/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:01:45,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:01:45,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:01:45,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:01:45,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:01:45,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:01:45,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:01:45,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:01:45,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:01:45,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:01:45,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:01:45,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:01:45,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:01:45,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:01:45,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:01:45,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:01:45,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:01:45,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:01:45,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:01:45,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:01:45,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:01:45,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:01:45,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:01:45,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:01:45,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:01:45,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:01:45,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:01:45,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:01:45,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:01:45,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:01:45,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:01:45,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:01:45,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:01:45,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:01:45,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:01:45,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:01:45,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:01:45,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:01:45,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:01:45,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:01:45,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:01:45,714 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 [2020-10-28 13:01:45,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:01:45,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:01:45,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:01:45,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:01:45,745 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:01:45,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:01:45,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:01:45,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:01:45,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:01:45,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:01:45,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:01:45,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:01:45,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:01:45,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:01:45,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:01:45,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:01:45,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:01:45,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:01:45,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:01:45,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:01:45,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:01:45,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:01:45,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:01:45,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:01:45,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:01:45,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:01:45,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:01:45,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:01:45,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:01:45,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:01:46,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:01:46,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:01:46,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:01:46,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:01:46,286 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:01:46,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2020-10-28 13:01:46,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1733f6c9/92f981bd07a04d14815fa0cac1635a8f/FLAG59dc06aec [2020-10-28 13:01:47,474 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:01:47,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label13.c [2020-10-28 13:01:47,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1733f6c9/92f981bd07a04d14815fa0cac1635a8f/FLAG59dc06aec [2020-10-28 13:01:47,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1733f6c9/92f981bd07a04d14815fa0cac1635a8f [2020-10-28 13:01:47,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:01:47,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:01:47,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:01:47,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:01:47,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:01:47,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:01:47" (1/1) ... [2020-10-28 13:01:47,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfc022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:47, skipping insertion in model container [2020-10-28 13:01:47,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:01:47" (1/1) ... [2020-10-28 13:01:47,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:01:47,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:01:48,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:01:48,597 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:01:48,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:01:48,907 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:01:48,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48 WrapperNode [2020-10-28 13:01:48,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:01:48,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:01:48,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:01:48,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:01:48,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (1/1) ... [2020-10-28 13:01:48,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (1/1) ... [2020-10-28 13:01:48,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (1/1) ... [2020-10-28 13:01:48,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (1/1) ... [2020-10-28 13:01:49,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (1/1) ... [2020-10-28 13:01:49,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (1/1) ... [2020-10-28 13:01:49,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (1/1) ... [2020-10-28 13:01:49,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:01:49,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:01:49,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:01:49,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:01:49,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (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 [2020-10-28 13:01:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:01:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:01:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:01:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:01:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:01:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:01:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:01:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:01:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:01:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:01:52,514 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:01:52,514 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:01:52,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:01:52 BoogieIcfgContainer [2020-10-28 13:01:52,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:01:52,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:01:52,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:01:52,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:01:52,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:01:47" (1/3) ... [2020-10-28 13:01:52,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b7862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:01:52, skipping insertion in model container [2020-10-28 13:01:52,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:01:48" (2/3) ... [2020-10-28 13:01:52,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b7862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:01:52, skipping insertion in model container [2020-10-28 13:01:52,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:01:52" (3/3) ... [2020-10-28 13:01:52,527 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label13.c [2020-10-28 13:01:52,541 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:01:52,548 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:01:52,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:01:52,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:01:52,599 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:01:52,599 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:01:52,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:01:52,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:01:52,599 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:01:52,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:01:52,600 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:01:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:01:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 13:01:52,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:01:52,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:01:52,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:01:52,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:01:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1460813753, now seen corresponding path program 1 times [2020-10-28 13:01:52,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:01:52,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131657720] [2020-10-28 13:01:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:01:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:53,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:53,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 13:01:53,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-28 13:01:53,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:53,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:01:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:01:53,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 13:01:53,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:01:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:01:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:01:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:01:53,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:01:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:01:53,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:01:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:01:53,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:01:53,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:01:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:01:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:01:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:01:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:01:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:01:53,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131657720] [2020-10-28 13:01:53,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:01:53,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:01:53,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046571137] [2020-10-28 13:01:53,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:01:53,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:01:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:01:53,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:01:53,846 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:02:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:03,439 INFO L93 Difference]: Finished difference Result 1245 states and 2226 transitions. [2020-10-28 13:02:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:02:03,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 13:02:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:03,476 INFO L225 Difference]: With dead ends: 1245 [2020-10-28 13:02:03,476 INFO L226 Difference]: Without dead ends: 725 [2020-10-28 13:02:03,489 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 [2020-10-28 13:02:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-28 13:02:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 713. [2020-10-28 13:02:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-28 13:02:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1130 transitions. [2020-10-28 13:02:03,632 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1130 transitions. Word has length 55 [2020-10-28 13:02:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:03,634 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1130 transitions. [2020-10-28 13:02:03,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:02:03,634 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1130 transitions. [2020-10-28 13:02:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 13:02:03,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:03,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:03,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:02:03,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:03,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:03,649 INFO L82 PathProgramCache]: Analyzing trace with hash 517092563, now seen corresponding path program 1 times [2020-10-28 13:02:03,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:03,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268753175] [2020-10-28 13:02:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:06,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:06,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:02:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:02:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2831 [2020-10-28 13:02:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:06,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:02:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:02:06,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:02:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:02:06,760 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:02:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:06,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:06,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:06,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:02:06,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:06,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:06,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:02:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 13:02:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:07,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:02:07,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 13:02:07,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:07,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:02:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:02:07,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268753175] [2020-10-28 13:02:07,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:02:07,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:02:07,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560071283] [2020-10-28 13:02:07,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:07,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:07,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:07,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:07,270 INFO L87 Difference]: Start difference. First operand 713 states and 1130 transitions. Second operand 7 states. [2020-10-28 13:02:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:18,064 INFO L93 Difference]: Finished difference Result 2091 states and 3342 transitions. [2020-10-28 13:02:18,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:02:18,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-28 13:02:18,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:18,081 INFO L225 Difference]: With dead ends: 2091 [2020-10-28 13:02:18,082 INFO L226 Difference]: Without dead ends: 1384 [2020-10-28 13:02:18,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:02:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-10-28 13:02:18,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1342. [2020-10-28 13:02:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2020-10-28 13:02:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1857 transitions. [2020-10-28 13:02:18,207 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1857 transitions. Word has length 127 [2020-10-28 13:02:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:18,210 INFO L481 AbstractCegarLoop]: Abstraction has 1342 states and 1857 transitions. [2020-10-28 13:02:18,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1857 transitions. [2020-10-28 13:02:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 13:02:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:18,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:18,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:02:18,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:18,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:18,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1937216355, now seen corresponding path program 1 times [2020-10-28 13:02:18,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:18,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890578356] [2020-10-28 13:02:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:20,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 13:02:20,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1797 [2020-10-28 13:02:20,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:20,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:02:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:02:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:02:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:20,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:20,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:20,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:02:20,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:20,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:02:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:20,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:20,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:20,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:02:20,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:02:20,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:20,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:02:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:02:20,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890578356] [2020-10-28 13:02:20,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:02:20,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:02:20,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900912995] [2020-10-28 13:02:20,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:20,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:20,684 INFO L87 Difference]: Start difference. First operand 1342 states and 1857 transitions. Second operand 7 states. [2020-10-28 13:02:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:35,204 INFO L93 Difference]: Finished difference Result 3023 states and 4107 transitions. [2020-10-28 13:02:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:02:35,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 13:02:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:35,222 INFO L225 Difference]: With dead ends: 3023 [2020-10-28 13:02:35,223 INFO L226 Difference]: Without dead ends: 1687 [2020-10-28 13:02:35,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:02:35,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2020-10-28 13:02:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1655. [2020-10-28 13:02:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-10-28 13:02:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2181 transitions. [2020-10-28 13:02:35,307 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2181 transitions. Word has length 135 [2020-10-28 13:02:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:35,317 INFO L481 AbstractCegarLoop]: Abstraction has 1655 states and 2181 transitions. [2020-10-28 13:02:35,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2181 transitions. [2020-10-28 13:02:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 13:02:35,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:35,323 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:35,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:02:35,323 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:35,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1108695665, now seen corresponding path program 1 times [2020-10-28 13:02:35,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:35,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732530541] [2020-10-28 13:02:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:38,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:38,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:02:38,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:02:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-10-28 13:02:38,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:38,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:02:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:02:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:38,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:38,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:38,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:38,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:02:38,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:38,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:38,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:38,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:38,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:38,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:38,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:38,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:38,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:02:38,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:02:38,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:38,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:02:38,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:02:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:38,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:39,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:39,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:02:39,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:02:39,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:39,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:02:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:02:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:02:39,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732530541] [2020-10-28 13:02:39,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:39,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:02:39,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791136143] [2020-10-28 13:02:39,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:02:39,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:39,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:02:39,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:02:39,213 INFO L87 Difference]: Start difference. First operand 1655 states and 2181 transitions. Second operand 7 states. [2020-10-28 13:02:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:02:52,631 INFO L93 Difference]: Finished difference Result 4300 states and 5916 transitions. [2020-10-28 13:02:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:02:52,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-28 13:02:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:02:52,651 INFO L225 Difference]: With dead ends: 4300 [2020-10-28 13:02:52,651 INFO L226 Difference]: Without dead ends: 2647 [2020-10-28 13:02:52,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:02:52,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2020-10-28 13:02:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2623. [2020-10-28 13:02:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2623 states. [2020-10-28 13:02:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3217 transitions. [2020-10-28 13:02:52,754 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3217 transitions. Word has length 230 [2020-10-28 13:02:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:02:52,754 INFO L481 AbstractCegarLoop]: Abstraction has 2623 states and 3217 transitions. [2020-10-28 13:02:52,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:02:52,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3217 transitions. [2020-10-28 13:02:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-28 13:02:52,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:02:52,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:02:52,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:02:52,762 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:02:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:02:52,763 INFO L82 PathProgramCache]: Analyzing trace with hash 948146515, now seen corresponding path program 1 times [2020-10-28 13:02:52,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:02:52,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233603451] [2020-10-28 13:02:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:02:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:55,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:55,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-28 13:02:55,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:02:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2522 [2020-10-28 13:02:55,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:55,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:02:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-28 13:02:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 13:02:55,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:55,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:02:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:55,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:02:55,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:02:55,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:55,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:02:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:02:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:02:55,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:02:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:02:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:02:56,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:02:56,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:02:56,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:02:56,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-28 13:02:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:02:56,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:02:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:02:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:02:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 13:02:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:02:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:02:56,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233603451] [2020-10-28 13:02:56,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:02:56,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:02:56,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100209581] [2020-10-28 13:02:56,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:02:56,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:02:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:02:56,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:02:56,581 INFO L87 Difference]: Start difference. First operand 2623 states and 3217 transitions. Second operand 5 states. [2020-10-28 13:03:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:06,876 INFO L93 Difference]: Finished difference Result 5239 states and 6864 transitions. [2020-10-28 13:03:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:03:06,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-10-28 13:03:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:06,901 INFO L225 Difference]: With dead ends: 5239 [2020-10-28 13:03:06,901 INFO L226 Difference]: Without dead ends: 3865 [2020-10-28 13:03:06,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:03:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2020-10-28 13:03:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3556. [2020-10-28 13:03:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3556 states. [2020-10-28 13:03:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 4311 transitions. [2020-10-28 13:03:07,027 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 4311 transitions. Word has length 341 [2020-10-28 13:03:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:07,028 INFO L481 AbstractCegarLoop]: Abstraction has 3556 states and 4311 transitions. [2020-10-28 13:03:07,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:03:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 4311 transitions. [2020-10-28 13:03:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 13:03:07,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:07,036 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:07,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:03:07,037 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1092433732, now seen corresponding path program 1 times [2020-10-28 13:03:07,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663601942] [2020-10-28 13:03:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:07,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:12,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:12,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-28 13:03:12,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:03:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 13:03:12,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:12,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:03:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:03:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:12,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:12,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:12,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:12,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:03:12,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:12,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:12,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:12,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:12,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:12,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:03:12,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-28 13:03:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:12,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:03:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:03:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:13,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:13,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:13,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 13:03:13,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:13,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:03:13,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663601942] [2020-10-28 13:03:13,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:13,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:13,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313135160] [2020-10-28 13:03:13,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:13,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:13,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:13,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:13,716 INFO L87 Difference]: Start difference. First operand 3556 states and 4311 transitions. Second operand 7 states. [2020-10-28 13:03:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:28,022 INFO L93 Difference]: Finished difference Result 9083 states and 11415 transitions. [2020-10-28 13:03:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:28,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-28 13:03:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:28,053 INFO L225 Difference]: With dead ends: 9083 [2020-10-28 13:03:28,053 INFO L226 Difference]: Without dead ends: 5526 [2020-10-28 13:03:28,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2020-10-28 13:03:28,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5185. [2020-10-28 13:03:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2020-10-28 13:03:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 6194 transitions. [2020-10-28 13:03:28,223 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 6194 transitions. Word has length 372 [2020-10-28 13:03:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:28,225 INFO L481 AbstractCegarLoop]: Abstraction has 5185 states and 6194 transitions. [2020-10-28 13:03:28,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 6194 transitions. [2020-10-28 13:03:28,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-28 13:03:28,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:28,234 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:28,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:03:28,235 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:28,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1927872631, now seen corresponding path program 1 times [2020-10-28 13:03:28,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:28,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199293791] [2020-10-28 13:03:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:31,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:31,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-28 13:03:31,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:31,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3039 [2020-10-28 13:03:31,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:31,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:03:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:03:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:31,640 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:03:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:31,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:31,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:03:31,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:31,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:31,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:32,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:32,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:03:32,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-28 13:03:32,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:32,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:03:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:03:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:32,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:32,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:32,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:32,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 13:03:32,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:32,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:03:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:03:32,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199293791] [2020-10-28 13:03:32,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:32,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:32,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78785622] [2020-10-28 13:03:32,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:32,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:32,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:32,716 INFO L87 Difference]: Start difference. First operand 5185 states and 6194 transitions. Second operand 7 states. [2020-10-28 13:03:47,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:47,859 INFO L93 Difference]: Finished difference Result 12297 states and 15237 transitions. [2020-10-28 13:03:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:47,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-28 13:03:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:47,897 INFO L225 Difference]: With dead ends: 12297 [2020-10-28 13:03:47,897 INFO L226 Difference]: Without dead ends: 7425 [2020-10-28 13:03:47,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2020-10-28 13:03:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7093. [2020-10-28 13:03:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-28 13:03:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 8377 transitions. [2020-10-28 13:03:48,138 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 8377 transitions. Word has length 409 [2020-10-28 13:03:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:48,139 INFO L481 AbstractCegarLoop]: Abstraction has 7093 states and 8377 transitions. [2020-10-28 13:03:48,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 8377 transitions. [2020-10-28 13:03:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-28 13:03:48,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:48,149 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:48,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:03:48,149 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:48,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:48,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1815159398, now seen corresponding path program 1 times [2020-10-28 13:03:48,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:48,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333101719] [2020-10-28 13:03:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:50,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:50,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-28 13:03:50,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2710 [2020-10-28 13:03:50,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:50,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:03:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:03:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:51,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:51,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:51,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:03:51,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:51,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:51,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:03:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:51,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:03:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:51,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:51,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:03:51,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:03:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:51,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:03:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:03:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:03:52,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333101719] [2020-10-28 13:03:52,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:52,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:52,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107752055] [2020-10-28 13:03:52,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:52,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:52,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:52,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:52,365 INFO L87 Difference]: Start difference. First operand 7093 states and 8377 transitions. Second operand 7 states. [2020-10-28 13:04:06,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:06,759 INFO L93 Difference]: Finished difference Result 14897 states and 17659 transitions. [2020-10-28 13:04:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:04:06,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-28 13:04:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:06,810 INFO L225 Difference]: With dead ends: 14897 [2020-10-28 13:04:06,811 INFO L226 Difference]: Without dead ends: 8117 [2020-10-28 13:04:06,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:04:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2020-10-28 13:04:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 8079. [2020-10-28 13:04:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8079 states. [2020-10-28 13:04:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 9476 transitions. [2020-10-28 13:04:07,046 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 9476 transitions. Word has length 440 [2020-10-28 13:04:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:07,047 INFO L481 AbstractCegarLoop]: Abstraction has 8079 states and 9476 transitions. [2020-10-28 13:04:07,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 9476 transitions. [2020-10-28 13:04:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-28 13:04:07,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:07,059 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:07,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:04:07,060 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1901541230, now seen corresponding path program 1 times [2020-10-28 13:04:07,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:07,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187100081] [2020-10-28 13:04:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:07,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-28 13:04:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-28 13:04:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:07,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 13:04:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:08,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:08,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:08,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:08,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:04:08,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:08,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:08,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:08,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:08,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:04:08,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:08,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:08,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:08,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:04:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:08,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:04:08,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187100081] [2020-10-28 13:04:08,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:08,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:04:08,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852278631] [2020-10-28 13:04:08,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:04:08,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:08,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:04:08,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:04:08,683 INFO L87 Difference]: Start difference. First operand 8079 states and 9476 transitions. Second operand 5 states. [2020-10-28 13:04:17,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:17,060 INFO L93 Difference]: Finished difference Result 17734 states and 21454 transitions. [2020-10-28 13:04:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:04:17,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 452 [2020-10-28 13:04:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:17,090 INFO L225 Difference]: With dead ends: 17734 [2020-10-28 13:04:17,090 INFO L226 Difference]: Without dead ends: 9968 [2020-10-28 13:04:17,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:04:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9968 states. [2020-10-28 13:04:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9968 to 9646. [2020-10-28 13:04:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9646 states. [2020-10-28 13:04:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9646 states to 9646 states and 11590 transitions. [2020-10-28 13:04:17,311 INFO L78 Accepts]: Start accepts. Automaton has 9646 states and 11590 transitions. Word has length 452 [2020-10-28 13:04:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:17,312 INFO L481 AbstractCegarLoop]: Abstraction has 9646 states and 11590 transitions. [2020-10-28 13:04:17,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:04:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 9646 states and 11590 transitions. [2020-10-28 13:04:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-28 13:04:17,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:17,321 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:04:17,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:04:17,322 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:17,323 INFO L82 PathProgramCache]: Analyzing trace with hash 511553573, now seen corresponding path program 1 times [2020-10-28 13:04:17,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:17,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462255712] [2020-10-28 13:04:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:19,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:20,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:20,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-28 13:04:20,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:04:20,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2610 [2020-10-28 13:04:20,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:20,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:04:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 13:04:20,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:20,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:20,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:20,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:04:20,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:20,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:20,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:20,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:20,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:20,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:20,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:20,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:20,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:04:20,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:20,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:20,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:20,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:20,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:20,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 13:04:20,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:20,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:04:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:21,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:21,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:04:21,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:04:21,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:21,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:04:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 248 proven. 48 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:04:21,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462255712] [2020-10-28 13:04:21,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:21,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:04:21,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700129139] [2020-10-28 13:04:21,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:04:21,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:04:21,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:04:21,202 INFO L87 Difference]: Start difference. First operand 9646 states and 11590 transitions. Second operand 6 states. [2020-10-28 13:04:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:31,233 INFO L93 Difference]: Finished difference Result 22108 states and 29173 transitions. [2020-10-28 13:04:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:04:31,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 531 [2020-10-28 13:04:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:31,309 INFO L225 Difference]: With dead ends: 22108 [2020-10-28 13:04:31,309 INFO L226 Difference]: Without dead ends: 14333 [2020-10-28 13:04:31,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:04:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14333 states. [2020-10-28 13:04:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14333 to 14159. [2020-10-28 13:04:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14159 states. [2020-10-28 13:04:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14159 states to 14159 states and 17569 transitions. [2020-10-28 13:04:31,798 INFO L78 Accepts]: Start accepts. Automaton has 14159 states and 17569 transitions. Word has length 531 [2020-10-28 13:04:31,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:31,799 INFO L481 AbstractCegarLoop]: Abstraction has 14159 states and 17569 transitions. [2020-10-28 13:04:31,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:04:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 14159 states and 17569 transitions. [2020-10-28 13:04:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-28 13:04:31,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:31,811 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, 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, 2, 2, 2, 2, 2, 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] [2020-10-28 13:04:31,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:04:31,811 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:31,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1203916178, now seen corresponding path program 1 times [2020-10-28 13:04:31,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:31,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809008179] [2020-10-28 13:04:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:32,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-28 13:04:35,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:04:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3099 [2020-10-28 13:04:35,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:35,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:04:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:35,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:35,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:35,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:35,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:04:35,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:35,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:35,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:35,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:35,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:04:35,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:35,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:35,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:35,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:35,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:35,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:04:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:04:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:04:36,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809008179] [2020-10-28 13:04:36,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:36,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:04:36,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919242529] [2020-10-28 13:04:36,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:36,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:36,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:36,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:36,033 INFO L87 Difference]: Start difference. First operand 14159 states and 17569 transitions. Second operand 7 states. [2020-10-28 13:04:38,470 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:04:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:49,496 INFO L93 Difference]: Finished difference Result 28078 states and 34966 transitions. [2020-10-28 13:04:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:04:49,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-28 13:04:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:49,542 INFO L225 Difference]: With dead ends: 28078 [2020-10-28 13:04:49,542 INFO L226 Difference]: Without dead ends: 14232 [2020-10-28 13:04:49,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:04:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14232 states. [2020-10-28 13:04:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14232 to 14202. [2020-10-28 13:04:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14202 states. [2020-10-28 13:04:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14202 states to 14202 states and 17020 transitions. [2020-10-28 13:04:49,894 INFO L78 Accepts]: Start accepts. Automaton has 14202 states and 17020 transitions. Word has length 534 [2020-10-28 13:04:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:49,895 INFO L481 AbstractCegarLoop]: Abstraction has 14202 states and 17020 transitions. [2020-10-28 13:04:49,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 14202 states and 17020 transitions. [2020-10-28 13:04:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-28 13:04:49,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:49,908 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, 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, 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] [2020-10-28 13:04:49,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:04:49,909 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:49,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1343678577, now seen corresponding path program 1 times [2020-10-28 13:04:49,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:49,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577529680] [2020-10-28 13:04:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:52,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:52,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-28 13:04:52,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2585 [2020-10-28 13:04:52,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:52,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:04:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:53,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:53,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:53,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:53,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:04:53,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:53,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:53,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:53,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 13:04:53,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:53,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:53,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:53,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:04:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:53,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 13:04:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:04:54,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577529680] [2020-10-28 13:04:54,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:54,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:04:54,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597277117] [2020-10-28 13:04:54,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:54,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:54,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:54,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:54,111 INFO L87 Difference]: Start difference. First operand 14202 states and 17020 transitions. Second operand 7 states. [2020-10-28 13:05:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:08,443 INFO L93 Difference]: Finished difference Result 31574 states and 39361 transitions. [2020-10-28 13:05:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:05:08,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 606 [2020-10-28 13:05:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:08,503 INFO L225 Difference]: With dead ends: 31574 [2020-10-28 13:05:08,504 INFO L226 Difference]: Without dead ends: 19243 [2020-10-28 13:05:08,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:05:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2020-10-28 13:05:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 18585. [2020-10-28 13:05:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18585 states. [2020-10-28 13:05:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18585 states to 18585 states and 22814 transitions. [2020-10-28 13:05:08,959 INFO L78 Accepts]: Start accepts. Automaton has 18585 states and 22814 transitions. Word has length 606 [2020-10-28 13:05:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:08,960 INFO L481 AbstractCegarLoop]: Abstraction has 18585 states and 22814 transitions. [2020-10-28 13:05:08,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 18585 states and 22814 transitions. [2020-10-28 13:05:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-28 13:05:08,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:08,974 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:05:08,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:05:08,974 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1207276042, now seen corresponding path program 1 times [2020-10-28 13:05:08,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:08,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718775298] [2020-10-28 13:05:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:12,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 630 [2020-10-28 13:05:12,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:05:12,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3060 [2020-10-28 13:05:12,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:12,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:05:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:05:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:12,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:12,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:12,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:12,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:05:12,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:12,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:05:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:12,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:12,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:05:12,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:05:12,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:12,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:05:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 13:05:13,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718775298] [2020-10-28 13:05:13,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:13,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:13,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647878195] [2020-10-28 13:05:13,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:13,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:13,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:13,260 INFO L87 Difference]: Start difference. First operand 18585 states and 22814 transitions. Second operand 7 states. [2020-10-28 13:05:19,165 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:05:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:28,190 INFO L93 Difference]: Finished difference Result 47795 states and 59518 transitions. [2020-10-28 13:05:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:05:28,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 614 [2020-10-28 13:05:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:28,402 INFO L225 Difference]: With dead ends: 47795 [2020-10-28 13:05:28,402 INFO L226 Difference]: Without dead ends: 29523 [2020-10-28 13:05:28,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:05:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29523 states. [2020-10-28 13:05:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29523 to 28239. [2020-10-28 13:05:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28239 states. [2020-10-28 13:05:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28239 states to 28239 states and 34920 transitions. [2020-10-28 13:05:29,102 INFO L78 Accepts]: Start accepts. Automaton has 28239 states and 34920 transitions. Word has length 614 [2020-10-28 13:05:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:29,103 INFO L481 AbstractCegarLoop]: Abstraction has 28239 states and 34920 transitions. [2020-10-28 13:05:29,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 28239 states and 34920 transitions. [2020-10-28 13:05:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-28 13:05:29,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:29,118 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:29,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:05:29,119 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:29,119 INFO L82 PathProgramCache]: Analyzing trace with hash 8469020, now seen corresponding path program 1 times [2020-10-28 13:05:29,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:29,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861542722] [2020-10-28 13:05:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:34,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:34,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-10-28 13:05:34,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:05:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 13:05:34,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:34,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:05:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-28 13:05:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:34,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:34,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:05:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:34,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:34,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:05:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:34,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:34,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:35,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:35,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 13:05:35,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:05:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:05:35,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:35,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:35,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:05:35,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-10-28 13:05:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:35,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:35,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:05:35,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:05:35,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:35,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:35,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:05:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 627 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-28 13:05:35,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861542722] [2020-10-28 13:05:35,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:35,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:05:35,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879459078] [2020-10-28 13:05:35,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:05:35,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:35,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:05:35,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:05:35,571 INFO L87 Difference]: Start difference. First operand 28239 states and 34920 transitions. Second operand 8 states. [2020-10-28 13:05:38,535 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 65