03:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2020-10-29 05:03:16,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:16,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:16,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:03:16,866 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:16,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:16,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1032566543, now seen corresponding path program 1 times [2020-10-29 05:03:16,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:16,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402261909] [2020-10-29 05:03:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:21,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 905 [2020-10-29 05:03:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:03:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 05:03:21,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:21,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:03:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 05:03:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 818 [2020-10-29 05:03:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:03:22,599 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:03:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:22,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:22,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:22,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:03:22,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:22,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:03:22,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:22,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:03:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 05:03:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:22,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:03:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:03:23,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402261909] [2020-10-29 05:03:23,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:23,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:03:23,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782182105] [2020-10-29 05:03:23,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:03:23,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:03:23,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:03:23,537 INFO L87 Difference]: Start difference. First operand 3380 states and 5630 transitions. Second operand 5 states. [2020-10-29 05:03:23,945 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:03:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:40,326 INFO L93 Difference]: Finished difference Result 10148 states and 17104 transitions. [2020-10-29 05:03:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:03:40,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 887 [2020-10-29 05:03:40,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:40,371 INFO L225 Difference]: With dead ends: 10148 [2020-10-29 05:03:40,371 INFO L226 Difference]: Without dead ends: 6774 [2020-10-29 05:03:40,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:03:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6774 states. [2020-10-29 05:03:40,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6774 to 6766. [2020-10-29 05:03:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6766 states. [2020-10-29 05:03:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 9918 transitions. [2020-10-29 05:03:40,556 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 9918 transitions. Word has length 887 [2020-10-29 05:03:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:40,558 INFO L481 AbstractCegarLoop]: Abstraction has 6766 states and 9918 transitions. [2020-10-29 05:03:40,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:03:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 9918 transitions. [2020-10-29 05:03:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2020-10-29 05:03:40,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:40,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:40,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:03:40,585 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:40,586 INFO L82 PathProgramCache]: Analyzing trace with hash -809402622, now seen corresponding path program 1 times [2020-10-29 05:03:40,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:40,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870399581] [2020-10-29 05:03:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:45,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:45,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 910 [2020-10-29 05:03:45,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:03:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 05:03:45,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:45,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:03:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:03:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 818 [2020-10-29 05:03:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:03:46,369 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:03:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:46,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:46,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:46,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:03:46,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:46,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:46,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:46,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:46,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:03:46,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 05:03:46,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:46,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:03:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:03:47,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870399581] [2020-10-29 05:03:47,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:47,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:03:47,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158334336] [2020-10-29 05:03:47,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:03:47,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:47,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:03:47,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:03:47,327 INFO L87 Difference]: Start difference. First operand 6766 states and 9918 transitions. Second operand 5 states. [2020-10-29 05:03:47,752 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:04:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:04,994 INFO L93 Difference]: Finished difference Result 16909 states and 25842 transitions. [2020-10-29 05:04:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:04:04,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 892 [2020-10-29 05:04:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:05,044 INFO L225 Difference]: With dead ends: 16909 [2020-10-29 05:04:05,045 INFO L226 Difference]: Without dead ends: 10149 [2020-10-29 05:04:05,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:04:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10149 states. [2020-10-29 05:04:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10149 to 10137. [2020-10-29 05:04:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10137 states. [2020-10-29 05:04:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10137 states to 10137 states and 15049 transitions. [2020-10-29 05:04:05,316 INFO L78 Accepts]: Start accepts. Automaton has 10137 states and 15049 transitions. Word has length 892 [2020-10-29 05:04:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:05,317 INFO L481 AbstractCegarLoop]: Abstraction has 10137 states and 15049 transitions. [2020-10-29 05:04:05,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:04:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10137 states and 15049 transitions. [2020-10-29 05:04:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2020-10-29 05:04:05,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:05,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:04:05,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:04:05,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:05,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1581879563, now seen corresponding path program 1 times [2020-10-29 05:04:05,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:05,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087369527] [2020-10-29 05:04:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:10,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:10,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 951 [2020-10-29 05:04:10,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:04:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 05:04:10,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:10,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:04:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-29 05:04:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 818 [2020-10-29 05:04:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:11,021 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:04:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:11,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:11,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:11,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:11,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 05:04:11,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:11,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 05:04:11,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:11,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 05:04:11,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 115 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:04:12,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087369527] [2020-10-29 05:04:12,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:12,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:04:12,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451158811] [2020-10-29 05:04:12,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:04:12,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:04:12,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:04:12,064 INFO L87 Difference]: Start difference. First operand 10137 states and 15049 transitions. Second operand 5 states. [2020-10-29 05:04:12,258 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:04:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:27,058 INFO L93 Difference]: Finished difference Result 29556 states and 45049 transitions. [2020-10-29 05:04:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:04:27,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 933 [2020-10-29 05:04:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:27,136 INFO L225 Difference]: With dead ends: 29556 [2020-10-29 05:04:27,136 INFO L226 Difference]: Without dead ends: 19425 [2020-10-29 05:04:27,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:04:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19425 states. [2020-10-29 05:04:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19425 to 19417. [2020-10-29 05:04:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19417 states. [2020-10-29 05:04:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19417 states to 19417 states and 26957 transitions. [2020-10-29 05:04:27,647 INFO L78 Accepts]: Start accepts. Automaton has 19417 states and 26957 transitions. Word has length 933 [2020-10-29 05:04:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:27,647 INFO L481 AbstractCegarLoop]: Abstraction has 19417 states and 26957 transitions. [2020-10-29 05:04:27,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:04:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 19417 states and 26957 transitions. [2020-10-29 05:04:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-29 05:04:27,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:27,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:04:27,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:04:27,706 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash -882423348, now seen corresponding path program 1 times [2020-10-29 05:04:27,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:27,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150542842] [2020-10-29 05:04:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 964 [2020-10-29 05:04:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:04:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 05:04:32,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:04:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 05:04:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 547 [2020-10-29 05:04:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:34,912 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-29 05:04:35,174 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-29 05:04:35,519 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 38 [2020-10-29 05:04:35,772 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2020-10-29 05:04:36,047 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-29 05:04:36,371 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-10-29 05:04:36,774 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 47 [2020-10-29 05:04:37,136 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 43 [2020-10-29 05:04:37,541 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-10-29 05:04:37,749 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:04:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:37,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:37,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:37,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:04:37,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:37,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:37,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:37,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:37,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:04:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:04:37,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:37,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:37,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:04:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:38,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:38,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 05:04:38,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:38,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 05:04:38,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:38,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:38,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 05:04:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:04:44,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150542842] [2020-10-29 05:04:44,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:44,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:04:44,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958595143] [2020-10-29 05:04:44,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:04:44,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:44,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:04:44,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:04:44,879 INFO L87 Difference]: Start difference. First operand 19417 states and 26957 transitions. Second operand 17 states. [2020-10-29 05:04:47,346 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:04:47,783 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:04:56,520 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:04:56,943 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:04:59,867 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 05:05:01,006 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:05:06,785 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:05:07,293 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 05:05:08,927 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2020-10-29 05:05:11,936 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 132 [2020-10-29 05:05:12,948 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 127 [2020-10-29 05:05:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:15,777 INFO L93 Difference]: Finished difference Result 39376 states and 55119 transitions. [2020-10-29 05:05:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:05:15,778 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 944 [2020-10-29 05:05:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:15,848 INFO L225 Difference]: With dead ends: 39376 [2020-10-29 05:05:15,848 INFO L226 Difference]: Without dead ends: 19965 [2020-10-29 05:05:15,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:05:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19965 states. [2020-10-29 05:05:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19965 to 19957. [2020-10-29 05:05:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19957 states. [2020-10-29 05:05:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19957 states to 19957 states and 27515 transitions. [2020-10-29 05:05:16,319 INFO L78 Accepts]: Start accepts. Automaton has 19957 states and 27515 transitions. Word has length 944 [2020-10-29 05:05:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:16,320 INFO L481 AbstractCegarLoop]: Abstraction has 19957 states and 27515 transitions. [2020-10-29 05:05:16,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:05:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19957 states and 27515 transitions. [2020-10-29 05:05:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2020-10-29 05:05:16,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:16,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:05:16,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:05:16,375 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:16,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1297357981, now seen corresponding path program 1 times [2020-10-29 05:05:16,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:16,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74240886] [2020-10-29 05:05:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:16,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:21,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1075 [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-29 05:05:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-29 05:05:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:24,216 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-29 05:05:24,454 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-10-29 05:05:24,714 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-29 05:05:24,964 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-29 05:05:25,303 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-10-29 05:05:25,676 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-29 05:05:26,208 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-29 05:05:26,616 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-10-29 05:05:26,971 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-29 05:05:27,367 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-29 05:05:27,873 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 41 [2020-10-29 05:05:28,187 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2020-10-29 05:05:28,421 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-10-29 05:05:28,652 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-10-29 05:05:28,863 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:05:28,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:28,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:28,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:05:28,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:28,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:28,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:29,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:29,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 05:05:29,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 05:05:29,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:29,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-29 05:05:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:05:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:29,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:29,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:05:29,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:29,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:05:29,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:29,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:05:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 233 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:05:40,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74240886] [2020-10-29 05:05:40,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:05:40,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 05:05:40,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135579500] [2020-10-29 05:05:40,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 05:05:40,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:05:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 05:05:40,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-29 05:05:40,357 INFO L87 Difference]: Start difference. First operand 19957 states and 27515 transitions. Second operand 19 states. [2020-10-29 05:05:47,007 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 05:05:47,444 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-29 05:05:52,930 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-29 05:05:57,115 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2020-10-29 05:06:00,453 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-29 05:06:01,422 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146