/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/Problem15_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:49:20,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:49:20,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:49:20,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:49:20,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:49:20,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:49:20,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:49:20,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:49:20,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:49:20,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:49:20,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:49:20,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:49:20,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:49:20,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:49:20,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:49:20,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:49:20,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:49:20,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:49:20,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:49:20,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:49:20,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:49:20,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:49:20,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:49:20,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:49:20,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:49:20,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:49:20,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:49:20,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:49:20,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:49:20,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:49:20,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:49:20,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:49:20,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:49:20,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:49:20,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:49:20,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:49:20,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:49:20,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:49:20,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:49:20,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:49:20,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:49:20,637 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 07:49:20,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:49:20,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:49:20,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:49:20,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:49:20,679 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:49:20,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:49:20,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:49:20,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:49:20,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:49:20,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:49:20,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:49:20,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:49:20,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:49:20,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:49:20,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:49:20,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:49:20,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:49:20,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:49:20,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:49:20,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:49:20,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:49:20,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:49:20,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:49:20,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:49:20,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:49:20,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:49:20,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:49:20,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:49:20,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:49:20,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:49:21,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:49:21,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:49:21,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:49:21,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:49:21,224 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:49:21,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2020-10-29 07:49:21,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/951177d7c/30fc7326b381424ab12d6f0c55e7ae1b/FLAGc2db6ca66 [2020-10-29 07:49:22,126 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:49:22,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2020-10-29 07:49:22,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/951177d7c/30fc7326b381424ab12d6f0c55e7ae1b/FLAGc2db6ca66 [2020-10-29 07:49:22,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/951177d7c/30fc7326b381424ab12d6f0c55e7ae1b [2020-10-29 07:49:22,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:49:22,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:49:22,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:49:22,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:49:22,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:49:22,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:49:22" (1/1) ... [2020-10-29 07:49:22,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702d63e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:22, skipping insertion in model container [2020-10-29 07:49:22,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:49:22" (1/1) ... [2020-10-29 07:49:22,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:49:22,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:49:23,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:49:23,344 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:49:23,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:49:23,780 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:49:23,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23 WrapperNode [2020-10-29 07:49:23,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:49:23,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:49:23,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:49:23,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:49:23,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (1/1) ... [2020-10-29 07:49:23,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (1/1) ... [2020-10-29 07:49:23,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (1/1) ... [2020-10-29 07:49:23,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (1/1) ... [2020-10-29 07:49:23,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (1/1) ... [2020-10-29 07:49:23,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (1/1) ... [2020-10-29 07:49:24,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (1/1) ... [2020-10-29 07:49:24,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:49:24,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:49:24,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:49:24,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:49:24,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (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 07:49:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:49:24,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:49:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:49:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:49:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:49:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:49:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:49:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:49:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:49:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:49:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:49:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:49:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:49:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:49:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:49:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:49:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:49:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:49:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:49:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:49:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:49:27,135 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:49:27,136 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:49:27,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:49:27 BoogieIcfgContainer [2020-10-29 07:49:27,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:49:27,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:49:27,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:49:27,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:49:27,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:49:22" (1/3) ... [2020-10-29 07:49:27,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7921af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:49:27, skipping insertion in model container [2020-10-29 07:49:27,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:49:23" (2/3) ... [2020-10-29 07:49:27,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7921af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:49:27, skipping insertion in model container [2020-10-29 07:49:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:49:27" (3/3) ... [2020-10-29 07:49:27,147 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label40.c [2020-10-29 07:49:27,159 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:49:27,165 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:49:27,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:49:27,208 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:49:27,209 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:49:27,209 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:49:27,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:49:27,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:49:27,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:49:27,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:49:27,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:49:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:49:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 07:49:27,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:27,245 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] [2020-10-29 07:49:27,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash -654133201, now seen corresponding path program 1 times [2020-10-29 07:49:27,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:27,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180901138] [2020-10-29 07:49:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:27,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:28,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:28,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 07:49:28,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:28,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-29 07:49:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:28,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 07:49:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:49:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:28,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:28,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:28,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:49:28,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:28,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:28,313 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 07:49:28,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180901138] [2020-10-29 07:49:28,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:49:28,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:49:28,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879346441] [2020-10-29 07:49:28,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:49:28,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:28,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:49:28,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:49:28,344 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:49:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:36,613 INFO L93 Difference]: Finished difference Result 1203 states and 2168 transitions. [2020-10-29 07:49:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:49:36,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-29 07:49:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:36,635 INFO L225 Difference]: With dead ends: 1203 [2020-10-29 07:49:36,636 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 07:49:36,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:49:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 07:49:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 689. [2020-10-29 07:49:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-29 07:49:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1009 transitions. [2020-10-29 07:49:36,782 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1009 transitions. Word has length 33 [2020-10-29 07:49:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:36,783 INFO L481 AbstractCegarLoop]: Abstraction has 689 states and 1009 transitions. [2020-10-29 07:49:36,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:49:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1009 transitions. [2020-10-29 07:49:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 07:49:36,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:36,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:36,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:49:36,789 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:36,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:36,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1686794471, now seen corresponding path program 1 times [2020-10-29 07:49:36,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:36,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44364805] [2020-10-29 07:49:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:38,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:49:38,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1773 [2020-10-29 07:49:38,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:38,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:49:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:38,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:49:38,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:38,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:38,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:49:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:38,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:39,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:39,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:49:39,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 07:49:39,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:39,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:49:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:49:39,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44364805] [2020-10-29 07:49:39,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:49:39,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:49:39,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197019834] [2020-10-29 07:49:39,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:39,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:39,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:39,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:39,100 INFO L87 Difference]: Start difference. First operand 689 states and 1009 transitions. Second operand 7 states. [2020-10-29 07:49:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:47,315 INFO L93 Difference]: Finished difference Result 1706 states and 2409 transitions. [2020-10-29 07:49:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:49:47,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-29 07:49:47,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:47,323 INFO L225 Difference]: With dead ends: 1706 [2020-10-29 07:49:47,324 INFO L226 Difference]: Without dead ends: 1023 [2020-10-29 07:49:47,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:49:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-29 07:49:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1010. [2020-10-29 07:49:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-29 07:49:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1361 transitions. [2020-10-29 07:49:47,372 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1361 transitions. Word has length 102 [2020-10-29 07:49:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:47,372 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1361 transitions. [2020-10-29 07:49:47,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1361 transitions. [2020-10-29 07:49:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 07:49:47,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:47,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:47,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:49:47,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1159973121, now seen corresponding path program 1 times [2020-10-29 07:49:47,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:47,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526145224] [2020-10-29 07:49:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:47,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:48,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:49:48,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-29 07:49:48,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:48,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:48,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:48,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:49:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:48,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:49:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 07:49:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:48,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:49:48,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526145224] [2020-10-29 07:49:48,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:49:48,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:49:48,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079135277] [2020-10-29 07:49:48,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:49:48,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:48,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:49:48,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:49:48,681 INFO L87 Difference]: Start difference. First operand 1010 states and 1361 transitions. Second operand 8 states. [2020-10-29 07:50:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:03,575 INFO L93 Difference]: Finished difference Result 2699 states and 3973 transitions. [2020-10-29 07:50:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:50:03,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-10-29 07:50:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:03,594 INFO L225 Difference]: With dead ends: 2699 [2020-10-29 07:50:03,595 INFO L226 Difference]: Without dead ends: 2002 [2020-10-29 07:50:03,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:50:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2020-10-29 07:50:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1972. [2020-10-29 07:50:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2020-10-29 07:50:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2636 transitions. [2020-10-29 07:50:03,688 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2636 transitions. Word has length 107 [2020-10-29 07:50:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:03,688 INFO L481 AbstractCegarLoop]: Abstraction has 1972 states and 2636 transitions. [2020-10-29 07:50:03,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:50:03,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2636 transitions. [2020-10-29 07:50:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 07:50:03,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:03,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:03,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:50:03,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:03,703 INFO L82 PathProgramCache]: Analyzing trace with hash -812211013, now seen corresponding path program 1 times [2020-10-29 07:50:03,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:03,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088484865] [2020-10-29 07:50:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:04,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 07:50:04,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 07:50:04,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:04,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:50:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 07:50:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:04,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:50:04,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:04,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:04,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:04,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:50:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:50:04,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:04,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:50:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:50:04,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088484865] [2020-10-29 07:50:04,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:04,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:50:04,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225873362] [2020-10-29 07:50:04,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:50:04,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:04,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:50:04,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:50:04,418 INFO L87 Difference]: Start difference. First operand 1972 states and 2636 transitions. Second operand 5 states. [2020-10-29 07:50:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:13,531 INFO L93 Difference]: Finished difference Result 3971 states and 5774 transitions. [2020-10-29 07:50:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:50:13,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 07:50:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:13,552 INFO L225 Difference]: With dead ends: 3971 [2020-10-29 07:50:13,552 INFO L226 Difference]: Without dead ends: 2934 [2020-10-29 07:50:13,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:50:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-29 07:50:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2927. [2020-10-29 07:50:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2020-10-29 07:50:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3775 transitions. [2020-10-29 07:50:13,646 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3775 transitions. Word has length 128 [2020-10-29 07:50:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:13,646 INFO L481 AbstractCegarLoop]: Abstraction has 2927 states and 3775 transitions. [2020-10-29 07:50:13,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:50:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3775 transitions. [2020-10-29 07:50:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 07:50:13,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:13,649 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:50:13,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:50:13,650 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:13,650 INFO L82 PathProgramCache]: Analyzing trace with hash 726839527, now seen corresponding path program 1 times [2020-10-29 07:50:13,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:13,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958324118] [2020-10-29 07:50:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:13,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:15,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:16,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:16,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 07:50:16,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:50:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3091 [2020-10-29 07:50:16,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:16,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:50:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:50:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:50:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:16,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:16,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:16,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:16,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:16,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:50:16,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:16,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:50:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:16,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:17,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:50:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:50:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:17,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:50:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:50:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:50:17,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 07:50:17,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:17,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:50:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:50:17,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958324118] [2020-10-29 07:50:17,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:17,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:17,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417147490] [2020-10-29 07:50:17,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:50:17,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:17,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:50:17,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:50:17,493 INFO L87 Difference]: Start difference. First operand 2927 states and 3775 transitions. Second operand 8 states. [2020-10-29 07:50:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:27,335 INFO L93 Difference]: Finished difference Result 6923 states and 9401 transitions. [2020-10-29 07:50:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:50:27,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-10-29 07:50:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:27,356 INFO L225 Difference]: With dead ends: 6923 [2020-10-29 07:50:27,357 INFO L226 Difference]: Without dead ends: 3961 [2020-10-29 07:50:27,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:50:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2020-10-29 07:50:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3886. [2020-10-29 07:50:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3886 states. [2020-10-29 07:50:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 4608 transitions. [2020-10-29 07:50:27,473 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 4608 transitions. Word has length 200 [2020-10-29 07:50:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:27,473 INFO L481 AbstractCegarLoop]: Abstraction has 3886 states and 4608 transitions. [2020-10-29 07:50:27,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:50:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 4608 transitions. [2020-10-29 07:50:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 07:50:27,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:27,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:27,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:50:27,477 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:27,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1215226280, now seen corresponding path program 1 times [2020-10-29 07:50:27,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:27,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895303408] [2020-10-29 07:50:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:27,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:28,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:28,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 07:50:28,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-29 07:50:28,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:28,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:50:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 07:50:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:28,251 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:50:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:28,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:28,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:28,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:50:28,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:28,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:28,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:28,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:50:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 07:50:28,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:28,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:50:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:50:28,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895303408] [2020-10-29 07:50:28,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:28,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:50:28,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553228739] [2020-10-29 07:50:28,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:50:28,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:28,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:50:28,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:50:28,816 INFO L87 Difference]: Start difference. First operand 3886 states and 4608 transitions. Second operand 5 states. [2020-10-29 07:50:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:36,321 INFO L93 Difference]: Finished difference Result 10304 states and 12534 transitions. [2020-10-29 07:50:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:50:36,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-29 07:50:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:36,358 INFO L225 Difference]: With dead ends: 10304 [2020-10-29 07:50:36,359 INFO L226 Difference]: Without dead ends: 6731 [2020-10-29 07:50:36,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:50:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6731 states. [2020-10-29 07:50:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6731 to 6416. [2020-10-29 07:50:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6416 states. [2020-10-29 07:50:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 7528 transitions. [2020-10-29 07:50:36,544 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 7528 transitions. Word has length 270 [2020-10-29 07:50:36,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:36,544 INFO L481 AbstractCegarLoop]: Abstraction has 6416 states and 7528 transitions. [2020-10-29 07:50:36,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:50:36,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 7528 transitions. [2020-10-29 07:50:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-29 07:50:36,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:36,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:50:36,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:50:36,553 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:36,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1405191947, now seen corresponding path program 1 times [2020-10-29 07:50:36,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:36,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168293882] [2020-10-29 07:50:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:41,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-29 07:50:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:50:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 07:50:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:41,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:50:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:50:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:50:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:41,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:41,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:41,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:50:41,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:41,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:50:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:42,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:42,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:50:42,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-29 07:50:42,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:42,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:42,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:50:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:50:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:42,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:42,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:50:42,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:50:42,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:42,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:50:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 50 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:50:43,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168293882] [2020-10-29 07:50:43,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:43,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:50:43,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280600488] [2020-10-29 07:50:43,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:50:43,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:43,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:50:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:50:43,123 INFO L87 Difference]: Start difference. First operand 6416 states and 7528 transitions. Second operand 8 states. [2020-10-29 07:50:43,272 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:50:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:52,396 INFO L93 Difference]: Finished difference Result 12587 states and 14879 transitions. [2020-10-29 07:50:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:50:52,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 318 [2020-10-29 07:50:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:52,432 INFO L225 Difference]: With dead ends: 12587 [2020-10-29 07:50:52,433 INFO L226 Difference]: Without dead ends: 6484 [2020-10-29 07:50:52,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:50:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2020-10-29 07:50:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 6458. [2020-10-29 07:50:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6458 states. [2020-10-29 07:50:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6458 states to 6458 states and 7608 transitions. [2020-10-29 07:50:52,610 INFO L78 Accepts]: Start accepts. Automaton has 6458 states and 7608 transitions. Word has length 318 [2020-10-29 07:50:52,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:52,611 INFO L481 AbstractCegarLoop]: Abstraction has 6458 states and 7608 transitions. [2020-10-29 07:50:52,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:50:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6458 states and 7608 transitions. [2020-10-29 07:50:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-29 07:50:52,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:52,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:50:52,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:50:52,621 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:52,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:52,622 INFO L82 PathProgramCache]: Analyzing trace with hash 795098260, now seen corresponding path program 1 times [2020-10-29 07:50:52,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:52,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23821967] [2020-10-29 07:50:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:54,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:54,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-29 07:50:54,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:50:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2146 [2020-10-29 07:50:54,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:54,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:50:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:50:54,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:55,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:55,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:55,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:50:55,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:55,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:55,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:55,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:55,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:55,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:50:55,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:55,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-29 07:50:55,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:55,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:50:55,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:55,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:50:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:55,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:50:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:50:55,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:55,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:50:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:50:56,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23821967] [2020-10-29 07:50:56,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:56,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:50:56,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099236522] [2020-10-29 07:50:56,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:50:56,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:56,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:50:56,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:50:56,095 INFO L87 Difference]: Start difference. First operand 6458 states and 7608 transitions. Second operand 8 states. [2020-10-29 07:51:04,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:04,584 INFO L93 Difference]: Finished difference Result 16392 states and 20184 transitions. [2020-10-29 07:51:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:51:04,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 404 [2020-10-29 07:51:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:04,641 INFO L225 Difference]: With dead ends: 16392 [2020-10-29 07:51:04,641 INFO L226 Difference]: Without dead ends: 10247 [2020-10-29 07:51:04,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:51:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2020-10-29 07:51:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 10232. [2020-10-29 07:51:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10232 states. [2020-10-29 07:51:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10232 states to 10232 states and 12243 transitions. [2020-10-29 07:51:04,957 INFO L78 Accepts]: Start accepts. Automaton has 10232 states and 12243 transitions. Word has length 404 [2020-10-29 07:51:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:04,958 INFO L481 AbstractCegarLoop]: Abstraction has 10232 states and 12243 transitions. [2020-10-29 07:51:04,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:51:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 10232 states and 12243 transitions. [2020-10-29 07:51:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-29 07:51:04,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:04,969 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:51:04,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:51:04,970 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:04,971 INFO L82 PathProgramCache]: Analyzing trace with hash -285419954, now seen corresponding path program 1 times [2020-10-29 07:51:04,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:04,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745988332] [2020-10-29 07:51:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:05,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:07,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:07,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-29 07:51:07,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2671 [2020-10-29 07:51:07,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:07,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:51:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:51:07,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:07,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:07,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:07,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:51:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:07,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:07,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:08,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:08,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:51:08,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 07:51:08,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:08,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:51:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:51:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:08,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:08,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:08,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 07:51:08,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:08,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:51:08,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:51:09,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745988332] [2020-10-29 07:51:09,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:09,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:09,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777170230] [2020-10-29 07:51:09,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:09,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:09,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:09,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:09,138 INFO L87 Difference]: Start difference. First operand 10232 states and 12243 transitions. Second operand 7 states. [2020-10-29 07:51:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:19,328 INFO L93 Difference]: Finished difference Result 20187 states and 24270 transitions. [2020-10-29 07:51:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:51:19,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-29 07:51:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:19,371 INFO L225 Difference]: With dead ends: 20187 [2020-10-29 07:51:19,371 INFO L226 Difference]: Without dead ends: 10268 [2020-10-29 07:51:19,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:51:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10268 states. [2020-10-29 07:51:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10268 to 9942. [2020-10-29 07:51:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9942 states. [2020-10-29 07:51:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9942 states to 9942 states and 11943 transitions. [2020-10-29 07:51:19,625 INFO L78 Accepts]: Start accepts. Automaton has 9942 states and 11943 transitions. Word has length 418 [2020-10-29 07:51:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:19,626 INFO L481 AbstractCegarLoop]: Abstraction has 9942 states and 11943 transitions. [2020-10-29 07:51:19,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9942 states and 11943 transitions. [2020-10-29 07:51:19,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-29 07:51:19,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:19,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:51:19,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:51:19,636 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:19,637 INFO L82 PathProgramCache]: Analyzing trace with hash -222736042, now seen corresponding path program 1 times [2020-10-29 07:51:19,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:19,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814517359] [2020-10-29 07:51:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:20,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:20,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-29 07:51:20,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:20,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-29 07:51:20,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:20,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:51:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 07:51:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:20,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:51:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:20,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:20,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:20,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:51:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:20,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:20,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:21,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:21,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:51:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:21,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:51:21,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814517359] [2020-10-29 07:51:21,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:21,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:51:21,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23762525] [2020-10-29 07:51:21,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:51:21,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:21,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:51:21,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:51:21,356 INFO L87 Difference]: Start difference. First operand 9942 states and 11943 transitions. Second operand 5 states. [2020-10-29 07:51:27,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:27,631 INFO L93 Difference]: Finished difference Result 19888 states and 23931 transitions. [2020-10-29 07:51:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:51:27,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 430 [2020-10-29 07:51:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:27,738 INFO L225 Difference]: With dead ends: 19888 [2020-10-29 07:51:27,738 INFO L226 Difference]: Without dead ends: 10259 [2020-10-29 07:51:27,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:51:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10259 states. [2020-10-29 07:51:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10259 to 10254. [2020-10-29 07:51:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10254 states. [2020-10-29 07:51:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10254 states to 10254 states and 11962 transitions. [2020-10-29 07:51:27,961 INFO L78 Accepts]: Start accepts. Automaton has 10254 states and 11962 transitions. Word has length 430 [2020-10-29 07:51:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:27,962 INFO L481 AbstractCegarLoop]: Abstraction has 10254 states and 11962 transitions. [2020-10-29 07:51:27,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:51:27,962 INFO L276 IsEmpty]: Start isEmpty. Operand 10254 states and 11962 transitions. [2020-10-29 07:51:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-29 07:51:27,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:27,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:51:27,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:51:27,974 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:27,975 INFO L82 PathProgramCache]: Analyzing trace with hash -722316116, now seen corresponding path program 1 times [2020-10-29 07:51:27,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:27,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230736121] [2020-10-29 07:51:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:28,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:28,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-29 07:51:28,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-29 07:51:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-10-29 07:51:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 07:51:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 07:51:29,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:51:29,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 07:51:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 07:51:29,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230736121] [2020-10-29 07:51:29,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:29,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:51:29,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446880201] [2020-10-29 07:51:29,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:51:29,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:29,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:51:29,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:51:29,736 INFO L87 Difference]: Start difference. First operand 10254 states and 11962 transitions. Second operand 5 states. [2020-10-29 07:51:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:37,489 INFO L93 Difference]: Finished difference Result 23931 states and 28049 transitions. [2020-10-29 07:51:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:51:37,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 466 [2020-10-29 07:51:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:37,547 INFO L225 Difference]: With dead ends: 23931 [2020-10-29 07:51:37,547 INFO L226 Difference]: Without dead ends: 13990 [2020-10-29 07:51:37,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:51:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13990 states. [2020-10-29 07:51:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13990 to 13352. [2020-10-29 07:51:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13352 states. [2020-10-29 07:51:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13352 states to 13352 states and 15452 transitions. [2020-10-29 07:51:37,890 INFO L78 Accepts]: Start accepts. Automaton has 13352 states and 15452 transitions. Word has length 466 [2020-10-29 07:51:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:37,891 INFO L481 AbstractCegarLoop]: Abstraction has 13352 states and 15452 transitions. [2020-10-29 07:51:37,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:51:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 13352 states and 15452 transitions. [2020-10-29 07:51:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-29 07:51:37,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:37,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:37,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:51:37,907 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash -567979387, now seen corresponding path program 1 times [2020-10-29 07:51:37,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:37,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637216234] [2020-10-29 07:51:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:41,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:42,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4776 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:51:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:42,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:42,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:51:42,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:42,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:43,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:43,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:43,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:43,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 07:51:43,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:43,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:51:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:51:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:43,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:43,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:43,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:43,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:51:43,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 269 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:51:44,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637216234] [2020-10-29 07:51:44,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:44,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:51:44,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693733108] [2020-10-29 07:51:44,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:51:44,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:44,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:51:44,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:51:44,104 INFO L87 Difference]: Start difference. First operand 13352 states and 15452 transitions. Second operand 10 states. [2020-10-29 07:51:51,536 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-29 07:52:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:04,377 INFO L93 Difference]: Finished difference Result 28699 states and 33908 transitions. [2020-10-29 07:52:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 07:52:04,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 521 [2020-10-29 07:52:04,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:04,450 INFO L225 Difference]: With dead ends: 28699 [2020-10-29 07:52:04,450 INFO L226 Difference]: Without dead ends: 17519 [2020-10-29 07:52:04,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=399, Invalid=1763, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 07:52:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17519 states. [2020-10-29 07:52:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17519 to 17480. [2020-10-29 07:52:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17480 states. [2020-10-29 07:52:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17480 states to 17480 states and 20212 transitions. [2020-10-29 07:52:05,009 INFO L78 Accepts]: Start accepts. Automaton has 17480 states and 20212 transitions. Word has length 521 [2020-10-29 07:52:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:05,010 INFO L481 AbstractCegarLoop]: Abstraction has 17480 states and 20212 transitions. [2020-10-29 07:52:05,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:52:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17480 states and 20212 transitions. [2020-10-29 07:52:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-29 07:52:05,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:05,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:52:05,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:52:05,020 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:05,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:05,021 INFO L82 PathProgramCache]: Analyzing trace with hash -833785362, now seen corresponding path program 1 times [2020-10-29 07:52:05,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:05,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104292812] [2020-10-29 07:52:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-29 07:52:09,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:52:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4311 [2020-10-29 07:52:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:09,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:52:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:52:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:09,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:09,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:09,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:09,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:52:09,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:09,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:09,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:09,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:09,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:52:09,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:52:09,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:09,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:09,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:09,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:09,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:09,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:52:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:09,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:52:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:52:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:10,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:52:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:52:10,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104292812] [2020-10-29 07:52:10,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:10,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:10,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558567098] [2020-10-29 07:52:10,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:10,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:10,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:10,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:10,599 INFO L87 Difference]: Start difference. First operand 17480 states and 20212 transitions. Second operand 7 states. [2020-10-29 07:52:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:21,355 INFO L93 Difference]: Finished difference Result 39103 states and 46869 transitions. [2020-10-29 07:52:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:52:21,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-29 07:52:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:21,417 INFO L225 Difference]: With dead ends: 39103 [2020-10-29 07:52:21,418 INFO L226 Difference]: Without dead ends: 21305 [2020-10-29 07:52:21,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:52:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21305 states. [2020-10-29 07:52:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21305 to 21181. [2020-10-29 07:52:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21181 states. [2020-10-29 07:52:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21181 states to 21181 states and 24094 transitions. [2020-10-29 07:52:21,892 INFO L78 Accepts]: Start accepts. Automaton has 21181 states and 24094 transitions. Word has length 558 [2020-10-29 07:52:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:21,893 INFO L481 AbstractCegarLoop]: Abstraction has 21181 states and 24094 transitions. [2020-10-29 07:52:21,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 21181 states and 24094 transitions. [2020-10-29 07:52:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2020-10-29 07:52:21,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:21,904 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:52:21,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:52:21,904 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:21,905 INFO L82 PathProgramCache]: Analyzing trace with hash -166862057, now seen corresponding path program 1 times [2020-10-29 07:52:21,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:21,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263250046] [2020-10-29 07:52:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:22,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:27,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:52:27,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:27,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:27,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:52:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:27,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:27,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:27,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:52:27,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:27,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:52:27,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:27,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:27,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:52:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:27,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:52:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:27,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:27,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:52:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 07:52:27,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:27,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:52:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:27,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-29 07:52:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:28,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 276 proven. 167 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-29 07:52:28,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263250046] [2020-10-29 07:52:28,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:28,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:28,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060967616] [2020-10-29 07:52:28,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:28,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:28,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:28,455 INFO L87 Difference]: Start difference. First operand 21181 states and 24094 transitions. Second operand 7 states. [2020-10-29 07:52:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:36,978 INFO L93 Difference]: Finished difference Result 41443 states and 47230 transitions. [2020-10-29 07:52:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:52:36,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 638 [2020-10-29 07:52:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:37,022 INFO L225 Difference]: With dead ends: 41443 [2020-10-29 07:52:37,022 INFO L226 Difference]: Without dead ends: 22117 [2020-10-29 07:52:37,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:52:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22117 states. [2020-10-29 07:52:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22117 to 22106. [2020-10-29 07:52:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22106 states. [2020-10-29 07:52:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22106 states to 22106 states and 25036 transitions. [2020-10-29 07:52:37,438 INFO L78 Accepts]: Start accepts. Automaton has 22106 states and 25036 transitions. Word has length 638 [2020-10-29 07:52:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:37,439 INFO L481 AbstractCegarLoop]: Abstraction has 22106 states and 25036 transitions. [2020-10-29 07:52:37,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22106 states and 25036 transitions. [2020-10-29 07:52:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2020-10-29 07:52:37,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:37,451 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:37,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:52:37,452 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:37,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1899868566, now seen corresponding path program 1 times [2020-10-29 07:52:37,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:37,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258876293] [2020-10-29 07:52:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 688 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4386 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:52:41,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:42,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:42,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:42,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:52:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:42,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:42,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:52:42,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:52:42,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:42,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:52:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:52:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:42,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:52:42,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 07:52:42,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:42,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:52:42,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:42,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-29 07:52:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:42,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:42,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:52:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:52:42,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:42,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-29 07:52:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 267 proven. 77 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-29 07:52:43,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258876293] [2020-10-29 07:52:43,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:43,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:43,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484890176] [2020-10-29 07:52:43,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:43,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:43,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:43,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:43,186 INFO L87 Difference]: Start difference. First operand 22106 states and 25036 transitions. Second operand 7 states. [2020-10-29 07:52:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:52,003 INFO L93 Difference]: Finished difference Result 44533 states and 50634 transitions. [2020-10-29 07:52:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:52:52,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 670 [2020-10-29 07:52:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:52,040 INFO L225 Difference]: With dead ends: 44533 [2020-10-29 07:52:52,040 INFO L226 Difference]: Without dead ends: 22740 [2020-10-29 07:52:52,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:52:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22740 states. [2020-10-29 07:52:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22740 to 21799. [2020-10-29 07:52:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21799 states. [2020-10-29 07:52:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21799 states to 21799 states and 24653 transitions. [2020-10-29 07:52:52,453 INFO L78 Accepts]: Start accepts. Automaton has 21799 states and 24653 transitions. Word has length 670 [2020-10-29 07:52:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:52,454 INFO L481 AbstractCegarLoop]: Abstraction has 21799 states and 24653 transitions. [2020-10-29 07:52:52,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:52:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 21799 states and 24653 transitions. [2020-10-29 07:52:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2020-10-29 07:52:52,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:52,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:52:52,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:52:52,469 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1275935650, now seen corresponding path program 1 times [2020-10-29 07:52:52,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:52,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278758960] [2020-10-29 07:52:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:56,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-29 07:52:56,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:52:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3963 [2020-10-29 07:52:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:56,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 585 [2020-10-29 07:52:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:52:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:56,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:56,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:52:56,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:56,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:56,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:52:56,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:52:56,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:56,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:52:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:52:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:57,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 07:52:57,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:52:57,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:57,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 07:52:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:57,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-29 07:52:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:57,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:57,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:52:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-29 07:52:57,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278758960] [2020-10-29 07:52:57,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:57,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:52:57,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199011111] [2020-10-29 07:52:57,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:52:57,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:57,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:52:57,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:52:57,569 INFO L87 Difference]: Start difference. First operand 21799 states and 24653 transitions. Second operand 7 states. [2020-10-29 07:52:57,747 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 65