/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/Problem04_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:25:33,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:25:33,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:25:33,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:25:33,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:25:33,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:25:33,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:25:33,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:25:33,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:25:33,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:25:33,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:25:33,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:25:33,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:25:33,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:25:33,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:25:33,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:25:33,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:25:33,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:25:33,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:25:33,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:25:33,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:25:33,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:25:33,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:25:33,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:25:33,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:25:33,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:25:33,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:25:33,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:25:33,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:25:33,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:25:33,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:25:33,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:25:33,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:25:33,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:25:33,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:25:33,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:25:33,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:25:33,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:25:33,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:25:33,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:25:33,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:25:33,594 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 10:25:33,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:25:33,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:25:33,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:25:33,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:25:33,650 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:25:33,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:25:33,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:25:33,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:25:33,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:25:33,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:25:33,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:25:33,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:25:33,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:25:33,652 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:25:33,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:25:33,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:25:33,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:25:33,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:25:33,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:25:33,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:25:33,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:25:33,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:25:33,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:25:33,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:25:33,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:25:33,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:25:33,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:25:33,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:25:33,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:25:33,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:25:34,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:25:34,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:25:34,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:25:34,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:25:34,124 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:25:34,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label11.c [2020-10-28 10:25:34,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a5e26835/9947bdc453be49bba3c364fd635f029b/FLAGbbaed4ae1 [2020-10-28 10:25:35,279 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:25:35,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label11.c [2020-10-28 10:25:35,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a5e26835/9947bdc453be49bba3c364fd635f029b/FLAGbbaed4ae1 [2020-10-28 10:25:35,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a5e26835/9947bdc453be49bba3c364fd635f029b [2020-10-28 10:25:35,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:25:35,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:25:35,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:25:35,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:25:35,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:25:35,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:25:35" (1/1) ... [2020-10-28 10:25:35,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4260a5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:35, skipping insertion in model container [2020-10-28 10:25:35,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:25:35" (1/1) ... [2020-10-28 10:25:35,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:25:35,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:25:37,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:25:37,378 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:25:38,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:25:38,133 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:25:38,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38 WrapperNode [2020-10-28 10:25:38,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:25:38,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:25:38,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:25:38,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:25:38,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (1/1) ... [2020-10-28 10:25:38,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (1/1) ... [2020-10-28 10:25:38,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (1/1) ... [2020-10-28 10:25:38,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (1/1) ... [2020-10-28 10:25:38,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (1/1) ... [2020-10-28 10:25:38,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (1/1) ... [2020-10-28 10:25:38,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (1/1) ... [2020-10-28 10:25:38,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:25:38,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:25:38,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:25:38,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:25:38,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (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 10:25:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:25:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:25:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:25:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:25:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:25:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:25:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:25:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:25:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:25:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:25:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:25:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:25:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:25:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:25:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:25:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:25:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:25:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:25:43,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:25:43,406 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:25:43,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:25:43 BoogieIcfgContainer [2020-10-28 10:25:43,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:25:43,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:25:43,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:25:43,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:25:43,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:25:35" (1/3) ... [2020-10-28 10:25:43,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f1fa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:25:43, skipping insertion in model container [2020-10-28 10:25:43,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:38" (2/3) ... [2020-10-28 10:25:43,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f1fa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:25:43, skipping insertion in model container [2020-10-28 10:25:43,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:25:43" (3/3) ... [2020-10-28 10:25:43,424 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label11.c [2020-10-28 10:25:43,437 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:25:43,444 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:25:43,458 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:25:43,502 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:25:43,503 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:25:43,503 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:25:43,503 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:25:43,503 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:25:43,503 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:25:43,503 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:25:43,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:25:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:25:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-10-28 10:25:43,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:43,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:25:43,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:43,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2016629636, now seen corresponding path program 1 times [2020-10-28 10:25:43,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:43,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212567350] [2020-10-28 10:25:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:49,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:49,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 796 [2020-10-28 10:25:49,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:25:49,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 10:25:49,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:49,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:25:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:25:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 787 [2020-10-28 10:25:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:25:50,335 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:25:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:25:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:50,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:25:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:25:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:50,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:25:50,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:25:51,411 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 10:25:51,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212567350] [2020-10-28 10:25:51,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:25:51,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:25:51,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739524393] [2020-10-28 10:25:51,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:25:51,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:51,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:25:51,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:25:51,438 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-28 10:25:51,625 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:02,379 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-28 10:26:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:26:02,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 780 [2020-10-28 10:26:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:02,440 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:26:02,441 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:26:02,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:26:02,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:26:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-28 10:26:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-28 10:26:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-28 10:26:02,662 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 780 [2020-10-28 10:26:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:02,665 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-28 10:26:02,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:26:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-28 10:26:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2020-10-28 10:26:02,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:02,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:26:02,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:26:02,697 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:02,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1153201050, now seen corresponding path program 1 times [2020-10-28 10:26:02,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:02,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962068156] [2020-10-28 10:26:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:04,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:07,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-28 10:26:07,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:26:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-28 10:26:07,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:07,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:26:07,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:26:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:26:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:08,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:08,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:08,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:08,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:26:08,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:08,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:26:08,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:26:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:26:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:26:08,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:08,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:26:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:26:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:26:08,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962068156] [2020-10-28 10:26:08,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:26:08,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:26:08,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958543035] [2020-10-28 10:26:08,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:08,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:08,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:08,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:08,741 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 7 states. [2020-10-28 10:26:08,877 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:15,497 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:26:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:21,226 INFO L93 Difference]: Finished difference Result 5176 states and 9306 transitions. [2020-10-28 10:26:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:26:21,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 788 [2020-10-28 10:26:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:21,255 INFO L225 Difference]: With dead ends: 5176 [2020-10-28 10:26:21,256 INFO L226 Difference]: Without dead ends: 3492 [2020-10-28 10:26:21,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:26:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2020-10-28 10:26:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3437. [2020-10-28 10:26:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2020-10-28 10:26:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5763 transitions. [2020-10-28 10:26:21,377 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5763 transitions. Word has length 788 [2020-10-28 10:26:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:21,377 INFO L481 AbstractCegarLoop]: Abstraction has 3437 states and 5763 transitions. [2020-10-28 10:26:21,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5763 transitions. [2020-10-28 10:26:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-28 10:26:21,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:21,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:26:21,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:26:21,412 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:21,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1863604546, now seen corresponding path program 1 times [2020-10-28 10:26:21,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:21,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292286430] [2020-10-28 10:26:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:26,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:26,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 808 [2020-10-28 10:26:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:26:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 10:26:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:26,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:26:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:26:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:26,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:26,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:26,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:26,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:26:26,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:26,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:26,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:26:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:26,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:26:26,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:26:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:26,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:26:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:26:27,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292286430] [2020-10-28 10:26:27,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:26:27,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:26:27,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124587769] [2020-10-28 10:26:27,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:27,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:27,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:27,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:27,217 INFO L87 Difference]: Start difference. First operand 3437 states and 5763 transitions. Second operand 7 states. [2020-10-28 10:26:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:38,534 INFO L93 Difference]: Finished difference Result 10549 states and 18119 transitions. [2020-10-28 10:26:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:26:38,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 790 [2020-10-28 10:26:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:38,579 INFO L225 Difference]: With dead ends: 10549 [2020-10-28 10:26:38,579 INFO L226 Difference]: Without dead ends: 7118 [2020-10-28 10:26:38,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:26:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2020-10-28 10:26:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 7023. [2020-10-28 10:26:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-10-28 10:26:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 11340 transitions. [2020-10-28 10:26:38,878 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 11340 transitions. Word has length 790 [2020-10-28 10:26:38,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:38,878 INFO L481 AbstractCegarLoop]: Abstraction has 7023 states and 11340 transitions. [2020-10-28 10:26:38,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 11340 transitions. [2020-10-28 10:26:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-28 10:26:38,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:38,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:26:38,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:26:38,903 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash -158011323, now seen corresponding path program 1 times [2020-10-28 10:26:38,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:38,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385215154] [2020-10-28 10:26:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:44,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:44,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-28 10:26:44,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:26:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 10:26:44,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:44,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:26:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:26:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:44,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:44,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:44,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:26:44,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:44,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:44,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:26:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:44,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:26:44,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:26:44,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:44,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:26:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:26:44,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385215154] [2020-10-28 10:26:44,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:26:44,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:26:44,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779131008] [2020-10-28 10:26:44,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:44,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:44,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:44,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:44,601 INFO L87 Difference]: Start difference. First operand 7023 states and 11340 transitions. Second operand 7 states. [2020-10-28 10:26:53,500 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:26:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:57,131 INFO L93 Difference]: Finished difference Result 21186 states and 35493 transitions. [2020-10-28 10:26:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:26:57,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 791 [2020-10-28 10:26:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:57,223 INFO L225 Difference]: With dead ends: 21186 [2020-10-28 10:26:57,223 INFO L226 Difference]: Without dead ends: 14169 [2020-10-28 10:26:57,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:26:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14169 states. [2020-10-28 10:26:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14169 to 14144. [2020-10-28 10:26:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14144 states. [2020-10-28 10:26:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14144 states to 14144 states and 22538 transitions. [2020-10-28 10:26:57,682 INFO L78 Accepts]: Start accepts. Automaton has 14144 states and 22538 transitions. Word has length 791 [2020-10-28 10:26:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:57,682 INFO L481 AbstractCegarLoop]: Abstraction has 14144 states and 22538 transitions. [2020-10-28 10:26:57,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 14144 states and 22538 transitions. [2020-10-28 10:26:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-28 10:26:57,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:57,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:26:57,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:26:57,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1856639007, now seen corresponding path program 1 times [2020-10-28 10:26:57,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:57,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959639651] [2020-10-28 10:26:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:02,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:02,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 811 [2020-10-28 10:27:02,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:27:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 10:27:02,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:02,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:27:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:27:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 10:27:02,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:03,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:03,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:03,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:03,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:27:03,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:03,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:27:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:03,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:03,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 10:27:03,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:27:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:03,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:27:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:27:03,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959639651] [2020-10-28 10:27:03,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:27:03,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:27:03,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945786930] [2020-10-28 10:27:03,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:27:03,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:03,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:27:03,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:27:03,430 INFO L87 Difference]: Start difference. First operand 14144 states and 22538 transitions. Second operand 7 states. [2020-10-28 10:27:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:15,591 INFO L93 Difference]: Finished difference Result 40777 states and 69013 transitions. [2020-10-28 10:27:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:27:15,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 793 [2020-10-28 10:27:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:15,738 INFO L225 Difference]: With dead ends: 40777 [2020-10-28 10:27:15,738 INFO L226 Difference]: Without dead ends: 26639 [2020-10-28 10:27:15,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:27:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26639 states. [2020-10-28 10:27:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26639 to 26391. [2020-10-28 10:27:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26391 states. [2020-10-28 10:27:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26391 states to 26391 states and 39717 transitions. [2020-10-28 10:27:16,688 INFO L78 Accepts]: Start accepts. Automaton has 26391 states and 39717 transitions. Word has length 793 [2020-10-28 10:27:16,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:27:16,689 INFO L481 AbstractCegarLoop]: Abstraction has 26391 states and 39717 transitions. [2020-10-28 10:27:16,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:27:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 26391 states and 39717 transitions. [2020-10-28 10:27:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-28 10:27:16,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:27:16,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:16,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:27:16,770 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:27:16,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:27:16,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1675596614, now seen corresponding path program 1 times [2020-10-28 10:27:16,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:27:16,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974721860] [2020-10-28 10:27:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:27:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:21,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:21,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-28 10:27:21,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:27:21,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 10:27:21,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:21,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:27:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:27:21,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:27:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:27:22,178 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:27:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:22,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:22,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:22,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:22,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:27:22,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:22,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:27:22,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:27:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:22,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:22,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:27:22,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 10:27:22,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:22,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:27:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:27:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:27:22,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974721860] [2020-10-28 10:27:22,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:27:22,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:27:22,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422839640] [2020-10-28 10:27:22,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:27:22,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:22,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:27:22,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:27:22,617 INFO L87 Difference]: Start difference. First operand 26391 states and 39717 transitions. Second operand 8 states. [2020-10-28 10:27:30,164 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:27:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:36,236 INFO L93 Difference]: Finished difference Result 66668 states and 104096 transitions. [2020-10-28 10:27:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:27:36,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 804 [2020-10-28 10:27:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:36,400 INFO L225 Difference]: With dead ends: 66668 [2020-10-28 10:27:36,400 INFO L226 Difference]: Without dead ends: 40283 [2020-10-28 10:27:36,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:27:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40283 states. [2020-10-28 10:27:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40283 to 40153. [2020-10-28 10:27:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40153 states. [2020-10-28 10:27:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40153 states to 40153 states and 55415 transitions. [2020-10-28 10:27:37,523 INFO L78 Accepts]: Start accepts. Automaton has 40153 states and 55415 transitions. Word has length 804 [2020-10-28 10:27:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:27:37,524 INFO L481 AbstractCegarLoop]: Abstraction has 40153 states and 55415 transitions. [2020-10-28 10:27:37,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:27:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 40153 states and 55415 transitions. [2020-10-28 10:27:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-28 10:27:37,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:27:37,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:27:37,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:27:37,613 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:27:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:27:37,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1170036375, now seen corresponding path program 1 times [2020-10-28 10:27:37,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:27:37,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58463740] [2020-10-28 10:27:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:27:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:42,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:27:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:27:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:42,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:42,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:42,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:27:42,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:42,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:42,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:43,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:27:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:27:43,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:43,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:27:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:43,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:27:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:43,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:43,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:27:43,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:27:43,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:43,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:27:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:27:43,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58463740] [2020-10-28 10:27:43,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:27:43,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:27:43,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979276793] [2020-10-28 10:27:43,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:27:43,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:43,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:27:43,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:27:43,395 INFO L87 Difference]: Start difference. First operand 40153 states and 55415 transitions. Second operand 7 states. [2020-10-28 10:27:43,659 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:27:46,948 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:27:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:58,368 INFO L93 Difference]: Finished difference Result 90753 states and 130749 transitions. [2020-10-28 10:27:58,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:27:58,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-28 10:27:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:58,578 INFO L225 Difference]: With dead ends: 90753 [2020-10-28 10:27:58,578 INFO L226 Difference]: Without dead ends: 50606 [2020-10-28 10:27:58,635 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 10:27:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50606 states. [2020-10-28 10:27:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50606 to 50340. [2020-10-28 10:27:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50340 states. [2020-10-28 10:28:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50340 states to 50340 states and 67842 transitions. [2020-10-28 10:28:00,030 INFO L78 Accepts]: Start accepts. Automaton has 50340 states and 67842 transitions. Word has length 807 [2020-10-28 10:28:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:00,031 INFO L481 AbstractCegarLoop]: Abstraction has 50340 states and 67842 transitions. [2020-10-28 10:28:00,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:28:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 50340 states and 67842 transitions. [2020-10-28 10:28:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-28 10:28:00,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:00,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:00,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:28:00,110 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:00,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1041488644, now seen corresponding path program 1 times [2020-10-28 10:28:00,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:00,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164477867] [2020-10-28 10:28:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:01,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:05,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:05,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-28 10:28:05,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:28:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 10:28:05,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:05,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:05,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:05,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:28:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:28:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:05,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:28:05,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:05,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:28:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:05,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:28:05,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:28:05,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:05,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:28:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:28:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:05,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:05,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:28:05,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:28:05,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:05,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:28:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:28:05,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164477867] [2020-10-28 10:28:05,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:28:05,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:28:05,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499192270] [2020-10-28 10:28:05,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:28:05,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:05,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:28:05,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:28:05,960 INFO L87 Difference]: Start difference. First operand 50340 states and 67842 transitions. Second operand 7 states. [2020-10-28 10:28:06,088 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:28:08,893 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:28:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:28:19,768 INFO L93 Difference]: Finished difference Result 120221 states and 164907 transitions. [2020-10-28 10:28:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:28:19,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 814 [2020-10-28 10:28:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:28:20,054 INFO L225 Difference]: With dead ends: 120221 [2020-10-28 10:28:20,054 INFO L226 Difference]: Without dead ends: 69887 [2020-10-28 10:28:20,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:28:20,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69887 states. [2020-10-28 10:28:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69887 to 69834. [2020-10-28 10:28:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69834 states. [2020-10-28 10:28:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69834 states to 69834 states and 92354 transitions. [2020-10-28 10:28:21,728 INFO L78 Accepts]: Start accepts. Automaton has 69834 states and 92354 transitions. Word has length 814 [2020-10-28 10:28:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:21,728 INFO L481 AbstractCegarLoop]: Abstraction has 69834 states and 92354 transitions. [2020-10-28 10:28:21,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:28:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 69834 states and 92354 transitions. [2020-10-28 10:28:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2020-10-28 10:28:21,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:21,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:28:21,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:28:21,819 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:21,819 INFO L82 PathProgramCache]: Analyzing trace with hash -348847096, now seen corresponding path program 1 times [2020-10-28 10:28:21,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:21,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594162293] [2020-10-28 10:28:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:24,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-28 10:28:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2908 [2020-10-28 10:28:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:24,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 10:28:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:28:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 784 [2020-10-28 10:28:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:25,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:25,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:28:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:25,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:25,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:25,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:28:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:28:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:25,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:25,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:28:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:25,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:25,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:28:25,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:28:25,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:25,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:28:25,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:28:25,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594162293] [2020-10-28 10:28:25,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:28:25,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:28:25,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149292371] [2020-10-28 10:28:25,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:28:25,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:25,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:28:25,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:28:25,903 INFO L87 Difference]: Start difference. First operand 69834 states and 92354 transitions. Second operand 6 states. [2020-10-28 10:28:26,243 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:28:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:28:38,950 INFO L93 Difference]: Finished difference Result 138828 states and 184162 transitions. [2020-10-28 10:28:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:28:38,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 816 [2020-10-28 10:28:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:28:39,171 INFO L225 Difference]: With dead ends: 138828 [2020-10-28 10:28:39,171 INFO L226 Difference]: Without dead ends: 69834 [2020-10-28 10:28:39,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:28:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69834 states. [2020-10-28 10:28:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69834 to 69834. [2020-10-28 10:28:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69834 states. [2020-10-28 10:28:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69834 states to 69834 states and 86893 transitions. [2020-10-28 10:28:41,110 INFO L78 Accepts]: Start accepts. Automaton has 69834 states and 86893 transitions. Word has length 816 [2020-10-28 10:28:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:41,111 INFO L481 AbstractCegarLoop]: Abstraction has 69834 states and 86893 transitions. [2020-10-28 10:28:41,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:28:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 69834 states and 86893 transitions. [2020-10-28 10:28:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2020-10-28 10:28:41,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:41,234 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:28:41,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:28:41,235 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:41,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1385307145, now seen corresponding path program 1 times [2020-10-28 10:28:41,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:41,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897297702] [2020-10-28 10:28:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:44,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:46,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-28 10:28:46,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:46,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:46,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:46,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:28:46,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:46,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:46,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:28:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:46,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:46,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:28:46,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:28:46,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:46,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:28:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:46,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:46,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:28:46,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:46,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:28:46,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:46,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:28:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:28:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:47,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 10:28:47,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:28:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 10:28:47,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:47,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 10:28:47,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 10:28:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:47,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:47,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:28:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 10:28:47,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:47,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:28:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:47,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-28 10:28:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:47,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:28:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 10:28:47,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:47,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:28:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 313 proven. 69 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 10:28:47,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897297702] [2020-10-28 10:28:47,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:28:47,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:28:47,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177806756] [2020-10-28 10:28:47,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:28:47,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:47,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:28:47,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:28:47,850 INFO L87 Difference]: Start difference. First operand 69834 states and 86893 transitions. Second operand 7 states. [2020-10-28 10:28:47,980 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:28:53,720 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:29:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:29:02,435 INFO L93 Difference]: Finished difference Result 177590 states and 225493 transitions. [2020-10-28 10:29:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:29:02,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1029 [2020-10-28 10:29:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:29:02,782 INFO L225 Difference]: With dead ends: 177590 [2020-10-28 10:29:02,782 INFO L226 Difference]: Without dead ends: 108596 [2020-10-28 10:29:02,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:29:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108596 states. [2020-10-28 10:29:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108596 to 95061. [2020-10-28 10:29:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95061 states. [2020-10-28 10:29:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95061 states to 95061 states and 114529 transitions. [2020-10-28 10:29:05,330 INFO L78 Accepts]: Start accepts. Automaton has 95061 states and 114529 transitions. Word has length 1029 [2020-10-28 10:29:05,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:29:05,331 INFO L481 AbstractCegarLoop]: Abstraction has 95061 states and 114529 transitions. [2020-10-28 10:29:05,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:29:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 95061 states and 114529 transitions. [2020-10-28 10:29:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2020-10-28 10:29:05,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:29:05,413 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:29:05,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:29:05,413 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:29:05,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:29:05,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1410684645, now seen corresponding path program 1 times [2020-10-28 10:29:05,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:29:05,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662036987] [2020-10-28 10:29:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:29:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking...